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  1. What does the "at" (@) symbol do in Python? - Stack Overflow

    An @ symbol at the beginning of a line is used for class and function decorators: PEP 318: Decorators Python Decorators - Python Wiki The most common Python decorators are: @property …

  2. 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 to indicate …

  3. 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. and on Google …

  4. python - `from ... import` vs `import .` - Stack Overflow

    Feb 25, 2012 · I'm wondering if there's any difference between the code fragment from urllib import request and the fragment import urllib.request or if they are interchangeable. If they are …

  5. python - Iterating over a dictionary using a 'for' loop, getting keys ...

    Mar 16, 2017 · 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 …

  6. python - SSL: CERTIFICATE_VERIFY_FAILED with Python3 - Stack Overflow

    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 Certificates.command'.

  7. python - How to concatenate (join) items in a list to a single string ...

    Sep 17, 2012 · For handling a few strings in separate variables, see How do I append one string to another in Python?. For the opposite process - creating a list from a string - see How do I split a …

  8. python - How do I list all files of a directory? - Stack Overflow

    Jul 9, 2010 · How can I list all files of a directory in Python and add them to a list?

  9. python - Find a value in a list - Stack Overflow

    In Python 3, filter doesn't return a list, but a generator-like object. Finding the first occurrence If you only want the first thing that matches a condition (but you don't know what it is yet), it's fine to use a for …

  10. python - Find the current directory and file's 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?