Craig McQueen added the comment:
One ongoing weakness I see with this situation is that it's difficult to code a
suitable work-around if a user wants to zip files that have a date < 1980 (e.g.
to zip it with a datestamp of 1-Jan-1980).
https://stackoverflow.com/q/45703747/60075
I am try
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Craig McQueen added the comment:
I notice that the C++11 library has a discard() member function for its random
generators, which is effectively a jumpahead operation. It seems that the C++11
library has implemented discard() for the Mersene Twister generator. If
jumpahead() is technically
Craig McQueen added the comment:
C++11 Mersenne Twister discard() member function:
http://www.cplusplus.com/reference/random/mersenne_twister_engine/discard/
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Craig McQueen added the comment:
StackOverflow question about Mersenne Twister jumpahead:
http://stackoverflow.com/q/4184478/60075
which refers to this:
http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/JUMP/index.html
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Craig McQueen added the comment:
Alexander Belopolsky wrote:
No. Seconds since the epoch is neither local nor UTC. It is just
an elapsed number of seconds since an agreed upon time called the
epoch.
This statement just seems wrong. And I have just been confused by the current
Craig McQueen pyt...@craig.mcqueen.id.au added the comment:
That's definitely an improvement. It gets further, but on my PC, the compile
fails:
...
c:/mingw/bin/../lib/gcc/mingw32/4.5.0/../../../../mingw32/bin/ld.exe: cannot
find -lmsvcr100
collect2: ld returned 1 exit status
error: command
Craig McQueen pyt...@craig.mcqueen.id.au added the comment:
I downloaded the latest MinGW, and now it tells me:
...
c:\mingw\bin\gcc.exe -mno-cygwin -mdll -O -Wall -IC:\Python33\include
-IC:\Python33\PC -c python3/src/_cobs_ext.c -o bui
ld\temp.win32-3.3\Release\python3\src\_cobs_ext.o
cc1.exe
Craig McQueen pyt...@craig.mcqueen.id.au added the comment:
It sounds as though the option '-mno-cygwin' is related to issue #12641.
Does that mean I need to find a version of MinGW that is old enough to support
the option '-mno-cygwin', but new enough to include a library for msvcr100
Craig McQueen pyt...@craig.mcqueen.id.au added the comment:
I've come across this issue when trying to build extensions for Python 3.3 on
Windows, needing a recent enough MinGW to provide a library for msvcr100. See
issue #15315.
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Craig McQueen pyt...@craig.mcqueen.id.au added the comment:
It would be great if this could be sorted out in time for Python 3.3. Otherwise
I don't think we'll be able to use MinGW to build extensions in Windows. Unless
there is a version of MinGW which supports the -mno-cygwin option, as well
Craig McQueen pyt...@craig.mcqueen.id.au added the comment:
I've succeeded in building an extension for Python 3.3 (at least, on Windows
XP, 32-bit; haven't tried any 64-bit), by the hack of copying libmsvcr100.a
from a recent MinGW release (20120426) into an older MinGW release (20101030).
I
New submission from Craig McQueen pyt...@craig.mcqueen.id.au:
I'm trying this with my 'cobs' Python package:
c:\Python33\python.exe setup.py build --compiler=mingw32 bdist_msi
With Python 3.3 beta, it fails with an exception:
ValueError: Unknown MS Compiler version 1600
It works
Craig McQueen pyt...@craig.mcqueen.id.au added the comment:
So this has been rejected I see. Too bad, since I stub my metaphorical toe on
this issue from time to time. Just for the record, here is an example:
http://stackoverflow.com/questions/4130936/perfect-hash-function/6976723#6976723
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Craig McQueen pyt...@craig.mcqueen.id.au added the comment:
I'm attaching a file that I used (in Python 2.x).
It's a little rough--I manually commented and uncommented various lines to see
what would change under various circumstances. But at least you should be able
to see what I was doing
Craig McQueen pyt...@craig.mcqueen.id.au added the comment:
I should be able to attach my test code. But it is at my work, and I'm on
holidays for 2 more weeks. Sorry 'bout that!
I do assume that Python 3 greatly simplifies this.
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Craig McQueen pyt...@craig.mcqueen.id.au added the comment:
http://code.activestate.com/recipes/577016-path-entire-split-commonprefix/
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Craig McQueen pyt...@craig.mcqueen.id.au added the comment:
I've seen the changes Mr Pitrou made, both for the 2.x and 3.x docs. That's a
good improvement--thanks very much.
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Craig McQueen pyt...@craig.mcqueen.id.au added the comment:
The documentation implies that memoryview always accesses bytes:
* len(view) returns the total number of bytes in the memoryview, view.
* Taking a single index will return a single byte.
But, the following example shows
Craig McQueen pyt...@craig.mcqueen.id.au added the comment:
My previous comment was referring to Python 3.x, by the way. Python 2.7 has not
implemented the buffer protocol for `array`.
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New submission from Craig McQueen pyt...@craig.mcqueen.id.au:
I stumbled across Template Strings of PEP 292 by accident recently. I'd never
heard of it before.
I'm familiar with the string interpolation aka String Formatting
Operations, and I know to find that in the docs under Standard Types
New submission from Craig McQueen pyt...@craig.mcqueen.id.au:
I have just been trying to figure out how string interpolation works for %s,
when Unicode strings are involved. It seems it's a bit complicated, but the
Python documentation doesn't really describe it. It just says %s converts any
Craig McQueen pyt...@craig.mcqueen.id.au added the comment:
Another thing I discovered, for Example 1:
4. If test_object.__str__() returns a Unicode object (for some reason), and
test_object.__unicode__() does not exist, then the Unicode value from the
__str__() call is used
Craig McQueen pyt...@craig.mcqueen.id.au added the comment:
To further explain, I had code e.g.:
parser.add_option(u'-s', u'--seqfile', dest='seq_file_name', help=u'Write
sequence file output to FILE', metavar=u'FILE')
I had to remove the unicode designator for the first parameter
New submission from Craig McQueen pyt...@craig.mcqueen.id.au:
Working in Japan, I find it very helpful to be able to read full Unicode
arguments in Python 2.x under Windows 2000/XP. So I am using the following:
http://stackoverflow.com/questions/846850/how-to-read-unicode-characters-from
Craig McQueen pyt...@craig.mcqueen.id.au added the comment:
My program currently uses ASCII options, so I can change the Unicode string
parameter to byte string. The optparse module still seems to match the option
against the incoming Unicode argv, I guess by implicit string conversion
Craig McQueen pyt...@craig.mcqueen.id.au added the comment:
A follow-on re the cx_Freeze issue: I looked at the source code, and found it
doesn't seem to be doing any thread creation. But I found that in the
initscripts/Console.py, there are the following lines:
if sys.version_info[:2
Craig McQueen pyt...@craig.mcqueen.id.au added the comment:
So it looks as though this isn't going in to Python 2.7.
How about 3.x?
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New submission from Craig McQueen pyt...@craig.mcqueen.id.au:
The type codes for array.array are platform-dependent.
The type codes are similar to those for the struct module. It would be helpful
for array.array to adopt the struct module's = format specifier prefix, to
specify standard sizes
Craig McQueen pyt...@craig.mcqueen.id.au added the comment:
From my limited experience using cx_Freeze 4.1.2 with Python 2.6.5, it seems
that this issue is triggered in a cx_Frozen program simply by having `import
threading` in the program. I'm not sure what cx_Freeze is doing that makes
Craig McQueen pyt...@craig.mcqueen.id.au added the comment:
Sorry I should have said, I'm running on Windows 2000 SP4.
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Craig McQueen pyt...@craig.mcqueen.id.au added the comment:
\MinGW\bin\ld.exe -v
GNU ld (GNU Binutils) 2.20
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Craig McQueen pyt...@craig.mcqueen.id.au added the comment:
I just realised--I didn't have c:\mingw\bin in my path. Once I added that to
the path, then the build worked fine.
So I guess the issue is only that the error message is somewhat cryptic
Craig McQueen pyt...@craig.mcqueen.id.au added the comment:
I tried it in Python 3.1.2.
\Python31\python.exe setup.py build --compiler=mingw32
I got a stack-trace:
...
File C:\Python31\lib\distutils\cygwinccompiler.py, line 280, in __init__
CygwinCCompiler.__init__ (self, verbose
New submission from Craig McQueen pyt...@craig.mcqueen.id.au:
I tried to build a C extension in Python 3.1.2.
\Python31\python.exe setup.py build --compiler=mingw32
I got a stack-trace:
...
File C:\Python31\lib\distutils\cygwinccompiler.py, line 280, in __init__
CygwinCCompiler
Craig McQueen pyt...@craig.mcqueen.id.au added the comment:
Sure can--done. Issue #8384.
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Craig McQueen pyt...@craig.mcqueen.id.au added the comment:
This bug was confirmed to no longer be present for Python 2.6.4, however it is
still present for Python 3.1.1. Could someone with open privileges re-open
this please?
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Craig McQueen pyt...@craig.mcqueen.id.au added the comment:
I ran it as follows:
\python31\python.exe setup.py build --compiler=mingw32 --verbose
and got:
running build
running build_py
running build_ext
building 'cobs._cobsext' extension
error: Unable to find vcvarsall.bat
If I run
Craig McQueen pyt...@craig.mcqueen.id.au added the comment:
And, I should add, doing nearly the same thing, except with Python 2.6.4, works
fine. Same machine, same console window, same path:
\python26\python.exe setup.py build --compiler=mingw32 --verbose
running build
running build_py
Craig McQueen pyt...@craig.mcqueen.id.au added the comment:
Not so much of a traceback. But essentially the same final error:
running build
running build_py
running build_ext
building 'cobs._cobsext' extension
error: Unable to find vcvarsall.bat
Craig McQueen pyt...@craig.mcqueen.id.au added the comment:
This still seems to be a bug in Python 3.1.1, does it not? Can this be
re-opened?
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Craig McQueen pyt...@craig.mcqueen.id.au added the comment:
There's also this one which caught me out:
def outer():
x = 0
y = (x for i in range(10))
del x # SyntaxError
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Craig McQueen pyt...@craig.mcqueen.id.au added the comment:
Thanks, good points. I'm thinking with a C background and the fixed-width data
types. The 0xFF could be needed if the data_byte is actually a larger number
and you need to ensure only the lowest 8 bits are set. Or, if there is some
Craig McQueen pyt...@craig.mcqueen.id.au added the comment:
To complete that thought...
Since crc 8 could bump the calculation into long territory, for that final
mask I guess I'd want to mask and then shift. I.e. rather than
crc_mask = ((1 crc_width) - 1)
crc = (...) ^ ((crc 8
Craig McQueen pyt...@craig.mcqueen.id.au added the comment:
Just for the record... here is a relevant use case...
I'm working on some code for calculating CRCs, and hope to support any CRC
width, including CRC-5. This involves, among the calculations:
crc (crc_width - 8)
The complete
Craig McQueen pyt...@craig.mcqueen.id.au added the comment:
Eric sent a build_ext.py to me and Daniel26 by e-mail. Attached. The idea was
to copy it over the one in C:\Python31\Lib\distutils\command.
I tried the file that he sent, but I'm getting the same issue that Daniel26
described
Craig McQueen pyt...@craig.mcqueen.id.au added the comment:
Eric (keldonin), please consider attaching the file (solution you
mentioned) to this issue for the benefit of the rest of us. I'm
interested to see it.
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Craig McQueen ces-...@mcqueen.id.au added the comment:
This seems to be an bug in Python 3.1.1. Is it fixed in the Python 3
code? Is the issue being tracked in a separate issue?
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Craig McQueen ces-...@mcqueen.id.au added the comment:
I think I see now--it accepts Unicode input, but converts it back to
bytes internally using the ASCII codec. So it works as long as the
Unicode input contains on ASCII characters. That's a gotcha.
It appears that it's been fixed in Python 3
Craig McQueen ces-...@mcqueen.id.au added the comment:
@gregory.p.smith:
This change is not suitable for back porting as it arguably adds a new
feature.
Speaking as a Mercurial user who can't use Mercurial at work through a
proxy firewall... I beg you to consider that fixing
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