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- python - Iterating over a dictionary using a for loop, getting keys . . .
In Python 3, the iteration has to be over an explicit copy of the keys (otherwise it throws a RuntimeError) because my_dict keys() returns a view of the dictionary keys, so any change to my_dict changes the view as well
- How can I access environment variables in Python?
How can I get the value of an environment variable in Python?
- How do I declare custom exceptions in modern Python?
By "modern Python" I mean something that will run in Python 2 5 but be 'correct' for the Python 2 6 and Python 3 * way of doing things And by "custom" I mean an Exception object that can include extra data about the cause of the error: a string, maybe also some other arbitrary object relevant to the exception
- python - How do I list all files of a directory? - Stack Overflow
How can I list all files of a directory in Python and add them to a list?
- python - Find the current directory and files directory - Stack Overflow
How do I determine: the current directory (where I was in the shell when I ran the Python script), and where the Python file I am executing is?
- How to create a venv with a different Python version
100 I have different venvs in my machine in which I have Python 3 10 Now for a specific project, I realised that Python 3 10 is not suitable as some libraries are still not compatible Therefore, when creating a new venv for a new project, I would like to downgrade Python, say to 3 8, only for this specific venv How can I do that?
- Python command not working in command prompt [duplicate]
When I type python into the command line, the command prompt says python is not recognized as an internal or external command, operable program, or batch file What should I do? Note: I have Python
- python - Module not found - No module named - Stack Overflow
My issue was that it was installed for Python, but not for Python 3 To check to see if a module is installed for Python 3, run: python3 -m pip uninstall moduleName After doing this, if you find that a module is not installed for one or both versions, use these two commands to install the module pip install moduleName python3 -m pip install
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