Re: Relative import cannot find .so submodule?

[Barry]

> On 12 Jan 2020, at 05:27, Patrick Stinson  wrote:
> 
> I have a module named rtmidi, and its C submodule named rtmidi/_rtmidi. The 
> distills script builds successfully and successfully creates a build/lib dir 
> with a rtmidi dir in it and the submodule file 
> rtmidi/_rtmidi.cpython-36dm-darwin.so. I have set PYTHONPATH to this lib dir, 
> but rtmidi/__init__.py gives the following error:
> 
> Traceback (most recent call last):
>  File "main.py", line 6, in 
>from pkmidicron import MainWindow, util, ports
>  File "/Users/patrick/dev/pkmidicron/pkmidicron/__init__.py", line 1, in 
> 
>from .mainwindow import *
>  File "/Users/patrick/dev/pkmidicron/pkmidicron/mainwindow.py", line 2, in 
> 
>import rtmidi
>  File "/Users/patrick/dev/pkmidicron/pyrtmidi/build/lib/rtmidi/__init__.py", 
> line 1, in 
>from ._rtmidi import *
> ModuleNotFoundError: No module named 'rtmidi._rtmidi’
> 
> How does the module finder work in the import system? I assume ti 
> automatically resolves the name _rtmidi.cpython-36dm-darwin.so to _rtmidi? I 
> didn’t have any luck reading the docs on the import system.

Use python -vv then import you module. Python will print debug messages showing 
where it looks for the modules. Usually that helps find the problem with the 
PYTHONPATH.

Barry

> 
> Thanks!
> -Patrick
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Complaints on installing packages

[ofomi matthew]

Good day Python Team,
I'm Matt by name and I have been having difficulties in installing packages
on my pycharm.it keeps telling me "error installing package". Please how do
I rectify this issues step by step.
Looking forward to get a response as soon as possible. Thank you
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Re: How to get dynamic data in html (javascript?)

[Chris Angelico]

On Sun, Jan 12, 2020 at 4:41 AM Friedrich Rentsch
 wrote:
>
> Hi all,
>
> I'm pretty good at hacking html text. But I have no clue how to get
> dynamic data like this : "At close: {date} {time}". I would appreciate a
> starting push to narrow my focus, currently awfully unfocused. Thanks.
>
> Frederic
>

You're asking this on a Python mailing list. Are you using Flask?
Django? AIOHTTP? Do you have a templating engine like Jinja?

ChrisA
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Problem with pip

[Helal Uddin]

When I first installed python, I didn’t have Pip.  But when I installed python 
a few days ago, it’s showing this problem.

Sent from Mail for Windows 10

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Help

[kiran chawan]

Whenever Iam trying to run this 'New  latest version python software 3.8.4
python ' but it doesn't show any install option tell me how  to run this
software and install new latest version of python plz reply sir thank you
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i am using python

[muazzam shaikh]

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error

[Barış AVCI]

Kivy does not support python3.8

Saygılarımla,

Barış AVCI
Bakım Sorumlusu
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İstanbul Anadolu Yakası Org. San. Böl.
2.Sanayi Cad.No:1 Tepeören-Tuzla İSTANBUL
TÜRKİYE-34953
Tel  : +90(216) 593 00 40
Fax : +90(216) 593 00 39

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Re: Relative import cannot find .so submodule?

[dieter]

Patrick Stinson  writes:
> I have a module named rtmidi, and its C submodule named rtmidi/_rtmidi. The 
> distills script builds successfully and successfully creates a build/lib dir 
> with a rtmidi dir in it and the submodule file 
> rtmidi/_rtmidi.cpython-36dm-darwin.so. I have set PYTHONPATH to this lib dir, 
> but rtmidi/__init__.py gives the following error:
>
> Traceback (most recent call last):
>   File "main.py", line 6, in 
> from pkmidicron import MainWindow, util, ports
>   File "/Users/patrick/dev/pkmidicron/pkmidicron/__init__.py", line 1, in 
> 
> from .mainwindow import *
>   File "/Users/patrick/dev/pkmidicron/pkmidicron/mainwindow.py", line 2, in 
> 
> import rtmidi
>   File "/Users/patrick/dev/pkmidicron/pyrtmidi/build/lib/rtmidi/__init__.py", 
> line 1, in 
> from ._rtmidi import *
> ModuleNotFoundError: No module named 'rtmidi._rtmidi’
>
> How does the module finder work in the import system? I assume ti 
> automatically resolves the name _rtmidi.cpython-36dm-darwin.so to _rtmidi? I 
> didn’t have any luck reading the docs on the import system.

I think the extension module should be found.

However, an extension module must satify further conditions
(apart from being found), e.g. it must contain a public initialization
function with a name derived from the module name (and dependent
on the major Python version). Maybe, your so does not fulfill one of
those conditions?

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to solve the issues

[Gautami Gaikwad]

please solve the issues and make me essential use of this software.
thank you.
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Problems with Python install on Windows 10

[Mike Weaver]

Hello

I am having great problems installing Python 3.8.1 on my Windows 10 64 bit
system. I have tried using chocolatey as referenced at
https://docs.python-guide.org/starting/install3/win/#install3-windows - it
says it is installed but it isn't!

I've tried downloading from https://www.python.org/downloads/windows/
(the Windows
x86-64 executable installer
) and
running that. Again says it is installed - but it clearly isn't.

If I open a command prompt and type 'python', I get

TCC: (Sys) The file cannot be accessed by the system
"C:\Users\Mike\AppData\Local\Microsoft\WindowsApps\python.exe"

If I search in that directory, I find a  to python.exe. I have
added that directory to my Path. I can see Python 3.8.1 in the Control
Panel. I've rebooted. Reinstalled. Tried just about everything - but cannot
get past either the crazy Microsoft Store app request or 'the file cannot
be accessed' message. HELP!!

Any advice is REALLY welcome! Thanks

Mike
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Re: to solve the issues

[Igor Korot]

Hi,

On Mon, Jan 13, 2020 at 8:29 AM Gautami Gaikwad
 wrote:
>
> please solve the issues and make me essential use of this software.
> thank you.

Errr, what kid of issue?
Can you be a little more specific?

Thank you.

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Re: Relative import cannot find .so submodule?

[Pieter van Oostrum]

Patrick Stinson  writes:

> I have a module named rtmidi, and its C submodule named rtmidi/_rtmidi. The 
> distills script builds successfully and successfully creates a build/lib dir 
> with a rtmidi dir in it and the submodule file 
> rtmidi/_rtmidi.cpython-36dm-darwin.so. I have set PYTHONPATH to this lib dir, 
> but rtmidi/__init__.py gives the following error:
>
> Traceback (most recent call last):
>   File "main.py", line 6, in 
> from pkmidicron import MainWindow, util, ports
>   File "/Users/patrick/dev/pkmidicron/pkmidicron/__init__.py", line 1, in 
> 
> from .mainwindow import *
>   File "/Users/patrick/dev/pkmidicron/pkmidicron/mainwindow.py", line 2, in 
> 
> import rtmidi
>   File "/Users/patrick/dev/pkmidicron/pyrtmidi/build/lib/rtmidi/__init__.py", 
> line 1, in 
> from ._rtmidi import *
> ModuleNotFoundError: No module named 'rtmidi._rtmidi’
>
> How does the module finder work in the import system? I assume ti 
> automatically resolves the name _rtmidi.cpython-36dm-darwin.so to _rtmidi? I 
> didn’t have any luck reading the docs on the import system.

Are you running python 3.6?

I tried this on python 3.7 and it worked, but the file is called 
_rtmidi.cpython-37m-darwin.so there (37 for python3.7, and the d is missing, I 
don't know what that indicates).
-- 
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www: http://pieter.vanoostrum.org/
PGP key: [8DAE142BE17999C4]
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Re: Relative import cannot find .so submodule?

[Paul Moore]

Did you build the extension as a debug build, but you're trying to use
it in a release build Python? That may not work (it may depend on the
OS, I don't know the compatibility details on MacOS)...

On Mon, 13 Jan 2020 at 16:02, Pieter van Oostrum
 wrote:
>
> Patrick Stinson  writes:
>
> > I have a module named rtmidi, and its C submodule named rtmidi/_rtmidi. The 
> > distills script builds successfully and successfully creates a build/lib 
> > dir with a rtmidi dir in it and the submodule file 
> > rtmidi/_rtmidi.cpython-36dm-darwin.so. I have set PYTHONPATH to this lib 
> > dir, but rtmidi/__init__.py gives the following error:
> >
> > Traceback (most recent call last):
> >   File "main.py", line 6, in 
> > from pkmidicron import MainWindow, util, ports
> >   File "/Users/patrick/dev/pkmidicron/pkmidicron/__init__.py", line 1, in 
> > 
> > from .mainwindow import *
> >   File "/Users/patrick/dev/pkmidicron/pkmidicron/mainwindow.py", line 2, in 
> > 
> > import rtmidi
> >   File 
> > "/Users/patrick/dev/pkmidicron/pyrtmidi/build/lib/rtmidi/__init__.py", line 
> > 1, in 
> > from ._rtmidi import *
> > ModuleNotFoundError: No module named 'rtmidi._rtmidi’
> >
> > How does the module finder work in the import system? I assume ti 
> > automatically resolves the name _rtmidi.cpython-36dm-darwin.so to _rtmidi? 
> > I didn’t have any luck reading the docs on the import system.
>
> Are you running python 3.6?
>
> I tried this on python 3.7 and it worked, but the file is called 
> _rtmidi.cpython-37m-darwin.so there (37 for python3.7, and the d is missing, 
> I don't know what that indicates).
> --
> Pieter van Oostrum
> www: http://pieter.vanoostrum.org/
> PGP key: [8DAE142BE17999C4]
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Re: Problems with Python install on Windows 10

[Eryk Sun]

On 1/13/20, Mike Weaver  wrote:
>
> I've tried downloading from https://www.python.org/downloads/windows/
> (the Windows x86-64 executable installer
> )
> and running that. Again says it is installed - but it clearly isn't.

Maybe you didn't enable the option to add the installation directory
to PATH. Modifying the system and per-user PATH value is easy enough
-- especially in Windows 10, which provides an exploded view of the
semicolon-delimited list of directories, with individual entries that
you can edit or move up and down in the list.

> If I open a command prompt and type 'python', I get
>
> TCC: (Sys) The file cannot be accessed by the system
> "C:\Users\Mike\AppData\Local\Microsoft\WindowsApps\python.exe"
>
> If I search in that directory, I find a  to python.exe. I have

That's the app-exec link for the store version of Python, which, if
it's not installed, actually targets a stub app that opens the
Microsoft Store to install Python. The directory of the standard
installation needs to precede "%LocalAppData%\Microsoft\WindowsApps"
in PATH in order to avoid this app-exec link. The default installation
directory for x64 3.8 would be "%ProgramFiles%\Python38" for a system
install and "%LocalAppData%\Programs\Python\Python38" for a per-user
install.

Note that an app-exec link is a type of filesystem reparse point, like
a symlink or mount point in that narrow aspect, but it is most
definitely not a symlink. Your shell is wrong to report that it's a
"". There's no kernel handler for this type of reparse point,
so any attempt to open it normally, with reparsing enabled, will fail
as an unhandled reparse point. As far as I know, no Cygwin-derived
environment (e.g. MSYS2) has been updated to support app-exec links.
The onus is on these frameworks to stay up to date with significant
changes in Windows.

CreateProcess handles app-exec links in user mode. It directly opens
the reparse point to read the target executable path. It also reads a
set of security attributes, which it adds to a custom access token for
the child process (i.e it's like a CreateProcessAsUser call). The
security attributes in the access token allow the child process to
access the app's files in "%ProgramFiles%WindowsApps\",
which are protected by a conditional access-control entry.
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Re: Complaints on installing packages

[Peter Pearson]

On Sun, 12 Jan 2020 15:21:52 +0100, ofomi matthew wrote:
> Good day Python Team,
> I'm Matt by name and I have been having difficulties in installing packages
> on my pycharm.it keeps telling me "error installing package". Please how do
> I rectify this issues step by step.
> Looking forward to get a response as soon as possible. Thank you

Welcome, Matt.

Your chances of getting an answer to your question would be much
improved if you included more information.  What is the package
that is being installed?  What command did you issue?  Was there
any additional information besides "error installing package"?

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Re: Help

[Peter Pearson]

On Sun, 12 Jan 2020 22:23:58 +0530, kiran chawan  wrote:
> Whenever Iam trying to run this 'New  latest version python software 3.8.4
> python ' but it doesn't show any install option tell me how  to run this
> software and install new latest version of python plz reply sir thank you

To get a useful answer, you'll need to provide more information.
What operating system are you running?  
Is there already some kind of Python environment on your machine?
Have you downloaded some specific Python file that you're trying to
run?  Where did you get it?

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Re: Problem with pip

[Terry Reedy]

On 1/13/2020 12:00 AM, Helal Uddin wrote:

When I first installed python, I didn’t have Pip.


In Command Prompt, run
> python  -m ensurepip


 But when I installed python a few days ago, it’s showing this problem.


What problem?

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Re: error

[Terry Reedy]

On 1/13/2020 12:52 AM, Barış AVCI wrote:

Kivy does not support python3.8


Some packages take months to officially support new python versions. 
Posting here does no good.


However,
https://www.lfd.uci.edu/~gohlke/pythonlibs/
compiles wheels for Windows for 100s of packages for new python versions 
starting with the beta releases.  It has them for kivy for 3.8.


--
Terry Jan Reedy


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Damping cofficient from envelope

[Shiba Subedi]

Dear all,

I'm new for python. I'm trying to compute damping coefficient ( for the 
waveform trace data)  but I didn't get how can I do. I can plot the envelope 
but my interest is to find out the damping coefficient of the trace. How is it 
possible?
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Re: Damping cofficient from envelope

[Rob Gaddi]

On 1/13/20 9:45 AM, Shiba Subedi wrote:

Dear all,

I'm new for python. I'm trying to compute damping coefficient ( for the 
waveform trace data)  but I didn't get how can I do. I can plot the envelope 
but my interest is to find out the damping coefficient of the trace. How is it 
possible?



If you've already got a method of calculating the envelope then what you want is 
to minimize the error between that calculated envelope and that of your damping 
function, which I'll assume is in the form a * exp(-bt).


Write a function estimated_envelope(t, a, b) that does that math, and use 
scipy.optimize.curve_fit to dial in (a,b) against your measured data.  This 
error function doesn't have a lot of exciting topography, so your initial 
guesses p0 can be pretty far off and you'll still converge.

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Re: Saying bye bye to Python 2

[Grant Edwards]

On 2020-01-11, Gunnar Þór Magnússon  wrote:

>> I thought that upgrading is not that simple.

> If you have Python 2 code that deals with a lot of text in byte
> form, and it's kind of vague where you convert from bytes to
> strings, you may have a bad time.
>
> Otherwise, it may not be that bad. I ported around 500k lines of
> Python 2 to 3 this year, and it went smoothly.

That's been my experience: unless you use raw bytes a lot, I find that
porting apps from 2 to 3 isn't difficult at all.  You sometimes have
to tweak text I/O stuff a little to fix encoding issues.

Porting apps that use bytes is more work, but if you're abandoning 2.x
support, usually not too bad.

The real headache is trying to keep a "byte-centric" application
backwards compatible so that it will run under 2.x or 3.x.  I used to
try to keep things backwards compatible, but have recently started to
abandon 2.x support in my (mostly internal) apps.

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  at   sardine!!
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Re: How to get dynamic data in html (javascript?)

[Friedrich Rentsch]

On 1/11/20 2:39 PM, Friedrich Rentsch wrote:

Hi all,

I'm pretty good at hacking html text. But I have no clue how to get 
dynamic data like this : "At close: {date} {time}". I would appreciate 
a starting push to narrow my focus, currently awfully unfocused. Thanks.


Frederic

Thanks for bothering. I'm sorry for having been too terse. The snippet 
was from an html download (wget 
https://finance.yahoo.com/quote/HYT/history?p=HYT). Here's a little more 
of it:  ".  .  .  ED_SHORT":"At close: {date} 
{time}","MARKET_TIME_NOTICE_CLOSED":"As of {date} {time}. 
{marketState}","MARKE . . .". I suppose the browser gets the values 
whose names appear in braces, dialoguing with the server. I believe it 
is javascript. I see sections marked  . . . section here . . . 
. If it is javascript, the question would be how to run 
javascript in python, unless it runs on the server by requests sent by 
python from my end.


Frederic


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