Develop Reference

PyInstaller executable with panda3d throws exception

I am having an issue with a program, which uses panda3d. It works perfectly when executed as a pythonscript, but the version, which is compiled (or rather packaged) by PyInstaller throws the exception below.
:display(warning): Unable to load libpandagl.so: No error.
Known pipe types:
(all display modules loaded.)
Traceback (most recent call last):
File "Shipsim3d_1-1.py", line 930, in <module>
File "Shipsim3d_1-1.py", line 23, in __init__
File "direct/showbase/ShowBase.py", line 339, in __init__
File "direct/showbase/ShowBase.py", line 1024, in openDefaultWindow
File "direct/showbase/ShowBase.py", line 1059, in openMainWindow
File "direct/showbase/ShowBase.py", line 769, in openWindow
File "direct/showbase/ShowBase.py", line 749, in <lambda>
File "direct/showbase/ShowBase.py", line 821, in _doOpenWindow
File "direct/showbase/ShowBase.py", line 650, in makeDefaultPipe
File "direct/directnotify/Notifier.py", line 130, in error
Exception: No graphics pipe is available!
Your Config.prc file must name at least one valid panda display
library via load-display or aux-display.
[5466] Failed to execute script 'Shipsim3d_1-1' due to unhandled exception!
The .prc file doesn't exist in the executable, but even if I copy it there manually, it still doesn't work. In my Code, I use a function called loadPrcData. Is that a Part of the problem? Or is it something else?
Thanks in advance

Why when installing any package through pip3, the configparser.InterpolationSyntaxError error occurs?

When I install any package through pip3 for python 3.7.4 an error occurs in the form:
Exception:
Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pip/_internal/cli/base_command.py", line 179, in main
status = self.run(options, args)
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pip/_internal/commands/install.py", line 393, in run
use_user_site=options.use_user_site,
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pip/_internal/req/__init__.py", line 57, in install_given_reqs
**kwargs
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pip/_internal/req/req_install.py", line 913, in install
use_user_site=use_user_site, pycompile=pycompile,
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pip/_internal/req/req_install.py", line 445, in move_wheel_files
warn_script_location=warn_script_location,
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pip/_internal/wheel.py", line 320, in move_wheel_files
prefix=prefix,
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pip/_internal/locations.py", line 166, in distutils_scheme
d.parse_config_files()
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/distutils/dist.py", line 413, in parse_config_files
val = parser.get(section,opt)
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/configparser.py", line 799, in get
d)
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/configparser.py", line 394, in before_get
self._interpolate_some(parser, option, L, value, section, defaults, 1)
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/configparser.py", line 444, in _interpolate_some
"found: %r" % (rest,))
configparser.InterpolationSyntaxError: '%' must be followed by '%' or '(', found: '%Y-%m-%d %H:%M:%S'
I didn’t have this before. This problem has appeared recently. The problem occurs on OS X Mojave version 10.14.6

Check your current working directory for a setup.cfg file with unsupported syntax in it.
This is open issue #5182 CLI parses unrelated config files and then crashes, created by me in April 2018.
As a workaround until the issue is fixed, you can cd into a different directory and try installing again.

Cannot uninstall pycrypto: cannot find pycrypto-2.6-py2.7-win32.egg

I was installing pycrypto, and was careless and installed the win32 version instead. Unfortunately, when I go to uninstall it, it cannot find the file specified (full error below). Thanks for any help.
Uninstalling pycrypto-2.6:
c:\python27\lib\site-packages\pycrypto-2.6-py2.7-win32.egg
Proceed (y/n)? y
Successfully uninstalled pycrypto-2.6
Traceback (most recent call last):
File "c:\python27\lib\runpy.py", line 174, in _run_module_as_main
"__main__", fname, loader, pkg_name)
File "c:\python27\lib\runpy.py", line 72, in _run_code
exec code in run_globals
File "C:\Python27\Scripts\pip.exe\__main__.py", line 9, in <module>
File "c:\python27\lib\site-packages\pip\__init__.py", line 233, in main
return command.main(cmd_args)
File "c:\python27\lib\site-packages\pip\basecommand.py", line 252, in main
pip_version_check(session)
File "c:\python27\lib\site-packages\pip\utils\outdated.py", line 102, in
pip_version_check
installed_version = get_installed_version("pip")
File "c:\python27\lib\site-packages\pip\utils\__init__.py", line 838, in
get_installed_version
working_set = pkg_resources.WorkingSet()
File "c:\python27\lib\site-packages\pip\_vendor\pkg_resources\__init__.py",
line 644, in __init__
self.add_entry(entry)
File "c:\python27\lib\site-packages\pip\_vendor\pkg_resources\__init__.py",
line 700, in add_entry
for dist in find_distributions(entry, True):
File "c:\python27\lib\site-packages\pip\_vendor\pkg_resources\__init__.py",
line 1949, in find_eggs_in_zip
if metadata.has_metadata('PKG-INFO'):
File "c:\python27\lib\site-packages\pip\_vendor\pkg_resources\__init__.py",
line 1463, in has_metadata
return self.egg_info and self._has(self._fn(self.egg_info, name))
File "c:\python27\lib\site-packages\pip\_vendor\pkg_resources\__init__.py",
line 1823, in _has
return zip_path in self.zipinfo or zip_path in self._index()
File "c:\python27\lib\site-packages\pip\_vendor\pkg_resources\__init__.py",
line 1703, in zipinfo
return self._zip_manifests.load(self.loader.archive)
File "c:\python27\lib\site-packages\pip\_vendor\pkg_resources\__init__.py",
line 1643, in load
mtime = os.stat(path).st_mtime
WindowsError: [Error 2] The system cannot find the file specified:
'c:\\python27\\lib\\site-packages\\pycrypto-2.6-py2.7-win32.egg'

The key parts of the output are:
Uninstalling pycrypto-2.6:
c:\python27\lib\site-packages\pycrypto-2.6-py2.7-win32.egg
Proceed (y/n)? y
Usually, there's a long list of files here. In your case, it's only an .egg. Which means that you installed the package as a packed .egg (thus most probably, you installed it with easy_install rather than pip: pip always unpacks .eggs).
Now,
WindowsError: [Error 2] The system cannot find the file specified:
'c:\\python27\\lib\\site-packages\\pycrypto-2.6-py2.7-win32.egg'
Means that the .egg was already deleted (probably you deleted it by hand, or a previous uninstallation process was interrupted), but installation metadata wasn't. IIRC it's kept in a file or directory named something like pycrypto-2.6-py2.7-win32.egg-info.
So, locate it in site-packages and delete it.

PRAW induced SSL error when compiling Python script using py2exe

Python 2.7.11
Requests 2.9.1
Praw 3.4.0
I have a python script that uses PRAW (reddit API wrapper), I'm attempting to compile it into an .exe using py2exe.
Here is the current error that occurs when the .exe is run:
Traceback (most recent call last):
File "MYSCRIPTNAME.py", line 263, in <module>
File "<decorator-gen-51>", line 2, in login
File "praw\decorators.pyc", line 78, in wrap
File "praw\__init__.pyc", line 1455, in login
File "<decorator-gen-8>", line 2, in request_json
File "praw\decorators.pyc", line 116, in raise_api_exceptions
File "praw\__init__.pyc", line 620, in request_json
File "praw\__init__.pyc", line 451, in _request
File "praw\__init__.pyc", line 432, in handle_redirect
File "praw\handlers.pyc", line 146, in wrapped
File "praw\handlers.pyc", line 56, in wrapped
File "praw\handlers.pyc", line 102, in request
File "requests\sessions.pyc", line 576, in send
File "requests\adapters.pyc", line 447, in send
requests.exceptions.SSLError: [Errno 2] No such file or directory
Line 263 is r.login(user,pw) (r is r = praw.Reddit(userAgent))
Searching for other SSL issues on here and other places discussed adding cacert.pem. I tried this without resolution.

BeautifulSoup4 in Sagemath

I'm trying to perform web scraping with BS4 and then do some algebra work with the results in Sage 6.2 (in Lion 10.7.5). I assumed that /Applications/Sage-6.2.app/Contents/Resources/sage/sage -i beautifulsoup4 would work, but the result is
Attempting to download package beautifulsoup4
>>> Checking online list of optional packages.
[Traceback (most recent call last):
File "<stdin>", line 35, in <module>
File "/Applications/Sage-6.2.app/Contents/Resources/sage/local/lib/python/urllib.py", line 240, in retrieve
fp = self.open(url, data)
File "/Applications/Sage-6.2.app/Contents/Resources/sage/local/lib/python/urllib.py", line 208, in open
return getattr(self, name)(url)
File "/Applications/Sage-6.2.app/Contents/Resources/sage/local/lib/python/urllib.py", line 359, in open_http
return self.http_error(url, fp, errcode, errmsg, headers)
File "/Applications/Sage-6.2.app/Contents/Resources/sage/local/lib/python/urllib.py", line 376, in http_error
return self.http_error_default(url, fp, errcode, errmsg, headers)
File "<stdin>", line 17, in http_error_default
IOError: [Errno 404] Not Found: '//www.sagemath.org/spkg/optional/list'
Error: failed to download http://www.sagemath.org/spkg/optional/list, aborting
Next, I tried /Applications/Sage-6.2.app/Contents/Resources/sage/sage -sh <<< "easy_install --verbose pip" to get bs4 via pip. That succeeded; however /Applications/Sage-6.2.app/Contents/Resources/sage/local/bin/pip2.7 install beautifulsoup4 failed with error message
Traceback (most recent call last):
File "/Applications/Sage-6.2.app/Contents/Resources/sage/local/lib/python2.7/site.py", line 548, in <module>
main()
File "/Applications/Sage-6.2.app/Contents/Resources/sage/local/lib/python2.7/site.py", line 530, in main
known_paths = addusersitepackages(known_paths)
File "/Applications/Sage-6.2.app/Contents/Resources/sage/local/lib/python2.7/site.py", line 266, in addusersitepackages
user_site = getusersitepackages()
File "/Applications/Sage-6.2.app/Contents/Resources/sage/local/lib/python2.7/site.py", line 241, in getusersitepackages
user_base = getuserbase() # this will also set USER_BASE
File "/Applications/Sage-6.2.app/Contents/Resources/sage/local/lib/python2.7/site.py", line 231, in getuserbase
USER_BASE = get_config_var('userbase')
File "/Applications/Sage-6.2.app/Contents/Resources/sage/local/lib/python2.7/sysconfig.py", line 516, in get_config_var
return get_config_vars().get(name)
File "/Applications/Sage-6.2.app/Contents/Resources/sage/local/lib/python2.7/sysconfig.py", line 449, in get_config_vars
import re
File "/Applications/Sage-6.2.app/Contents/Resources/sage/local/lib/python2.7/re.py", line 105, in <module>
import sre_compile
File "/Applications/Sage-6.2.app/Contents/Resources/sage/local/lib/python2.7/sre_compile.py", line 14, in <module>
import sre_parse
File "/Applications/Sage-6.2.app/Contents/Resources/sage/local/lib/python2.7/sre_parse.py", line 17, in <module>
from sre_constants import *
File "/Applications/Sage-6.2.app/Contents/Resources/sage/local/lib/python2.7/sre_constants.py", line 18, in <module>
from _sre import MAXREPEAT
ImportError: cannot import name MAXREPEAT
Next, I tried upgrading to Sage 6.6. That went smoothly, as did the installation of bs4. However, when I opened the notebook, I was unable to run code cells, because the "Shift-Enter" command only registered as "Enter" and gave me a new line instead of evaluating the code. Additionally, there was no "evaluate" button. Any recommendations to solve any of these issues would be greatly appreciated.

Unfortunately, Sage has changed how it handles optional packages like BS so that older versions may not be able to use them. You can always go to a mirror, though, like http://mirrors.mit.edu/sage/spkg/optional/ download it, and put it in your (old Sage's) optional spkg directory and try doing sage -i path/to/file.
As to the notebook issue, that should be a matter of doing a "hard cache reset" in the browser due to different jQuery versions, see e.g. here.