
python - Why do some functions have underscores - Stack Overflow
May 24, 2024 · In Python, the use of an underscore in a function name indicates that the function is intended for internal use and should not be called directly by users. It is a convention used …
What does [:-1] mean/do in python? - Stack Overflow
Mar 20, 2013 · Working on a python assignment and was curious as to what [:-1] means in the context of the following code: instructions = f.readline()[:-1] Have searched on here on S.O. …
How can I check my python version in cmd? - Stack Overflow
Jun 15, 2021 · I has downloaded python in python.org, and I wanted to check my python version, so I wrote python --version in cmd, but it said just Python, without version. Is there any other …
python - SSL: CERTIFICATE_VERIFY_FAILED with Python3 - Stack …
Sep 2, 2017 · Go to the folder where Python is installed, e.g., in my case (Mac OS) it is installed in the Applications folder with the folder name 'Python 3.6'. Now double click on 'Install …
python - Iterating over dictionaries using 'for' loops - Stack Overflow
Jul 21, 2010 · Why is it 'better' to use my_dict.keys() over iterating directly over the dictionary? Iteration over a dictionary is clearly documented as yielding keys. It appears you had Python 2 …
python - How do I execute a program or call a system command?
How do I call an external command within Python as if I had typed it in a shell or command prompt?
How to list all installed packages and their versions in Python?
Is there a way in Python to list all installed packages and their versions? I know I can go inside python/Lib/site-packages and see what files and directories exist, but I find this very awkward. ...
python - How can I add new keys to a dictionary? - Stack Overflow
6 I think it would also be useful to point out Python's collections module that consists of many useful dictionary subclasses and wrappers that simplify the addition and modification of data …
python - How can I install cv2? - Stack Overflow
Sep 11, 2019 · If you are only working with images pip install opencv-python opencv-python If you need support for working videos: pip install opencv-contrib-python opencv-contrib-python If …
python - Find the current directory and file's directory - Stack …
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?