Re: How to Add ANSI Color to User Response
Pierre Fortin wrote: Over the years, I've tried different mechanisms for applying colors until I got my hands on f-stings; then I created a tiny module with all the colors (cR, cG, etc) which made my life so much simpler (attached). Attachments are stripped off in this list. It would be nice to see this tiny module of yours. An URL or attach as inline text please. -- https://mail.python.org/mailman/listinfo/python-list
Re: Assistance Request - Issue with Installing 'pip' despite Python 3.10 Installation
Dennis Lee Bieber wrote: Windows PowerShell Copyright (C) Microsoft Corporation. All rights reserved. Try the new cross-platform PowerShell https://aka.ms/pscore6 PS C:\Users\Owner> Get-ChildItem -Path C:\Python310\ -Recurse -Name -Filter "pip.*" Tried it. Oh man what a slow process: sync & timer & pwsh -Command Get-ChildItem -Path F:\gv\Python310\ -Recurse -Name -Filter "pip.*" & timer (15 results stripped). Completed in 12.44 sec! As opposed to my own Envtool: sync & timer & envtool.exe --evry pip.* | grep "Python310" & timer (15 results stripped) Completed in 0.57 sec! But I have 5 GByte of stuff under 'f:\gv\Python310\' Envtool is at https://github.com/gvanem/Envtool Works best together with the amazing EveryThing search engine by David Carpenter at https://www.voidtools.com -- --gv -- https://mail.python.org/mailman/listinfo/python-list
Re: Q: argparse.add_argument()
Thomas Passin wrote: So please, try to think out how your questions will seem to the reader, and be clear about what you are asking. You may not know the terminology that some other people use, but don't let that stop you from being clear about what you really need to find out. Including more context is likely to be helpful, too. Don't leave it to the readers to infer what you were thinking of. I'll do that. My post was written in a bit of a hurry and frustration after struggling with my 'typo' for 30 minutes. -- --gv -- https://mail.python.org/mailman/listinfo/python-list
Re: Q: argparse.add_argument()
Thomas Passin wrote:
Are you trying to troll here?
You just showed how you got an error with this construction, so why are you
asking how to
get an error with this construction?
I meant (obviously), another error-message besides:
error: unrecognized arguments: -cn
Perhaps from 'parser.add_argument ("-c, --clean", dest="clean",
action="store_true")'
error: "-c, --clean", 2 options are unsupported.
BTW, accusing someone of 'trolling' is rather rude IMHO.
And thanks to ChrisA for a nice and normal answer.
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Q: argparse.add_argument()
I accidentally used 'argparse' like this in my Python 3.9 program:
parser.add_argument ("-c, --clean", dest="clean", action="store_true")
parser.add_argument ("-n, --dryrun", dest="dryrun", action="store_true")
instead of:
parser.add_argument ("-c", "--clean", dest="clean", action="store_true")
parser.add_argument ("-n", "--dryrun", dest="dryrun", action="store_true")
So any use of 'my-prog.py -cn' threw an error:
error: unrecognized arguments: -cn
So is there something that throws an error on this wrong use of
"-c, --clean" instead? Could be useful. Or is "-c, --clean" legit somehow?
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Re: pip issue
Dieter Maurer wrote: Otherwise no issues. But where is this text "-arkupsafe" stored and how to get rid it it? I've searched through all of my .pth files and found no such string. Have you looked at the content of the folder mentioned in the warnings (e.g. `...\site-packages`). I had 2 folders named: site-packages\~arkupsafe\ site-packages\~arkupsafe-2.1.1.dist-info\ Removing those, the problem was gone. So perhaps this tilde '~' means something special for pip? -- --gv -- https://mail.python.org/mailman/listinfo/python-list
pip issue
Hello list. I have an issue with 'pip v. 22.3.1'. On any 'pip install' command I get warning like this: c:\> pip3 install asciinema WARNING: Ignoring invalid distribution -arkupsafe (f:\gv\python310\lib\site-packages) WARNING: Ignoring invalid distribution -arkupsafe (f:\gv\python310\lib\site-packages) Collecting asciinema Downloading asciinema-2.2.0-py3-none-any.whl (92 kB) ... Otherwise no issues. But where is this text "-arkupsafe" stored and how to get rid it it? I've searched through all of my .pth files and found no such string. I assume this is an entry for an orphaned package "MarkupSafe" since a 'pip list | grep markup' will list 'MarkupSafe 2.1.1'. -- --gv -- https://mail.python.org/mailman/listinfo/python-list
Re: Changing 'Scripts/*.exe'
dn wrote: E.g. 'Scripts/pip2.exe' has the path "f:\programfiler\python27\python.exe" hard-coded inside it. Is there a easy way to fix this w/o re-installing this old Python? Yes, by putting a symbolic-link at the old 'programfiler' location which points to the new 'gv' installation. I'm suspicious about sym-links. Instead for 'pip' I just did a 'py -2 get-ip.py' which seems to have fixed it. The newly generated 'f:\gv\Python27\Scripts\pip2.exe' seems to work fine; the list from 'pip2.7.exe list' is correct. -- --gv -- https://mail.python.org/mailman/listinfo/python-list
Changing 'Scripts/*.exe'
Hello list. I'm moved my old Python27 installation from f:\ProgramFiler\Python27 ( == 'ProgramFiles') to f:\gv\Python27 and now many 'scripts/*.exe' program fails to start since the old path to 'Python.exe' is wrong. E.g. 'Scripts/pip2.exe' has the path "f:\programfiler\python27\python.exe" hard-coded inside it. Is there a easy way to fix this w/o re-installing this old Python? -- --gv -- https://mail.python.org/mailman/listinfo/python-list
Re: Persistent Error: Python was not found
Eryk Sun wrote: If the redirector app is run without arguments, it will open the Microsoft Store to install the latest version of the Python store app distribution. Currently that means Python 3.10. That is true with cmd. But with a shell like 4NT, I get: c:\> "%LocalAppData%\Microsoft\WindowsApps\python.exe" 4NT: (Sys) No access to the file. "C:\Users\gvane\AppData\Local\Microsoft\WindowsApps\python.exe" No matter what I do with this "App Alias" setting. What a broken and confusing design this AppX design is. -- --gv -- https://mail.python.org/mailman/listinfo/python-list
Re: How to have python 2 and 3 both on windows?
Barry wrote: Tip “py.exe -0” will list the state of installed pythons. Not here; 'py.exe -0' gives: Requested Python version (0) not installed Which PyInstaller version support this '-0' option? -- --gv -- https://mail.python.org/mailman/listinfo/python-list
Re: URLError:
Shaozhong SHI wrote: The following is used in a loop to get response code for each url. print (urllib.request.urlopen(url).getcode()) However, error message says: URLError: 11001 == WSAHOST_NOT_FOUND. Look in any 'winsock.h' header: #define WSAHOST_NOT_FOUND (WSABASEERR+1001) -- --gv -- https://mail.python.org/mailman/listinfo/python-list
Re: Best way to check if there is internet?
Abdur-Rahmaan Janhangeer wrote:
It's a demo to get the idea behind, uses requests and the rich library.
I'd never heard of 'Rich'. But d/l it and playing
with it, I came up with this version with fat green
spinner-bar:
import requests
from rich.console import Console
def ensure_internet():
console = Console()
domains = [ "https://google.com";,
"https://yahoo.com";,
"https://bing.com";,
"https://www.ecosia.org";,
"https://www.wikipedia.org"; ]
results = []
with console.status ("Checking internet ...", spinner="material") as c:
for domain in domains:
c._spinner.text = "Checking %-40s" % domain
try:
requests.get(domain)
results.append(1)
except Exception as e:
results.append(0)
if not any(results):
print("No internet connection")
ensure_internet()
---
Rich' is IMO a pretty amazing package.
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Re: Best way to check if there is internet?
Abdur-Rahmaan Janhangeer wrote:
Thanks everybody for the answers. It was very enlightening. Here's my
solution:
# using rich console
def ensure_internet():
console = Console()
domains = [
'https://google.com',
'https://yahoo.com',
'https://bing.com',
'https://www.ecosia.org',
'https://www.wikipedia.org'
]
results = []
with console.status("Checking internet ...", spinner="dots"):
for domain in domains:
try:
requests.get(domain)
results.append(1)
except Exception as e:
results.append(0)
if not any(results):
print('No internet connection')
sys.exit()
Was this supposed to be a self-contained working
program? It doesn't work here.
Were/what is 'Console()' for example?
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Re: Unable to compile my C Extension on Windows: unresolved external link errors
Marco Sulla wrote: Error LNK2001: unresolved external symbol PyErr_SetObject and so on. I post the part of my setup.py about the C Extension: extra_compile_args = ["-DPY_SSIZE_T_CLEAN", "-DPy_BUILD_CORE"] Shouldn't this be "-DPy_BUILD_CORE_MODULE"? -- --gv -- https://mail.python.org/mailman/listinfo/python-list
Re: Create a real-time interactive TUI using Python.
hongy...@gmail.com wrote: The following are some python TUI framework libraries/projects I have discovered so far: https://github.com/pfalcon/picotui https://github.com/peterbrittain/asciimatics https://github.com/bczsalba/pytermgui https://github.com/GeorgeFilipkin/pulsemixer https://github.com/jwlodek/py_cui https://github.com/saulpw/visidata https://github.com/willmcgugan/textual https://github.com/urwid/urwid Tried some of these. But only Asciimatics and Py_CUI works on Windows. -- --gv -- https://mail.python.org/mailman/listinfo/python-list
Re: "py.ini" question
Ralf M. wrote: I think the problem / misunderstanding is that Gisle put in py.ini only [defaults] python=3.6 and expected this to make py -3 start 3.6. However py -3 looks for a key named 'python3' and, not finding it, uses default behaviour (ignoring the 'python' key), i.e. starts the most modern stable 3.x. The py.ini documentation is a bit hard to find in the help file and hard to understand I totally agree with that. I tried the (rather insane) py.ini [defaults] python=3.7 python2=3.8 python4=2.7 and it works as documented (py -3 shows default behaviour as there is no 'python3' in py.ini): C:\>py Python 3.7.4 (tags/v3.7.4:e09359112e, Jul 8 2019, 20:34:20) [MSC v.1916 64 bit(AMD64)] on win32 C:\>py -2 Python 3.8.5 (tags/v3.8.5:580fbb0, Jul 20 2020, 15:57:54) [MSC v.1924 64 bit (AMD64)] on win32 C:\>py -3 Python 3.8.5 (tags/v3.8.5:580fbb0, Jul 20 2020, 15:57:54) [MSC v.1924 64 bit (AMD64)] on win32 C:\>py -4 Python 2.7.18 (v2.7.18:8d21aa21f2, Apr 20 2020, 13:19:08) [MSC v.1500 32 bit (Intel)] on win32 Thank for confirming what I suspected. And as I wrote earlier: Since I'm on a 64-bit Python, a 'py -3' totally seems to ignore 'py.ini', unless it says: [defaults] python3=3.6 python3=3.6-32 --- Except, I meant "Since I'm on a 64-bit Windows" and not "Since I'm on a 64-bit Python". -- https://mail.python.org/mailman/listinfo/python-list
Re: "py.ini" question
Barry Scott wrote: A copy of this is also in 'c:\Windows\py.ini'. So when I do a: py -3 -c "import sys; print(sys.version)" I would assume a "3.6..." would be printed. But no, py.exe chooses to run my newest Python 3.8: 3.8.9 (default, Apr 13 2021, 15:54:59) [GCC 10.2.0 64 bit (AMD64)] Only when I do 'py -3.6 -c ...', I get what I'd expect. So is a 'py.ini' and the '[defaults]' simply ignored or is my syntax wrong? On windows 10 your personal py.ini is in %localappdata%\py.ini do you have one? Yes, that's my 'c:\Users\Gisle\AppData\Local\py.ini' in my case. C:\Users\barry>py -0 Installed Pythons found by py Launcher for Windows -3.10-64 -3.10-32 -3.9-64 * -3.9-32 -3.8-64 -3.8-32 -3.7-64 -3.7-32 -3.6-64 -3.6-32 -3.5-64 -3.5-32 -3.4-64 -3.4-32 -2.7-64 -2.7-32 On that, I'm getting: Requested Python version (0) not installed Is that '-0' some 3.9+ feature? C:\Users\barry>py Python 3.9.4 (tags/v3.9.4:1f2e308, Apr 6 2021, 13:40:21) [MSC v.1928 64 bit (AMD64)] on win32 Type "help", "copyright", "credits" or "license" for more information. With a 'py', I get: Python 3.6.5 (v3.6.5:f59c0932b4, Mar 28 2018, 16:07:46) [MSC v.1900 32 bit (Intel)] on win32 With 'py -3.6' or 'py 3.8' I get the expected. But with 'py -3': Python 3.8.9 (default, Apr 13 2021, 15:54:59) [GCC 10.2.0 64 bit (AMD64)] on win32 Since I'm on a 64-bit Python, a 'py -3' totally seems to ignore 'py.ini', unless it says: [defaults] python3=3.6 python3=3.6-32 Strange as always. And yes, Mats Wichmann, I've tried a 'set PYLAUNCH_DEBUG=1'. No help. -- --gv -- https://mail.python.org/mailman/listinfo/python-list
"py.ini" question
I have a question about the Python launcher; c:\Windows\py.exe and the py.ini file. I have both Python 3.6 (32-bit) and Python 3.8 (64-bit) installed. And I have a 'c:\Users\Gisle\AppData\Local\py.ini' with this only: [defaults] python=3.6 A copy of this is also in 'c:\Windows\py.ini'. So when I do a: py -3 -c "import sys; print(sys.version)" I would assume a "3.6..." would be printed. But no, py.exe chooses to run my newest Python 3.8: 3.8.9 (default, Apr 13 2021, 15:54:59) [GCC 10.2.0 64 bit (AMD64)] Only when I do 'py -3.6 -c ...', I get what I'd expect. So is a 'py.ini' and the '[defaults]' simply ignored or is my syntax wrong? -- --gv -- https://mail.python.org/mailman/listinfo/python-list
Re: Current thinking on required options
Loris Bennett wrote:
usage: grocli [-h] [-o {check,add,delete}] [-u USERS [USERS ...]] [-g GROUP]
Command line grouper tool
optional arguments:
-h, --helpshow this help message and exit
-o {check,add,delete}, --operation {check,add,delete}
operation to apply
-u USERS [USERS ...], --users USERS [USERS ...]
users to apply operation to
-g GROUP, --group GROUP
group to apply operation to
However, the options -o, -u, and -g are required, not optional.
Just a nitpick.
To quote from https://en.wikipedia.org/wiki/Usage_message
"To indicate required arguments, Angled brackets are
commonly used, ..."
So then it should better be written as:
grocli [-h] <-o {check,add,delete}> <-u USERS [USERS ...]> <-g GROUP>
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Re: port to PDOS (especially mainframe)
Edwards wrote: I don't wish to run configure, I want to hand-construct the makefile. PDOS is a very simple system, so I only want to produce a single executable, no DLLs etc. I don't need extensions to work or anything, all I need to be able to do is run asma. Why not try to port MicroPython instead? Much lighter. I've ported it to MSDOS/djgpp with some success. However I'm currently stuck on this unresolved external: python.a(abstract.o)(.text+0x668c):abstract.c: undefined reference to `PyExc_StopIteration' It's in 'Objects/exceptions.c'. When in doubt, look at the 'python*.map' files. I assume you have managed to build Python 3 on Windows (?). And BTW, it's also forwarded from 'python3.dll' via some hacks in 'python3dll.c' to the real Python in 'Python310.dll' (in my case): pedump python3.dll | grep PyExc_StopIteration 853A 227 PyExc_StopIteration (forwarder -> python310.dll.PyExc_StopIteration) plus a lot more; it's quite ugly. -- --gv -- https://mail.python.org/mailman/listinfo/python-list
Re: Python Error
Barry Scott wrote: If you have python from python.org installed you should be able to list all the version you have installed with the command: py -0 When was that '-0' feature added? I have Python 3.6 from Python.org and here a 'py.exe -0' gives: Requested Python version (0) not installed But using 'py.exe -0' from Python 3.9 correctly gives: -3.6-32 * -2.7-32 -- --gv -- https://mail.python.org/mailman/listinfo/python-list
Re: The speed of glob()
Chris Angelico wrote: BTW, I just noticed something. The path you're using for testing purposes is "e:/net". Is that network-attached or local? If it's a remote mount of some sort, then that will make a HUGE difference No. Did the word 'net' make you think that :-) It's a local FAT32 partition where I keep old 'net' related projects. Whether it's NTFS or FAT32 should hopefully not matter for relative speed-compares. -- --gv -- https://mail.python.org/mailman/listinfo/python-list
Re: The speed of glob()
Chris Angelico wrote: Has anybody noticed the speed of 'glob()' has decreased somewhere between v3.6 and v3.10. I got these results: Python 3.6.5: 1st run: 0.14694 2nd run: 0.09506 <- *always* the fastest Python 3.7.7:<- from Nuget 1st run: 0.12440 2nd run: 0.09602 Python 3.10.0: <- from Git repo 1st run: 0.15922 2nd run: 0.12424 'glob()' in Python 3.6.5 is consistently 30% faster on the 2nd run compared to 3.10.0. Unfortunately that's very hard to compare. If you're building Python from source, the parameters may be VERY different from a prepackaged binary. I guess so w/o knowing why. I just tried this from MS' AppStore: Python 3.8.5: 1st run: 0.12121 2nd run: 0.07674 Fastest I've tried so far. Are you able to redo this test with more consistent Python builds? For instance, you can go as far as 3.8 using python.org binaries, or alternatively, build all your tests from git (by checking out different branches). I do not want to put to much stress on this. Maybe I'm just 'ass-u-me'ing too much? The important thing is that any Python3.x is much faster on both the 1st and 2nd run compared to my Python 2.7. -- --gv -- https://mail.python.org/mailman/listinfo/python-list
The speed of glob()
Has anybody noticed the speed of 'glob()' has
decreased somewhere between v3.6 and v3.10.
With this little test:
import os, sys, timeit, glob
# change to suite
globPath = u'e:/net/*/*/*/*'
def _glob():
glob.glob (globPath)
# I used this 'https://docs.microsoft.com/en-gb/sysinternals/downloads/sync'
def flush_disks():
sync = r"f:\ProgramFiler\Sysinternals\sync.exe -nobanner"
print ("Exec sync: %s" % sync)
os.system (sync)
flush_disks()
print ("Python %d.%d.%d:" % sys.version_info[:3])
print (" 1st run: %.5f" % timeit.timeit (_glob, number=1))
print (" 2nd run: %.5f" % timeit.timeit (_glob, number=1))
I got these results:
Python 3.6.5:
1st run: 0.14694
2nd run: 0.09506 <- *always* the fastest
Python 3.7.7:<- from Nuget
1st run: 0.12440
2nd run: 0.09602
Python 3.10.0: <- from Git repo
1st run: 0.15922
2nd run: 0.12424
'glob()' in Python 3.6.5 is consistently 30% faster on
the 2nd run compared to 3.10.0.
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Re: How to create an Excel app that runs Python?
Grant Edwards wrote: On 2020-03-24, oliver wrote: Use the win32com library to interact with Excel via COM. Huh? I thought that the users have no way of running a local Python app. Maybe creating a self-contained .exe using PyInstaller? For me, this: pyinstaller.exe --noconfirm --console --onefile file.py creates a 'dist/file.exe' that depend on nothing but system libraries. But it's 5 MByte though. -- --gv -- https://mail.python.org/mailman/listinfo/python-list
Re: Python 3.6 on Windows - does a python3 alias get created by installation?
Eryk Sun wrote: The simplest way to create a shell link is via the Windows GUI shell, Explorer. To inherit the working directory of the parent process, leave the link's "start in" field empty. Also, add ".LNK" to the system PATHEXT environment variable to allow finding link files without having to include the ".lnk" file extension, i.e. to be able to run "python3.lnk <...>" as just "python3 <...>". An "alias" could also simply be created using: doskey python3=f:\ProgramFiles\Python36\python.exe -- --gv -- https://mail.python.org/mailman/listinfo/python-list
Re: Announcing colour-text and colour-print
Barry Scott wrote: Here is an example: from colour_text import ColourText ct = ColourText() ct.initTerminal() print( ct( "The next section is in green: <>green example<>." ) ) Looking at the sources, it seems 'win32' should be supported. But no; with the above example: c:\>py -3 example.py The next section is in green: ←[32mexample←[m. No colours, just the pesky SGI-codes. BTW. it fails completely in Python 2.7. -- --gv -- https://mail.python.org/mailman/listinfo/python-list
Re: PIP question
dieter wrote: directory with some possible leftovers. It there a connection between this mysterious '-ip' package and this directory? This is possible. A so called "distribution" can install packages of a different name (for example, the distribution "Zope" installs (among others) a package "ZPublisher"). In addition, the actual installation typically has lost metadata information (e.g. the version number). Therefore, "pip" may use "*.dist-info" or "*.egg-info" directories to provide this metadata. Look into those directories to find out which packages are installed for the corresponding distribution. You can then check whether those packages are truely available (and if not delete the *-info* directory). Thanks for this info. After deleting the f:\programfiler\python36\lib\site-packages\~ip-19.1.1.dist-info directory and running my script again, the "-ip" is gone. All this *.dist-info stuff is alien stuff to me, but I guess 'pip install --upgrade' uses these? BTW, there is no command 'pip uninstall --orphans'. Any other tool that does the same? -- --gv -- https://mail.python.org/mailman/listinfo/python-list
PIP question
Hello list.
This little program should print the location of all
my installed Python packages:
-- 8< -- 8< ---
import pip
try:
packages = pip.get_installed_distributions (local_only=False, skip=())
except AttributeError:
import pkg_resources # Python3
packages = pkg_resources.working_set
package_list = []
for p in sorted (packages):
print ("%-20s -> %s" % (p.key, p.location))
-- 8< -- 8< ---
But for my Python 3.6 installation, it claims I have
an '-ip' package:
-ip-> f:\programfiler\python36\lib\site-packages
I fail to find one, but I do have a:
f:\programfiler\python36\lib\site-packages\~ip-19.1.1.dist-info
directory with some possible leftovers. It there a connection
between this mysterious '-ip' package and this directory?
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Passing back the ERRORLEVEL
I have trouble understanding why a 'sys.exit(2)' is
*not* passed back to the CMD shell in this little example:
- c:\py_cmd_test.cmd --
@%WinDir%\py.exe -2 -x %~dp0py_cmd_test.cmd & exit /b %ERRORLEVEL%
# The '-x' is for Python to skip the 1st line of this file.
import sys
print ("Hello, I am %s; %s" % (sys.argv[0], sys.version_info))
sys.exit (2)
Executing this in a 4NT shell (from JPsoft), correctly reports:
c:\> py_cmd_test.cmd & echo %errorlevel
Hello, I am C:\py_cmd_test.cmd; sys.version_info(major=2, minor=7, micro=15,
releaselevel='final', serial=0)
2
But the junk-ware cmd.exe does not:
C:\>py_cmd_test.cmd & echo %ERRORLEVEL%
Hello, I am C:\py_cmd_test.cmd; sys.version_info(major=2, minor=7, micro=15,
releaselevel='final', serial=0)
0
Anybody here who can spot the problem?
Same issue with 'py -3'. I'm on Windows-10.
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Re: Argh!! Can't wrap my head around this Python stuff!
Greg Tibbet wrote: > ellipse() uses the method self.draw.draw_ellipse() Okay, fine... > but WHERE is draw_ellipse defined?? What magic is happening there? > I've searched the entire PIL directory tree, and the ONLY two places > draw_ellipse is mentioned are right there in the ellipse() function... > WHAT am I missing?? The C sources. Not all of PIL is ritten in Python. draw_ellipse() is a thin wrapper for ImagingDrawEllips(). See PIL/_imaging.c: https://github.com/python-pillow/Pillow/_imaging.c Which again is in libimage/Draw.c: https://github.com/python-pillow/Pillow/blob/13d84993717cffd64a2e1d7e3e6edb1 85973d559/libImaging/Draw.c calling ellipse(). -- --gv -- https://mail.python.org/mailman/listinfo/python-list
Re: Argh!! Can't wrap my head around this Python stuff!
Greg Tibbet wrote: > ellipse() uses the method self.draw.draw_ellipse() Okay, fine... > but WHERE is draw_ellipse defined?? What magic is happening there? > I've searched the entire PIL directory tree, and the ONLY two places > draw_ellipse is mentioned are right there in the ellipse() function... > WHAT am I missing?? The C sources. Not all of PIL is ritten in Python. draw_ellipse() is a thin wrapper for ImagingDrawEllips(). See PIL/_imaging.c: https://github.com/python-pillow/Pillow/_imaging.c Which again is in libimage/Draw.c: https://github.com/python-pillow/Pillow/blob/13d84993717cffd64a2e1d7e3e6edb1 85973d559/libImaging/Draw.c calling ellipse(). -- --gv -- https://mail.python.org/mailman/listinfo/python-list
Re: Argh!! Can't wrap my head around this Python stuff!
Greg Tibbet wrote: ellipse() uses the method self.draw.draw_ellipse() Okay, fine... but WHERE is draw_ellipse defined?? What magic is happening there? I've searched the entire PIL directory tree, and the ONLY two places draw_ellipse is mentioned are right there in the ellipse() function... WHAT am I missing?? The C sources. Not all of PIL is ritten in Python. draw_ellipse() is a thin wrapper for ImagingDrawEllips(). See PIL/_imaging.c: https://github.com/python-pillow/Pillow/_imaging.c Which again is in libimage/Draw.c: https://github.com/python-pillow/Pillow/blob/13d84993717cffd64a2e1d7e3e6edb185973d559/libImaging/Draw.c calling ellipse(). -- --gv -- https://mail.python.org/mailman/listinfo/python-list
Re: Easiest way to access C module in Python
bartc wrote: From inside python 2.7: Python 2.7.13rc1 (v2.7.13rc1:4d6fd49eeb14, Dec 3 2016, 21:49:42) [MSC v.1500 32 bit (Intel)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> import life >>> dir(life) ['__builtins__', '__doc__', '__file__', '__name__', '__package__', '__test__'] >>> works fine. Not really, as it's missing the attribute 'life' which is needed for the second part of 'life.life': Not sure what happend there. All is working now. But as you stated, Cython is truly a "beast". But as I wrote to Lele privately, the main reason for the failure, was Cygwin's Python2.7 messing up. I invoked the build from a GNU-Makefile. Thus Cygwin's Python was picked up from /bin/bash instead of my regular Python on PATH. A real PITA. -- --gv -- https://mail.python.org/mailman/listinfo/python-list
Re: Easiest way to access C module in Python
Lele Gaifax wrote:
On my PC, I get the following, using the "-v" option to verbosely see the
imported modules:
$ $ python -v
# installing zipimport hook
import zipimport # builtin
# installed zipimport hook
...
import life
dlopen("./life.so", 2);
import life # dynamically loaded from life.so
dir(life)
['__builtins__', '__doc__', '__file__', '__name__', '__package__', '__test__',
'life']
Can you try to import the "life" module and print its "dir()" to see the
symbols it exposes?
From inside python 2.7:
Python 2.7.13rc1 (v2.7.13rc1:4d6fd49eeb14, Dec 3 2016, 21:49:42) [MSC v.1500
32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import life
>>> dir(life)
['__builtins__', '__doc__', '__file__', '__name__', '__package__', '__test__']
>>>
works fine. But as I wrote, doing a:
python -vc "import life; print(life.life())"
from the cmd-line doesn't work:
...
import life # dynamically loaded from life.pyd
Traceback (most recent call last):
File "", line 1, in
AttributeError: 'module' object has no attribute 'life'
...
Inspection life.pyd shows no problems. It do export a "initlife"
function.
--
--gv
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Re: Easiest way to access C module in Python
Lele Gaifax wrote: $ python setup.py build_ext --inplace Compiling life.pyx because it changed. [1/1] Cythonizing life.pyx running build_ext building 'life' extension creating build creating build/temp.linux-x86_64-3.6 x86_64-linux-gnu-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -g -fdebug-prefix-map=/build/python3.6-5reRaQ/python3.6-3.6.3=. -specs=/usr/share/dpkg/no-pie-compile.specs -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -I/tmp/ct/include -I/usr/include/python3.6m -c life.c -o build/temp.linux-x86_64-3.6/life.o x86_64-linux-gnu-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -g -fdebug-prefix-map=/build/python3.6-5reRaQ/python3.6-3.6.3=. -specs=/usr/share/dpkg/no-pie-compile.specs -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -I/tmp/ct/include -I/usr/include/python3.6m -c fred.c -o build/temp.linux-x86_64-3.6/fred.o x86_64-linux-gnu-gcc -pthread -shared -Wl,-O1 -Wl,-Bsymbolic-functions -specs=/usr/share/dpkg/no-pie-link.specs -Wl,-z,relro -specs=/usr/share/dpkg/no-pie-link.specs -Wl,-z,relro -g -fdebug-prefix-map=/build/python3.6-5reRaQ/python3.6-3.6.3=. -specs=/usr/share/dpkg/no-pie-compile.specs -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 build/temp.linux-x86_64-3.6/life.o build/temp.linux-x86_64-3.6/fred.o -o /tmp/ct/life.cpython-36m-x86_64-linux-gnu.so $ python -c "import life; print(life.life())" 42 I tried your example on Python 2.7 (Win-10 / MSVC), but failed: python.exe setup.py build_ext --inplace running build_ext building 'life' extension creating build creating build\temp.win32-2.7 creating build\temp.win32-2.7\Release f:\gv\VC_2017\VC\Tools\MSVC\14.11.25503\bin\HostX86\x86\cl.exe /c /nologo /Ox /MD /W3 /GS- /DNDEBUG -If:\ProgramFiler\Python27\include -If:\ProgramFiler\Python27\PC /Tclife.c /Fobuild\temp.win32-2.7\Release\life.obj life.c f:\gv\VC_2017\VC\Tools\MSVC\14.11.25503\bin\HostX86\x86\cl.exe /c /nologo /Ox /MD /W3 /GS- /DNDEBUG -If:\ProgramFiler\Python27\include -If:\ProgramFiler\Python27\PC /Tcfred.c /Fobuild\temp.win32-2.7\Release\fred.obj fred.c f:\gv\VC_2017\VC\Tools\MSVC\14.11.25503\bin\HostX86\x86\link.exe /DLL /nologo /INCREMENTAL:NO /LIBPATH:f:\ProgramFiler\Python27\libs /LIBPATH:f:\ProgramFiler\Python27\PCbuild /EXPORT:initlife build\temp.win32-2.7\Release\life.obj build\temp.win32-2.7\Release\fred.obj /OUT:F:\ProgramFiler\Python27\test\Cython-test2\life.pyd /IMPLIB:build\temp.win32-2.7\Release\life.lib /MANIFESTFILE:build\temp.win32-2.7\Release\life.pyd.manifest Creating library build\temp.win32-2.7\Release\life.lib and object build\temp.win32-2.7\Release\life.exp python.exe -c "import life; print(life.life())" Traceback (most recent call last): File "", line 1, in AttributeError: 'module' object has no attribute 'life' Can you give a hint? -- --gv -- https://mail.python.org/mailman/listinfo/python-list
Re: Windows: subprocess won't run different Python interpreter
Thorsten Kampe wrote: > My goal is to verify that other shells/interpreters on Windows work > the same way as Python when running an application or creating a sub- > process. Cmd does not. What's else there? I have Bash here but that's > a Cygwin executable. And Cygwin Python does not work like Windows > Python. > > Any ideas? Is there a Python.exe in the Registry "App Paths". Either of these: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths or HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths -- --gv -- https://mail.python.org/mailman/listinfo/python-list
Re: The next major Python version will be Python 8
Michael Selik wrote: > It suddenly occurred to me that if Microsoft announced it's > Ubuntu-in-Windows feature today, no one would believe it. My feeling too, but this was announced 30 March. In the video in this link: http://www.cnx-software.com/2016/03/31/microsoft-brings-bash-on-ubuntu-on-windows-10/ they say Python inside Ubuntu-in-Windows works! Ref. time 03:03. -- --gv -- https://mail.python.org/mailman/listinfo/python-list
Re: Testing whether the VPN is running?
Cameron Simpson: > You might also want to check that the interface is up. > > My personal hack (not for a VPN, but for "being online", which turns my ssh > tunnels on and off) is to look in the output > of "netstat -rn" for a default route. This may imply that an alternative test > for you is to test for a route to your > VPN's address range? Just an idea. And for VPN in Windows *and* using WinPcap, one can check if this device exist: \Device\NPF_GenericDialupAdapter (controllable using 'sq query rasdial'). This works if you use PPTP or L2TP but not OpenVPN. BTW, a VPN on Windows doesn't come back up automatically after a sleep/hibernation. The WOSB tool at http://www.dennisbabkin.com/wosb/ could be handy. What happens with your VPN on Linux (?) after coming back from sleep/hibernation? Automatic or you need to script that too? -- --gv -- https://mail.python.org/mailman/listinfo/python-list
Re: extending PATH on Windows?
Dennis Lee Bieber wrote: >>> How can one search for files with DOS? >> >> dir /s /b \*add2path.* >> >> ChrisA > > Or move to PowerShell... > > Windows PowerShell > Copyright (C) 2009 Microsoft Corporation. All rights reserved. > > PS C:\Users\Wulfraed\Documents> Get-ChildItem -Path c:\ -Filter *add2path* > -Name -Recurse Clumsy IMHO. Try: c:\> envtool --path *ipython* Matches in %PATH: 12 Feb 2015 - 17:16:12: f:\ProgramFiler\Python27\Scripts\ipython-script.py 12 Feb 2015 - 17:16:12: f:\ProgramFiler\Python27\Scripts\ipython.exe 12 Feb 2015 - 17:16:12: f:\ProgramFiler\Python27\Scripts\ipython.exe.manifest 12 Feb 2015 - 17:16:12: f:\ProgramFiler\Python27\Scripts\ipython2-script.py 12 Feb 2015 - 17:16:12: f:\ProgramFiler\Python27\Scripts\ipython2.exe 12 Feb 2015 - 17:16:12: f:\ProgramFiler\Python27\Scripts\ipython2.exe.manifest 08 Feb 2015 - 12:48:56: f:\ProgramFiler\Python27\Scripts\ipython_win_post_install.py 7 matches found for "*ipython*". --- Or find a spec on *all partitions* using Everything Search engine: c:\> envtool --evry *ipython* Matches from EveryThing: ... 133 matches found for "*ipython*". --- Or for Python-path searches: c:\> envtool --python *ipython* Matches in "f:\ProgramFiler\Python27\python.exe" sys.path[]: 23 Jan 2016 - 13:50:30: f:\ProgramFiler\Python27\lib\site-packages\ipython-2.1.0-py2.7.egg\IPython\ 23 Jan 2016 - 13:50:26: f:\ProgramFiler\Python27\lib\site-packages\IPython\ 23 Jan 2016 - 13:50:30: f:\ProgramFiler\Python27\lib\site-packages\ipython-2.1.0-py2.7.egg\ 3 matches found for "*ipython*". - My envtool is at https://github.com/gvanem/EnvTool EveryThing is at http://voidtools.com/ -- https://mail.python.org/mailman/listinfo/python-list
Re: python.exe is not a valid win32 executable
Mark Lawrence wrote: CPython's Windows support now follows this lifecycle. A new feature release X.Y.0 will support all Windows releases whose extended support phase is not yet expired. Subsequent bug fix releases will support the same Windows releases as the original feature release (even if the extended support phase has ended). The reason for error message the OP reported is what the MSVC 2015 (?) linker puts in the PE optional header. From 'pedump python3.exe': Optional Header Magic 010B linker version14.00 ... file align200 required OS version 6.00 << !! Hence the error on Win-XP (i.e. 5.x). Wouldn't it be more elegant of Python (and it's installer) to put a '-subsystem:console,5.02' in the link flags? And then detect Win-XP later on and refuse a further install? -- --gv -- https://mail.python.org/mailman/listinfo/python-list
Re: A high-level cross-platform API for terminal/console access
"Chris Angelico" wrote: Ah, that might well be it. Does it work if you run: python -S -m pip install --upgrade win32api Hm. c:\>python2 -S -m pip install --upgrade win32api Collecting win32api Could not find any downloads that satisfy the requirement win32api No distributions at all found for win32api I think you mean 'pypiwin32'. Since: c:\>python2 -S -m pip install --upgrade pypiwin32 Requirement already up-to-date: pypiwin32 in g:\programfiler\python27\lib\site-packages So now, running 'setup.py install' in AsciiMatics' directory, all seems to install okay. But the samples have problems if launched from the sample directory! It seems to be related to my Windows associations for .png files; 'python2 win_demo.py' launches this: g:\util\Graphics\IrfanView\i_view32.exe G:\Programfiler\Python27\Lib\site-packages\AsciiMatics\samples\python.png G:\Programfiler\Python27\Lib\site-packages\AsciiMatics\samples\win_demo.py Yes, all on 1 line. Notice the 'win_demo.py' is last!!?? But 'python2 samples\win_demo.py' works fine (see attached screen-shot). Allthough it messes up the screen's scrollback buffer. Similar to how most PDcurses do on Windows :-( --gv-- https://mail.python.org/mailman/listinfo/python-list
Re: A high-level cross-platform API for terminal/console access
"Chris Angelico" wrote: On Thu, Oct 22, 2015 at 10:22 PM, Gisle Vanem wrote: IOError: [Errno 13] Permission denied: 'g:\\Programfiler\\Python27\\Lib\\site-packages\\win32\\win32api.pyd' - BTW, this is on Python 2.7.9 on Win-XP SP3. Does that file exist? A .pyd file is a DLL, so if it already exists and is in use, it's entirely possible it can't be overwritten (eg to upgrade it). It exists all right and I do have full access to that folder. I think the Errno 13 (=EACCESS) is due to another module (WConio.pyd) that seems gets loaded via my site-customize.py is using this win32api.pyd. Hence it's is in use and shutil fails in updating it. --gv -- https://mail.python.org/mailman/listinfo/python-list
Re: A high-level cross-platform API for terminal/console access
"Peter Brittain" wrote: I have recently been working on a terminal/console animation package (https://github.com/peterbrittain/asciimatics). I tried installing your package with "pip.exe -v install asciimatics". Some problem with pypiwin32 it seems: Installing collected packages: pypiwin32, future, Pillow, pyfiglet, asciimatics Cleaning up... Exception: Traceback (most recent call last): File "g:\Programfiler\Python27\lib\site-packages\pip-6.0.6-py2.7.egg\pip\basecommand.py", line 232, in main status = self.run(options, args) File "g:\Programfiler\Python27\lib\site-packages\pip-6.0.6-py2.7.egg\pip\commands\install.py", line 347, in run root=options.root_path, File "g:\Programfiler\Python27\lib\site-packages\pip-6.0.6-py2.7.egg\pip\req\req_set.py", line 549, in install **kwargs File "g:\Programfiler\Python27\lib\site-packages\pip-6.0.6-py2.7.egg\pip\req\req_install.py", line 751, in install self.move_wheel_files(self.source_dir, root=root) File "g:\Programfiler\Python27\lib\site-packages\pip-6.0.6-py2.7.egg\pip\req\req_install.py", line 960, in move_wheel_files isolated=self.isolated, File "g:\Programfiler\Python27\lib\site-packages\pip-6.0.6-py2.7.egg\pip\wheel.py", line 234, in move_wheel_files clobber(source, lib_dir, True) File "g:\Programfiler\Python27\lib\site-packages\pip-6.0.6-py2.7.egg\pip\wheel.py", line 212, in clobber shutil.copyfile(srcfile, destfile) File "g:\Programfiler\Python27\lib\shutil.py", line 83, in copyfile with open(dst, 'wb') as fdst: IOError: [Errno 13] Permission denied: 'g:\\Programfiler\\Python27\\Lib\\site-packages\\win32\\win32api.pyd' - BTW, this is on Python 2.7.9 on Win-XP SP3. --gv -- https://mail.python.org/mailman/listinfo/python-list
Re: Installed 3.5.0 successfully on Windows 10, but where is DDLs, Doc, Lib, etc?
eryksun wrote: The version of py.exe distributed with Python 3 is a 32-bit application, so when the debug output says it's looking in the "native" registry, it's referring to the WOW64 redirected registry path, i.e. "HKLM\Software\Wow6432Node\Python". If py.exe can't find your installation of Python 3 in the registry, then the installation is broken or non-standard. Try to repair or reinstall. Thanks for the detailed info. I fixed some paths under: HKEY_LOCAL_MACHINE\SOFTWARE\Python\PythonCore\3.5-32 Now my Python3.5 almost works. But something is wrong with the Python3 sys.prefix: c:> py -2 -c "import os, sys; print(sys.prefix)" F:\ProgramFiler\Python27 c:> py -3 -c "import os, sys; print(sys.prefix)" F:\ProgramFiler Where should I look for the reason for this? -- --gv -- https://mail.python.org/mailman/listinfo/python-list
Re: Installed 3.5.0 successfully on Windows 10, but where is DDLs, Doc, Lib, etc?
eryksun wrote:
Here's a slightly simpler way to open the folder:
py -3.5 -c "import os, sys; os.startfile(sys.prefix)"
And what to do if the Pylauncher itself seems confused or the
Registry settings for PythonCore is messed up? The WOW64 mess
MS has have seems to have caused some problems here. With:
c:\> set PYLAUNCH_DEBUG=1 & py -3 -c "import os, sys; print(sys.prefix)"
I get:
...
locating Pythons in 64bit registry
locate_pythons_for_key: unable to open PythonCore key in HKCU
locate_pythons_for_key: unable to open PythonCore key in HKLM
locating Pythons in native registry
locate_pythons_for_key: unable to open PythonCore key in HKCU
locate_pythons_for_key: F:\ProgramFiler\Python27\python.exe is a 32bit
executable
...
locate_pythons_for_key: F:\ProgramFiler-x86\Python35\python.exe: Systemet
finner ikke angitt bane.
locate_pythons_for_key:
F:\ProgramFiler-x86\Python35\PCBuild\win32\python.exe: Systemet finner ikke
angitt bane.
locate_pythons_for_key:
F:\ProgramFiler-x86\Python35\PCBuild\amd64\python.exe: Systemet finner ikke
angitt bane.
found no configured value for 'python3'
search for Python version '3' found no interpreter
Requested Python version (3) not installed
("Systemet finner ikke angitt bane." == "File not found").
This is non-sense. I do have Python2 + 3 both on PATH (but both 32-bits).
Not sure if PyLauncher looks for 64-bit registry entries only.
But is there a way for py.exe to use '%USERPROFILE%\Local\py.ini' only?
I failed to find any good documentation on it's format.
--
--gv
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Re: Issue: cannot successfully install Python 3 on Windows 7
Gilad Mayani wrote: I always get this message: the program can't start because api-ms-win-crt-runtime-I1-1-0.dll is missing from your computer. Is that really an 'I' in there? The .dll should really be named: %SystemRoot%\system32\api-ms-win-crt-runtime-l1-1-0.dll with an lower-case 'l'. (This .dll is itself a forwarder .dll to ucrtbase.dll). -- --gv -- https://mail.python.org/mailman/listinfo/python-list
Py_InitializeEx() in CygWin64's Python2.7
I've written a C-program that embeds Python 2.7.
It has worked fine for several years using MingW or MSVC. Now I'd like
to support the python2.7.exe that comes with CygWin64.
But it seems to fail inside 'Py_InitializeEx(0)' where it just prints:
ImportError: No module named site
What? Does really all Pythons needs a 'PYTHONPATH' set to point to the
site.py? Or is it only CygWin that is special here? Since if I do a
"set PYTHONPATH=/usr/lib/python2.7" in my shell, my program works.
These are some of the func-ptr and arguments I use during init:
Py_SetProgramName ("/cygdrive/f/gv/VC_project/EnvTool/src/envtool.exe")
Py_SetPythonHome ("/usr/lib/python2.7")
Py_InitializeEx(0) << libpython2.7.dll chokes inside here for a mysterious
reason.
I maybe naively assumes calling 'Py_SetPythonHome' is doing part of
what parsing the PYTHONPATH should do. But it doesn't seems so.
If I from my cmd-line do a:
c:\> f:\CygWin64\bin\python2.7.exe -c "import sys; print (sys.modules)"
I can see:
So what could be the reason it's not able to load and parse it
without a 'PYTHONPATH' set explicit?
--
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Re: Python 3.5 crashes on wrong %PYTHONHOME
Zachary Ware wrote: Is there any particular reason you're setting PYTHONHOME in the first place? I have several GNU Makefiles that picks up this variable (to find Python.h, python*.lib etc.). But using Python 27 and 35 w/o having a %PYTHONHOME set, seems to work fine. I have to revise those Makefiles. -- --gv -- https://mail.python.org/mailman/listinfo/python-list
Python 3.5 crashes on wrong %PYTHONHOME
I just installed the 32-bit Python 3.5b4 via the Web-installer. First, I was a bit annoyed by the fact it installed under 'f:\ProgramFiler-x86\Python35' instead of 'f:\ProgramFiler\Python35' as I customided for. But I guess this is a WOW64 thing. I'm on Win-8.1 (64-bit). But then I noticed the whole thing crashes when calling python35!Py_FatalError. On a simple 'python -v' command. Presumably because my env-var: PYTHONHOME=f:\Programfiler\Python27 (and not 'PYTHONHOME=f:\Programfiler\Python35'). Reading the message on this list, gave me the impression Python 2.7 and Python 3.5 can co-exist with no problem. Doesn't look the case so far. Is there another 'PYTHONxx' env-var to override 'PYTHONHOME' in this case? Or what should I do to keep on using both 27 and 35? For reference, the call-stack: ucrtbase!abort+0x4b python35!Py_FatalError+0xbc python35!Py_InitializeEx_Private+0x45b python35!Py_Main+0x72c python+0x11df KERNEL32!BaseThreadInitThunk+0x24 ntdll!__RtlUserThreadStart+0x2f ntdll!_RtlUserThreadStart+0x1b And some of the modules shown in WinDbg: ModLoad: 1c47 1c47c000 F:\ProgramFiler\Python35\python.exe ModLoad: 7772 7788e000 C:\Windows\SYSTEM32\ntdll.dll ModLoad: 7750 7764 C:\Windows\SYSTEM32\KERNEL32.DLL ModLoad: 76e2 76ef7000 C:\Windows\SYSTEM32\KERNELBASE.dll ModLoad: 6cd5 6d057000 F:\ProgramFiler\Python35\python35.dll ModLoad: 6e7e 6e7f5000 C:\Windows\SYSTEM32\VCRUNTIME140.dll (the new universal CRT from MS) -- --gv -- https://mail.python.org/mailman/listinfo/python-list
Re: PEP idea: On Windows, subprocess should implicitly support .bat and .cmd scripts by using FindExecutable from win32 API
Chris Angelico wrote: There's a specific search order. Back in the days of DOS, it was simply "com, then exe, then bat", but on modern Windowses, I think it's governed by an environment variable. You probably mean '%PATHEXT'. Mine is: .COM;.EXE;.BAT;.BTM;.CMD;.JS;.JSE;.WSF;.WSH;.MSC;.tcl;.py;.pyw;.pl;.htm;.html In my favourite shell 4NT, I simply can have: set .py=python Instead of the Explorer associations that the Python-installer puts in my registry. Revealed from my shell: c:\> assoc .py .py=py_auto_file c:\> ftype py_auto_file py_auto_file="F:\ProgramFiler\Python27\python.exe" "%1" In ShellExecuteEx(), what program gets launched for "py_auto_file" in this case, seems to be determined by the 'SHELLEXECUTEINFO:lpClass' member. I fail to see that Python uses this structure anywhere. -- --gv -- https://mail.python.org/mailman/listinfo/python-list
Re: l = range(int(1E9))
Cecil Westerhof wrote: If I execute: l = range(int(1E9) The python process gobbles up all the memory and is killed. The problem is that after this my swap is completely used, because other processes have swapped to it. This make those programs more slowly. Is there a way to circumvent Python claiming all the memory? By the way: this is CPython 2.7.8. On what OS? If I try something similar on Win-8.1 and CPython 2.7.5 (32-bit): python -c "for i in range(int(1E9)): pass" Traceback (most recent call last): File "", line 1, in MemoryError --gv -- https://mail.python.org/mailman/listinfo/python-list
Re: Python27.dll could not be found
Dave Angel wrote: When I ran Windows, I had written a simple utility that searched the PATH for a specified file. I called it which.bat to match the Linux equivalent. I've written a similar tool; envtool --path --python python27.dll Matches in %PATH: 15 May 2013 - 21:43:38: f:\ProgramFiler\Python27\python27.dll Matches in Python's sys.path[]: 15 May 2013 - 21:43:38: f:\programfiler\Python27\python27.dll (available at http://watt-32.net/misc/#envtool ) You can look to see where the system thinks the Python executable is located by doing ftype .py and seeing what it shows. Mine shows Python.File Then do assoc Python.File to see an actual path. That will give you the path of python.exe. Not pythonXX.dll (as the OP had problems with). But by Windows DLL loading rules, it's IMHO safer to have pythonXX.dll in the directory of python[w].exe. On Windows, ACAICR the Python MSI installer puts pythonXX.dll in %Windir\system32. So it depends on how the OP installed his Python. -- --gv -- https://mail.python.org/mailman/listinfo/python-list
Re: Python path on windows
Dave Angel wrote: Finally, when py.exe starts, it reads that first (shebang) line, and decides which python interpreter to actually use. py.exe? Do you mean python.exe? Is there a way to make python.exe ignore all Shebang lines in all scripts? I had many generated .py-files with: #!g:\ProgramFiler\Python27\python.EXE After transferring my Python tree to a new Win-8.1 PC, my Python tree was installed under "f:\ProgramFiler\" and my CD-ROM on "g:\" This caused those scripts to access my CD-ROM or pop-up a Win-GUI error dialogue if no CD-ROM was in the drive. Irritating. -- --gv -- https://mail.python.org/mailman/listinfo/python-list
Re: Odd version scheme
Tim Chase wrote:> So the test should actually be something like
if LooseVersion(QtCore.PYQT_VERSION_STR) < LooseVersion("4.10"):
balk()
That's exactly what they do now in IPython/utils/version.py with
the comment:
Utilities for version comparison
It is a bit ridiculous that we need these.
Not sure why this is "ridiculous".
I had an "old" version of IPython v0.13 installed! I've upgraded
to v2.10 and all is good.
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Odd version scheme
I tried using Interactive Python with a PyQt4 console:
"IPython.exe qtconsole"
But got a
"ImportError: IPython requires PyQT4 >= 4.7, found 4.10.4"
Looking at Ipython's check (in site-packages\IPython\external\qt.py):
if QtCore.PYQT_VERSION_STR < '4.7':
raise ImportError("IPython requires PyQt4 >= 4.7, found
%s"%QtCore.PYQT_VERSION_STR)
So even if '4.10' < '4.7', my '4.10' is newer. What odd version scheme is
this really? I just edited that line to read:
if QtCore.PYQT_VERSION_STR < '4.10':
Seems to be working fine now.
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Re: Non-unique dirs in sys.path
Ian Kelly wrote: I checked my own Python 2.7 installation and discovered that I have the same problem, although without the different casing. Perusing the .pth files in site-packages turns up setuptools.pth, which just contains the site-packages path. Removing that file solves the issue for me. That was the case here too! Deleted my setuptools.pth and the "problem" was gone. It would be nice to know how these .pth files are involved in extending the 'sys.path[]'. Who does that and how? Any good reference on that? -- --gv -- https://mail.python.org/mailman/listinfo/python-list
Non-unique dirs in sys.path
I'm having some trouble understanding why my Python 2.7.9
has the '%PYTHONHOME%\lib\site-packages' listed multiple
times.
I cooked up this .bat file to demonstrate the issue:
@echo off
setlocal
set PYTHONPATH=
python -c "import sys; [sys.stdout.write('%%s\n' %% p) for (i,p) in
enumerate(sys.path)]" | sort --ignore-case
which produces:
f:\Documents and Settings\Gisle
Vanem\Programdata\Python\Python27\site-packages
f:\windows\system32\python27.zip<< !! doesn't exist, but okay.
G:\Programfiler\Python27
g:\Programfiler\Python27\DLLs
g:\Programfiler\Python27\lib
g:\Programfiler\Python27\lib\lib-tk
g:\Programfiler\Python27\lib\plat-win
g:\Programfiler\Python27\lib\site-packages << !!
g:\programfiler\python27\lib\site-packages << !!
...
Why are these listed twice with different casing? One
would assume that Python on Win32 would be case-insensitive.
Some .pth-file to blame here?
I've checked that PYTHONPATH is not defined elsewhere. Like in:
HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Environment
or
HKCU\Environment
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Re: Command Line Inputs from Windows
Ken Stewart wrote: Here is a sample key: S1-5-21-1560217580-722697556-320042093-1000-Classes py_auto_file shell open command The corrected data for the key looks like this: "C:\Python34\python.exe" %1 %* Yikes! You use the awful cmd.exe as the shell don't you? An advice is to use something like TakeCommand or 4NT (from jpsoft.com) and create an "executable extension" for .py/.pyw files. Like I've done: set .py=C:\Python34\python.exe set .pyw=C:\Python34\pythonw.exe No need to fiddle with registry settings. -- --gv -- https://mail.python.org/mailman/listinfo/python-list
Re: set environmental variable from python
"Artur Bercik" wrote: I have to set several variables so it would be easier if I could set them from Python. You can write a Python-script that generates a .bat file (in your %TEMP-dir?). And run this .bat file when Python ends. Put it all in an alias or another .bat file. E.g. untested: alias set_env=python -o %TEMP%\set_env.bat & %TEMP%\set_env.bat --gv -- https://mail.python.org/mailman/listinfo/python-list
Re: What can Nuitka do?
"Chris Angelico" wrote: The only other time I've been waiting for X display was when I was mobile, on a 3G connection, and using X11 forwarding on an SSH link back to my home LAN. Doing X11 calls over a network could really be a nuisance for others. And an archaic design IMHO. I remember approx. 10 years ago a neighboring dept. at my work effectively killed our 10 MB/s Ethernet segment with such traffic (due to a misconfigured switch/router?). Running an ethernet analyzer showed a single X11 host-server session occupied ~80% bandwidth. AFAICR, it was a Sun workstation. A real PITA. --gv -- https://mail.python.org/mailman/listinfo/python-list
Re: Working with the set of real numbers (was: Finding size of Variable)
"Grant Edwards" wrote: Not *any* computer? Not in *any* way? The Python built-in "float" type "works with the set of real numbers", in a way. The only people who think that are people who don't actualy _use_ floating point types on computers. FPU parsing the IEEE spec, or?. I didn't quite parse what *you* wrote. To paraphrase: #include "there are FP_NORMAL and FP_SUBNORMAL people in the world; those who understand IEEE 754 and those who don't." .. --gv -- https://mail.python.org/mailman/listinfo/python-list
Re: Newcomer Help
"Walter Hughey" wrote: Thank you for your reply. One quick question, when I reply should it be replay to all or to the person who sent the emial? When replying, the most important thing to remember is... order. A: Because it messes up the order in which people normally read text. Q: Why is it such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail? Get the picture now newcomer? --gv -- this crap came from you - Apple does install a version of Python, normally a somewhat older version. My computer has 2.5 and 2.6 installed and I have opened it and inserted code that works. I do need a way to write the code, test it, and then save a copy to turn in for the assignment. I was not aware that a normal text editor would work. I shall definitely look at that later today. Walter - Original Message - From: "Rustom Mody" To: python-list@python.org Sent: Monday, February 10, 2014 11:07:14 AM Subject: Re: Newcomer Help On Monday, February 10, 2014 9:40:22 PM UTC+5:30, Walter Hughey wrote: I am new to Python programming, actually new to any programming language. I sent the email below to the "python...@python.org a few days ago. So far I have not seen a reply, actually, I have not seen anything from pythonmac in any emails although I am supposed to be a member. I don't know if I am sending these to the correct place or if I am not receiving emails from the pythonmac list. I would appreciate any assistance either in how do I get to the pythonmac list or answers to the issue below. I went to the pythonmac list because I am trying to run Python 3.3 on a Mac computer. Thank you, Walter From: "Walter Hughey" To: python...@python.org Sent: Friday, February 7, 2014 11:54:49 AM Subject: Newcomer Help Greetings, I am new at Python programming, technically a newbie at writing programming code. I have been involved in the maintenance of computers for several years and have decided to increase my knowledge and experience. I am taking a course that - although not a programming course - does require writing of code. I am trying to use Python to write the code. I use a Mac computer and the first issue is getting working with Python. The computer I currently use is running Mac OS X 10.6.8, Intel Core i5 Processor, with 4GB RAM. It has Python 2.3, 2.5, and 2.6 installed by Apple. I have added Python 3.3, the version our Professor recommended. I have checked out the Python installed by Apple and can enter in code and it works, but I need to create a file, run it, and then provide it for the Professor to grade and I don't know how with the Apple installed version. While reading about Python, I saw comments about the note concerning outdated software: If you are using Python from a python.org 64-bit/32-bit Python installer for Mac OS X 10.6 and later, you should only use IDLE or tkinter with an updated third-party Tcl/Tk 8.5, like ActiveTcl 8.5 installed. I located, downloaded and installed the recommended version of ActiveTcl 8.5.15.0. When I open Idle, I see a warning that "The version of Tcl/Tk (8.5.7) in use may be unstable." I received this warning both before and after installing the software above. I open Idle, choose "New File" then most often the computer will freeze, Idle does nothing, cannot enter text into the text box, cannot close the application either with the red circle or by selecting Idle>Close Idle. As often as that, Idle freezes as soon as I open new file, and I cannot close without resorting to Force Quit. I have removed and re-installed Python after downloading and installing the Tcl/Tk software and it does not help. I have seen this work fine on a Mac running Mac OS X 10.8.3. I really just need to get this working on the older version. A am not only new to Python, I am new on this list and hope I have started my stay here in the correct manner! Hi! You have started on a clear note and are welcome here. I dont know anything about macs so hopefully someone else will give you more specific answers. However can you check that python interpreter runs in a shell, and that after starting it if you type say: 2 + 3 RETURN you get 5 If that is the case you can still develop the way most python programmers develop, viz Write your code in a normal text editor Load it into the interpreter Check it Go back to the editor and continue writing/correcting the code -- https://mail.python.org/mailman/listinfo/python-list -- https://mail.python.org/mailman/listinfo/python-list -- https://mail.python.org/mailman/listinfo/python-list
Vedr: What does """ means in python?
Gisle V.
"Computers are useless. They can only give answers" --Pablo Picasso
Chris Angelico wrote:
> For SQL? Ignore the extra spaces, it's a free-form language. The only
> reason to consider dedent() would be if you're worried about how your
> log files will look. The actual execution of SQL won't be bothered by
> newlines and spaces/tabs.
Regrading handy uses of ''', you learned me one trick when using Python
code in a Windows .bat file:
rem = '''
@echo off
echo This is
batch
\python32\python %0
echo All done
exit /b
rem '''
import
sys
print("This is Python")
for i,p in
enumerate(sys.path):
print('sys.path[%2d]: %s' % (i, p))
print("Python
done")
You'll have a variable in Python called 'rem' which contains all
your
batch code :) It exploits the fact that 'rem' makes a
one-line
comment, but the triple quotes go across multiple lines.
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Re: Odd msg received from list
"Chris Angelico" wrote: I agree in general, but I happen to be pretty familiar with Mailman alerts, and this one was genuine. Also, it pointed to what does appear to be the right address (mail.python.org). There's definitely something going around that's causing problems for gmail users; It happended to me too. And I'm a Yahoo user. I clicked the MailMan confirmation link and all emails seems to be received now (comparing to what's on the NNTP group). --gv -- https://mail.python.org/mailman/listinfo/python-list
Re: how to find out utf or not
"Steven D'Aprano" wrote:
If myVar is a Unicode string, you don't need to care about the encoding
(UTF-8 or otherwise) until you're ready to write it to a file. Then I
strongly recommend you always use UTF-8, unless you have to interoperate
with some old, legacy system:
assert isinstance(myVar, unicode)
byte_string = myVar.encode('utf-8')
An excellent summary of the mystics around text-encoding. Thank you.
--gv
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Re: Running code from source that includes extension modules
"Michael Schwarz" wrote: So how do I run my code so it will find the built extension module? Do I pass the output directory on the command line manually or is there some other solution? I would like to still be able to run the code from the source directory as I'm using PyCharm to edit and debug the code. Doesn't Python on Linux (I assume that since you mentioned the module's .so) support having current-dir '.' in $PYTHONPATH? Works fine on Windows. Check with "python -v script.py | grep ". --gv -- https://mail.python.org/mailman/listinfo/python-list
Re: DNS query against a specific server.
"Chris Angelico" wrote: There are a few Python DNS modules. It means adding another dependency, but perhaps not as large as twisted. And of course, you could always manually send UDP packets and listen for responses, but that seems a little unnecessary :) Then there is pycares; "a Python module which provides an interface to c-ares c-ares is a C library that performs DNS requests and name resolves asynchronously.". I have good experience wih C-ares and it can set specific nameservers. Ref: https://pypi.python.org/pypi/pycares/0.3.0 --gv -- https://mail.python.org/mailman/listinfo/python-list
Calling Py_Main() and parsing the output from C
Hello Python & C-experts.
I'm trying to embed python27.dll in a C-program written in
MingW-gcc 4.7.2. I've successfully done these initial steps:
typedef int (*Py_Main_t) (int argc, char **argv);
handle = LoadLibrary ("python27.dll");
py_main = (Py_Main_t) GetProcAddress (handle, "Py_Main");
argv[0] = who_am_I;/* the .exe of the embedding program. python*.dll
doesn't seems to care what this is */
argv[1] = (char*) "-c";
argv[2] = PYTHON_CMD; /* see below */
argv[3] = NULL;
rc = (*py_main) (3, argv);
DEBUG: pyembed.c(76): Calling Py_Main():
argv[0] = "G:\vc_2010\VC\Projects\EnvTool\src\envtool.exe"
argv[1] = "-c"
argv[2] = "import sys;[sys.stdout.write('%s\n' % p) for (i,p) in
enumerate(sys.path)]"
argv[3] = NULL.
Which produces the expected 'sys.path[]:
g:\Programfiler\Python27\lib\site-packages\pyzmq-2.2.0.1-py2.7-win32.egg
g:\Programfiler\Python27\lib\site-packages\nose-1.2.1-py2.7.egg
...
But I'd like to grab the stdout from Py_Main() into a pipe, mmap-file or similar
for the calling program to parse. Before I used the embedding solution, I simply
spawned python.exe using my shell and popen(). Then parsed the output
using fgets(). This work fine. But I'd like to try embedding now. Since avoiding
the shell should be faster. No?
How can I accomplish the grabbing of Py_Main() output simplest? Is creating
a memory-mapped file in the calling program a good idea? Can Py_Main() print
to that? If so, how? I'm on Win-XP SP3.
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Modules list-tool
Are anyone aware of a tool that can show me at run-time which modules (pyd/dll) are loaded into a Python program at a specific time (or over time)? To clarify, e.g. when running a sample from PyQt4 (examples\tutorials\addressbook\part1.pyw) and using Process Explorer [1], I can launch WinDbg from it and get this list of modules: ModLoad: 1d00 1d00a000 G:\ProgramFiler\Python27\python.EXE ModLoad: 7c90 7c9b1000 F:\WINDOWS\system32\ntdll.dll ModLoad: 7c80 7c8f7000 F:\WINDOWS\system32\kernel32.dll ModLoad: 1e00 1e261000 f:\windows\system32\python27.dll ModLoad: 7e41 7e4a1000 F:\WINDOWS\system32\USER32.dll ModLoad: 77f1 77f59000 F:\WINDOWS\system32\GDI32.dll ModLoad: 77dc 77e6a000 F:\WINDOWS\system32\ADVAPI32.dll ModLoad: 77e7 77f03000 F:\WINDOWS\system32\RPCRT4.dll ModLoad: 77fe 77ff1000 F:\WINDOWS\system32\Secur32.dll ModLoad: 7c9c 7d1d8000 F:\WINDOWS\system32\SHELL32.dll ModLoad: 77c0 77c58000 F:\WINDOWS\system32\msvcrt.dll ModLoad: 77f6 77fd6000 F:\WINDOWS\system32\SHLWAPI.dll ModLoad: 7852 785c3000 f:\windows\WinSxS\x86_Microsoft.VC90.CRT_1fc8b3b9a1e18e3b_9.0.30729.6161_x-ww_31a54e43\MSVCR90.dll ModLoad: 7637 7638d000 f:\windows\system32\IMM32.DLL ModLoad: 62f2 62f29000 f:\windows\system32\LPK.DLL ModLoad: 7542 7548b000 f:\windows\system32\USP10.dll ModLoad: 773c 774c3000 f:\windows\WinSxS\x86_Microsoft.Windows.Common-Controls_6595b64144ccf1df_6.0.2600.6028_x-ww_61e65202\comctl32.dll ModLoad: 5d5d 5d66a000 F:\WINDOWS\system32\comctl32.dll ModLoad: 78aa 78b5f000 f:\windows\system32\MSVCR100.dll ModLoad: 00d9 00f29000 g:\ProgramFiler\Python27\lib\site-packages\PyQt4\QtCore.pyd ModLoad: 6700 6726 g:\ProgramFiler\Python27\lib\site-packages\PyQt4\QtCore4.dll ModLoad: 774d 7760e000 F:\WINDOWS\system32\ole32.dll ModLoad: 71aa 71ab7000 f:\windows\system32\WS2_32.dll ModLoad: 71a9 71a98000 f:\windows\system32\WS2HELP.dll ModLoad: 7848 7850e000 f:\windows\WinSxS\x86_Microsoft.VC90.CRT_1fc8b3b9a1e18e3b_9.0.30729.6161_x-ww_31a54e43\MSVCP90.dll ModLoad: 00a6 00a73000 g:\ProgramFiler\Python27\lib\site-packages\sip.pyd ModLoad: 011f 0177f000 g:\ProgramFiler\Python27\lib\site-packages\PyQt4\QtGui.pyd ModLoad: 6500 657c4000 g:\ProgramFiler\Python27\lib\site-packages\PyQt4\QtGui4.dll ... - My example may be mooth since part1.pyw above (when I enter the debugger) is just waiting for events. The stack of pythonw.exe as shown in Process Explorer: ... ntdll.dll!ZwWaitForMultipleObjects+0xc kernel32.dll!WaitForMultipleObjectsEx+0x12c USER32.dll!RealMsgWaitForMultipleObjectsEx+0x13e QtCore4.dll!QEventDispatcherWin32::processEvents+0x3c3 ntdll.dll!RtlAcquirePebLock+0x28 Is there a tool that can do something similar? (written in Python maybe?). But a bit simpler to use than my current method. Just launch it from the command-line; something like "pyXX part1.pyw " [1] http://technet.microsoft.com/en-gb/sysinternals/bb896653 --gv -- http://mail.python.org/mailman/listinfo/python-list
Re: Python newbie trying to embed in C++
"Marwan Badawi" wrote: I just noticed that my reply went to the message sender and not to the newsgroup, so I'm posting again: thanks, I'll look into that. Yes, I often do that too; i.e. I'm subscribed to python-list@python.org and get all messages from comp.lang.python mirrored to the ML a bit later. I prefer the mailing-list over comp.lang.python since my NNTP server (eternal-september.org) is rather slow and my ISP has deprecated NNTP long time ago. I saw you uses Thunderbird on Windows. I'm not sure how it by default handles a reply-to when there is no "Reply-to" field in the header. To the address in "From" / "Sender" or what? I wish the NNTP-mailing list gateway could add a "Reply-to: ". Since I'm getting the messages via the ML, I think it would be logical that the replies should by default go to the ML too. --gv -- http://mail.python.org/mailman/listinfo/python-list
Re: FYI: AI-programmer
"Chris Angelico" wrote: That's not artificial intelligence, though. It's artificial program generation based on a known target output. The "Fitness" calculation is based on a specific target string. This is fine for devising a program that will produce the entire works of Shakespeare, since there You mean, art generation (writing Shakespearian texts) is a process of generating "known target output"?. If we talk about good art (not kitch), I disagree. For reference, "Infinite Monkey Teorem" is at http://en.wikipedia.org/wiki/Infinite_monkey_theorem Disregarding the probability math in the above, the question IMHO boils down to whether "art can be produced by accident" (quote from above). I seems to recall elephant painting selling for lots of dollars some years ago. And long dull poems written by computers. Fooled a lot of people. As suggested in RFC 2795 [1], the resources required to implement such a project would also have other uses. Like the Infinite Improbability Drive, I did notice that RFC was written on 1 April 2000 :-) --gv -- http://mail.python.org/mailman/listinfo/python-list
FYI: AI-programmer
Here is something interesting that you pythonistas might be interested in: http://www.primaryobjects.com/CMS/Article149.aspx """This article describes an experiment to produce an AI program, capable of developing its own programs, using a genetic algorithm implementation with self-modifying and self-improving code. """ The above experimental BrainF** language was written using C#. So who will be the first to make an AI-language in Python that generates it's own program? --gv -- http://mail.python.org/mailman/listinfo/python-list
Re: pylint or similar to test version-specific language constructs?
"jkn" wrote: I have to write python code which must run on an old version of python (v2.4) as well as a newer (v2.7). I am using pylint and would like to check if is possible to check with pylint the use of operators etc. which are not present in 2.4; the ternary operator springs to mind. No idea about PyLint. Why not install Python 2.4 and test with that? Sounds safer IMHO. -gv -- http://mail.python.org/mailman/listinfo/python-list
Re: Calculate Big Number
"Steven D'Aprano" wrote:
py> from timeit import Timer
py> t1 = Timer("(a**b)*(c**d)", setup="a,b,c,d = 10, 25, 2, 50")
py> min(t1.repeat(repeat=5, number=10))
0.5256571769714355
So that's about 5 microseconds on my (slow) computer.
That's pretty fast. So is there still a need for a GMP python-binding like
gmpy? http://code.google.com/p/gmpy/wiki/IntroductionToGmpy
GMP can include optimized assembler for the CPU you're using. But
I guess it needs more memory. Hence disk-swapping could be an issue
on performance.
--gv
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Re: New to python, do I need an IDE or is vim still good enough?
"Wayne Werner" wrote: Yep. That's how I feel. I had used ViEmu in Visual Studio for coding in .NET at work - but I found that the buffers & macros were more powerful. So now I do most of my programming in Vim, and only head to VS if I need autocomplete or some of it's auto-generation tools. Learning X different IDEs for different languages and uses can be confusing. So if you use Visual-Studio a lot there is Python Tools for VS [1]. A great but kinda slow extension to VS. Sticking to VS is also useful if one does Swig and need to debug your crashing .pyd modules. [1] http://pytools.codeplex.com/ --gv -- http://mail.python.org/mailman/listinfo/python-list
Re: Question about nested loop
"Isaac Won" wrote: while c < 10: c = c + 1 for columns in ( raw.strip().split() for raw in f ): b.append(columns[c]) y = np.array(b, float) print c, y I thought that can get the arrays of the columns[5] to [10], but I only could get repetition of same arrays of columns[5]. I don't pretend to know list comprehension very well, but 'c' isn't incremented in the inner loop ( .. for raw in f). Hence you only append to columns[5]. Maybe you could use another 'd' indexer inside the inner-loop? But there must a more elegant way to solve your issue. (I'm a PyCommer myself). --gv -- http://mail.python.org/mailman/listinfo/python-list
Re: Running a curl command within py script
"Smaran Harihar" wrote: i found pycurl to execute python curl command but not sure how I can execute the curl command using the pycurl. curl -u admin:geoserver -v -XPUT -H 'Content-type: text/plain' -d 'file:/var/www/geo/shapefile/csvQshp/Quercus_iltisii.shp' http://localhost:8080/geoserver/rest/workspaces/acme/datastores/Quercus_iltisii/external.shp ? Off-topic, but here's an idea. Use the 'curl --libcurl foo' option to see what setopt() calls to use in PyCurl. Like: import sys, pycurl c = pycurl.Curl() c.setopt (c.URL, 'http://localhost:8080/geoserver/rest/workspaces/acme/datastores/Quercus_iltisii/external.shp') c.setopt (c.USERPWD, 'admin:geoserver') c.setopt (c.POSTFIELDS, 'file:/var/www/geo/shapefile/csvQshp/Quercus_iltisii.shp'); etc. --gv -- http://mail.python.org/mailman/listinfo/python-list
Re: Python on Windows
"Tim Golden" wrote: In general, you'll want to be using a mechanism such as pip: http://pypi.python.org/pypi/pip which will look things up on PyPI so you can just do "pip install newmodule". And if you have a pip.bat from some Perl installation sitting before python's Scripts dir in your %PATH, remember to use "pip.exe install newmodule" instead. My Strawberry Perl has this "Perl Installation Package". Maybe I should rearrange my %PATH? --gv -- http://mail.python.org/mailman/listinfo/python-list
Re: for-loop on cmd-line
"Dave Angel" wrote: Why would you write some C-program just to save having two separate files, one batch and one for the script? For that matter, several answers have given you approaches that didn't involve list comprehensions, including merging the two in a single file, using an initial variable of rem=""" Like I wrote; use popen() or system() from a C-program (an env-var checker) that's not really related to Python programming. But rather to check various stuff needed for C-programming . Like walking the list of %INCLUDE / %C_INCLUDE_PATH dirs to figure out what headers are where. So I'd just as well add an option to check for Python paths too (if Python is installed that is). What are your real constraints? Are you just playing code-golf? That too. --gv -- http://mail.python.org/mailman/listinfo/python-list
Re: for-loop on cmd-line
wrote in comp.lang.python (my ISP no longer updates this group. Last message is from 8. April. Does the postings to the python mailing-list automatically get reposted to comp.lang.python?) C:\Windows\system32\python32.zip c:\python32\DLLs I see a similar result: f:\Windows\system32\python27.zip Where is it determined that python27.zip should be in sys.path? I have no such file anywhere. I'm using ActivePython 2.7.2. --gv -- http://mail.python.org/mailman/listinfo/python-list
Re: for-loop on cmd-line
"Dave Angel" wrote: it has nothing to do with being on a command line. You're using semicolon to combine several statements, and there are restrictions on what can be combined that way. One restriction is the looping constructs, for, if, while. Ok, I suspected something like that. You can do it easily enough with a list comprehension. Let us know if you can't work that out. Later. I'm only scratching the surface of Python. Any reason why you don't just make a one-file python script, and run that instead of your one line batch file? I though of calling that python line from a C-program using popen() and parsing the output. Since popen() on Win32 AFAIK doesn't accept multiple lines, I guess I must write a .py-file to %TEMP first. Thank to all. --gv -- http://mail.python.org/mailman/listinfo/python-list
for-loop on cmd-line
Hello list. I'm a newbie when it comes to Python.
I'm trying to turn this:
def print_sys_path():
i = 0
for p in sys.path:
print ('sys.path[%2d]: %s' % (i, p))
i += 1
into a one-line python command (in a .bat file):
python -c "import sys,os; i=0; for p in sys.path: print('sys.path[%%2d]: %%s' %%
(i, p)); i+=1"
But:
File "", line 1
import sys,os; i=0; for p in sys.path: print('sys.path[%2d]: %s' % (i, p));
i+=1
^
SyntaxError: invalid syntax
The caret is on the 'for'. What's the problem?
--gv
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FOX Toolkit
In http://docs.python.org/faq/gui.html I came across FOX Toolkit and the binding FXPy. The latter, it seems is no longer officially supported (hasn't for the last 7-8 years). So my question. Has anybody to your knowledge tweaked FOX and FXPy to work with Python 2.7? --gv -- http://mail.python.org/mailman/listinfo/python-list
