This happens because your local module named requests.py shadows the installed requests module you are trying to use. The current directory is prepended to sys.path, so the local name takes precedence over the installed name. An extra debugging tip when this comes up is to look at the Traceback carefully, and realize that the name … Read more
Straight from the python documentation: http://docs.python.org/reference/executionmodel.html By default, when in the __main__ module, __builtins__ is the built-in module __builtin__ (note: no ‘s’); when in any other module, __builtins__ is an alias for the dictionary of the __builtin__ module itself. __builtins__ can be set to a user-created dictionary to create a weak form of restricted execution. … Read more
Imported modules are just variables – names bound to some values. So all you need is to import them and make them global with global keyword. Example: >>> math Traceback (most recent call last): File “<stdin>”, line 1, in <module> NameError: name ‘math’ is not defined >>> def f(): … global math … import math … Read more
Zarkonnen’s response does answer your question, but not directly. Let me try to be more direct, and see if I can grab the bounty from Zarkonnen. You will perhaps find this easier to understand if you stop using the terms “raw string regex” and “raw string patterns”. These terms conflate two separate concepts: the representations … Read more
As PEP 562 has been implemented in Python >= 3.7, now we can do this file: module.py def __getattr__(name): if name == ‘y’: return 3 raise AttributeError(f”module ‘{__name__}’ has no attribute ‘{name}'”) other = 4 demo: >>> import module >>> module.y 3 >>> module.other 4 >>> module.nosuch Traceback (most recent call last): File “<stdin>”, line … Read more
This fixed the problem by having it as the first two lines of the script: !pip install opencv-python !apt update && apt install -y libsm6 libxext6 !apt-get install -y libxrender-dev
In my case, it is permission problem. The package was somehow installed with root rw permission only, other user just cannot rw to it!
A module is a file containing Python definitions and statements. The file name is the module name with the suffix .py create hello.py then write the following function as its content: def helloworld(): print “hello” Then you can import hello: >>> import hello >>> hello.helloworld() ‘hello’ >>> To group many .py files put them in … Read more
The officially recommended way to install packages from a script is by calling pip’s command-line interface via a subprocess. Most other answers presented here are not supported by pip. Furthermore since pip v10, all code has been moved to pip._internal precisely in order to make it clear to users that programmatic use of pip is … Read more
You would probably also want this: import sys print(sys.path) Or as a one liner from the terminal: python -c “import sys; print(‘\n’.join(sys.path))” Caveat: If you have multiple versions of Python installed you should use a corresponding command python2 or python3.