Re: [Tutor] How to use "curses.resizeterm(nlines, ncols)"
On 23Feb2019 23:00, boB Stepp wrote: I am trying to understand the functionality that the Python module, curses, provides. But I am stuck on how to use the command, curses.resizeterm(nlines, ncols). At https://docs.python.org/3/library/curses.html#curses.resizeterm it says: curses.resizeterm(nlines, ncols)¶ Resize the standard and current windows to the specified dimensions, and adjusts other bookkeeping data used by the curses library that record the window dimensions (in particular the SIGWINCH handler). After much experimentation -- to no good effect -- I have concluded that "resizeterm" does *not* mean resize the terminal window that the curses program is running within. Can someone give me a working example of how to use this command? I think you might misunderstand the purpose of the function; I have to say the doco doesn't help you much here. It looks like the resizeterm() function updates the curses _internal_ records of what it believes the physcial terminal size to be. When you physically resize a terminal the processes within it receive a SIGWINCH signal, and those which pay attention to that signal should then consult the terminal to find out its new size. The curses library notices this signal, and calls resizeterm() to update its own internal idea of the terminal size so that it knows how to draw correctly on the screen. It does _not_ change the terminal; it changes curses' beliefs _about_ the terminal. If you call resizeterm() yourself you will cause curses to act from then on as though the physcial terminal has the size you supplied. That may make for bad rendering if that size does not match reality (consider cursor motions "from the right edge" or "from the bottom edge" - their sizes are computed from where curses thinks those edges are). Test the function curses.is_term_resized(nlines,ncols), whose doco says: Return True if resize_term() would modify the window structure, False otherwise. The is_term_resized() function looks up the current physical size and reports False if that matches curses current beliefs, and True if it does not match, meaning that the physical size has changed since curses last set up its beliefs (for example, in some environment where the resize _doesn't_ propagate a SIGWINCH to the process using curses, so it hasn't noticed). Does this clarify things for you? Cheers, Cameron Simpson ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
[Tutor] How to use "curses.resizeterm(nlines, ncols)"
I am trying to understand the functionality that the Python module, curses, provides. But I am stuck on how to use the command, curses.resizeterm(nlines, ncols). At https://docs.python.org/3/library/curses.html#curses.resizeterm it says: curses.resizeterm(nlines, ncols)¶ Resize the standard and current windows to the specified dimensions, and adjusts other bookkeeping data used by the curses library that record the window dimensions (in particular the SIGWINCH handler). After much experimentation -- to no good effect -- I have concluded that "resizeterm" does *not* mean resize the terminal window that the curses program is running within. Can someone give me a working example of how to use this command? TIA! -- boB ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Visual studio Code -Python
On 23/02/2019 12:23, Asad wrote: Please don't top post, it is so irritating when trying to read threads, TIA. Hi All , I am using : pdb.set_trace() can you all share some good tricks i using n ,s , l . The tedious part which I see is if it is a loop like for loop then I need to do next till the length for the data is completed for x in string : if re.search(x,line) len(string) = 2500 therefore I need to press n 2500 time so that the loop completes and goes to another line of code . Any suggestions? how can run the for loop without doing n for 2500 times ? Set a breakpoint on the first line after the loop, please see https://code.visualstudio.com/docs/python/debugging#_invoking-a-breakpoint-in-code -- My fellow Pythonistas, ask not what our language can do for you, ask what you can do for our language. Mark Lawrence ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Visual studio Code -Python
Hi All , I am using : pdb.set_trace() can you all share some good tricks i using n ,s , l . The tedious part which I see is if it is a loop like for loop then I need to do next till the length for the data is completed for x in string : if re.search(x,line) len(string) = 2500 therefore I need to press n 2500 time so that the loop completes and goes to another line of code . Any suggestions? how can run the for loop without doing n for 2500 times ? Thanks, On Sun, Feb 17, 2019 at 8:58 PM Mats Wichmann wrote: > On 2/17/19 1:50 AM, Asad wrote: > > Hi All , > > > > I am using Visual Studio Code for Python . However I was > using > > the debug option F5 i see it list the variables in my program neatly ,I > set > > breakpoints it stops there but I am unable to preview each line of the > > execution of the code . > > > > Thanks, > > You'll need to go to the source for that... the Python extension should > have limited instructions, and a bunch of pointers for where to go find > out more, and some animations that intend to show how things work. > > Best of luck! > > > -- Asad Hasan +91 9582111698 ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Visual studio Code -Python
On 2/23/19 5:23 AM, Asad wrote: Hi All , I am using : pdb.set_trace() can you all share some good tricks i using n ,s , l . The tedious part which I see is if it is a loop like for loop then I need to do next till the length for the data is completed for x in string : if re.search(x,line) len(string) = 2500 therefore I need to press n 2500 time so that the loop completes and goes to another line of code . Any suggestions? how can run the for loop without doing n for 2500 times ? pdb has an "until" command you can use to get it to run until the line after the loop, if that's what you are looking for. sorry, it's a little hard to tell what you *are* looking for. ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] import failure
On 22/02/2019 16:55, Alex Kleider wrote:
I'm trying to programmatically manipulate my google contacts using
a library (https://github.com/google/gdata-python-client) which I've
cloned. The documentation suggests running a test to start with
which I did (OS: Ubuntu 18.4, running in a python2.7 venv 'p2')
with the following rather puzzling results (explanation below):
(p2) alex@one:$ pwd
/home/alex/Proj/G/gdata-python-client
(p2) alex@one:$ ls
build INSTALL.txt pydocs samples src
contacts_example.py Makefile README.txt set_python_path.sh
tests
__init__.py MANIFEST.in RELEASE_NOTES.txt setup.py
upload-diffs.py
(p2) alex@one:$ ./tests/run_data_tests.py
Traceback (most recent call last):
File "./tests/run_data_tests.py", line 19, in
import gdata_tests.auth_test
File
"/home/alex/Proj/G/gdata-python-client/tests/gdata_tests/auth_test.py",
line 24, in
import gdata.auth
File "/home/alex/Proj/G/gdata-python-client/src/gdata/auth.py", line
29, in
import gdata.oauth.rsa as oauth_rsa
File "/home/alex/Proj/G/gdata-python-client/src/gdata/oauth/rsa.py",
line 10, in
from tlslite.utils import keyfactory
ImportError: No module named tlslite.utils
(p2) alex@one:$ pip install tlslite
DEPRECATION: Python 2.7 will reach the end of its life on January 1st,
2020. Please upgrade your Python as Python 2.7 won't be maintained after
that date. A future version of pip will drop support for Python 2.7.
Collecting tlslite
Downloading
https://files.pythonhosted.org/packages/92/2b/7904cf913d9bf150b3e408a92c9cb5ce0b97a9ec19f998af48bf4c607f0e/tlslite-0.4.9.tar.gz
(105kB)
100% | | 112kB 174kB/s
100% | | 112kB 174kB/s
Building wheels for collected packages: tlslite
Building wheel for tlslite (setup.py) ... done
Stored in directory:
/home/alex/.cache/pip/wheels/f8/de/72/213ac7112be37bc832e971c092757ae92aa5ae4b433e214ba9
Successfully built tlslite
Installing collected packages: tlslite
Successfully installed tlslite-0.4.9
(p2) alex@one:$ ./tests/run_data_tests.py
Traceback (most recent call last):
File "./tests/run_data_tests.py", line 19, in
import gdata_tests.auth_test
File
"/home/alex/Proj/G/gdata-python-client/tests/gdata_tests/auth_test.py",
line 24, in
import gdata.auth
File "/home/alex/Proj/G/gdata-python-client/src/gdata/auth.py", line
29, in
import gdata.oauth.rsa as oauth_rsa
File "/home/alex/Proj/G/gdata-python-client/src/gdata/oauth/rsa.py",
line 10, in
from tlslite.utils import keyfactory
ImportError: No module named tlslite.utils
(p2) alex@one:$ python
Python 2.7.15rc1 (default, Nov 12 2018, 14:31:15)
[GCC 7.3.0] on linux2
Type "help", "copyright", "credits" or "license" for more information.
import tlslite
exit()
(p2) alex@one:$ vim src/gdata/oauth/rsa.py
(p2) alex@one:$ cat src/gdata/oauth/rsa.py | tail -n 4
if __name__ == "__main__":
print("key_factory = " + repr(keyfactory))
(p2) alex@one:$ python src/gdata/oauth/rsa.py
key_factory = '/home/alex/.virtualenvs/p2/local/lib/python2.7/site-packages/tlslite/utils/keyfactory.pyc'>
(p2) alex@one:$ python
Python 2.7.15rc1 (default, Nov 12 2018, 14:31:15)
[GCC 7.3.0] on linux2
Type "help", "copyright", "credits" or "license" for more information.
from tlslite.utils import keyfactory
Details: The initial run failed because of unavailability of a module.
A little reading led to the discovery that it could be easily installed
using pip but after doing so: Still the same failure.
Running the interpreter proves that the module is now available but the
test still fails.
Adding a bit of code to the bottom of the failing module shows that it
in fact can import the module in question.
Ran the interpreter again just to be sure that the function is available
and indeed it is.
I don't understand how this could be possible.
Any suggestions as to what the problem might be or how to investigate
further would be very much appreciated.
Cheers,
Alex
Just to follow up there are some useful tips in this
https://mail.python.org/pipermail/python-list/2019-February/739643.html
as to how to debug these type of problems.
--
My fellow Pythonistas, ask not what our language can do for you, ask
what you can do for our language.
Mark Lawrence
___
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Re: [Tutor] import failure
On 2019-02-22 09:48, Mats Wichmann wrote: pip installs are specific to the interpreter, you're probably getting a mismatch there. Rule one: install this way: python -m pip install sheepdip that way you're sure the pip matches the python and things go in the expected place. Rule 2: you can do some inspection by printing the values of sys.executable and sys.path both in your interactive environment where it works and in your script where it doesn't work. My guess is you'll find a mismatch... but this is only surmise, something to try out, we can't see your precise environment. Thanks again for the input. As I mentioned in response to Peter's response, a mismatch was definitely the problem. The program I was trying to run had as its first line: #!/usr/bin/python I wrongly reported that the 'shebang' was #!/usr/bin/env python When changed to the latter, the program runs as I expected. Thanks to both of you for your guidance. Alex ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
