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  1. 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 …

  2. What does -> mean in Python function definitions? - Stack Overflow

    Jan 17, 2013 · In Python 3.5 though, PEP 484 -- Type Hints attaches a single meaning to this: -> is used to indicate the type that the function returns. It also seems like this will be enforced in …

  3. syntax - Python integer incrementing with ++ - Stack Overflow

    In Python, you deal with data in an abstract way and seldom increment through indices and such. The closest-in-spirit thing to ++ is the next method of iterators.

  4. 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. …

  5. python - What does the 'b' character do in front of a string literal ...

    I don't think this applies to Python. I did find this documentation on the Python site about using a u character in the same syntax to specify a string as Unicode. Unfortunately, it doesn't mention …

  6. 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 …

  7. 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 …

  8. 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 …

  9. python - How to get the ASCII value of a character - Stack Overflow

    Oct 22, 2008 · for code in map(ord, mystr): you convert to Python native types that iterate the codes directly. On Python 3, it's trivial: for code in mystr.encode('ascii'): and on Python 2.6/2.7, …

  10. 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 …