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  • What is Pythons equivalent of (logical-and) in an if-statement?
    There is no bitwise negation in Python (just the bitwise inverse operator ~ - but that is not equivalent to not) See also 6 6 Unary arithmetic and bitwise binary operations and 6 7 Binary arithmetic operations The logical operators (like in many other languages) have the advantage that these are short-circuited
  • What does colon equal (:=) in Python mean? - Stack Overflow
    In Python this is simply = To translate this pseudocode into Python you would need to know the data structures being referenced, and a bit more of the algorithm implementation Some notes about psuedocode: := is the assignment operator or = in Python = is the equality operator or == in Python There are certain styles, and your mileage may vary:
  • python - Is there a difference between == and is? - Stack Overflow
    According to the previous answers: It seems python performs caching on small integer and strings which means that it utilizes the same object reference for 'hello' string occurrences in this code snapshot, while it did not preform caching for 'hello sam' as it is relatively larger than 'hello' (i e it manages different references of 'hello sam
  • python - What does the caret (^) operator do? - Stack Overflow
    Side note, seeing as Python defines this as an xor operation and the method name has "xor" in it, I would consider it a poor design choice to make that method do something not related to xor like exponentiation I think it's a good illustrative example of how it simply calls the __xor__ method, but to do that for real would be bad practice
  • What is the reason for having in Python? [duplicate]
    In Python 3, they made the operator do a floating-point division, and added the operator to do integer division (i e , quotient without remainder); whereas in Python 2, the operator was simply integer division, unless one of the operands was already a floating point number
  • python - What exactly do u and r string prefixes do, and what are . . .
    This question is similar to: What's the difference between r'string' and normal 'string' in Python? and What's the u prefix in a Python string? Close voters, please vote to close as a duplicate of the second one, since I already voted to close as a duplicate of the first one
  • python - Errno 13 Permission denied - Stack Overflow
    For future searchers, if none of the above worked, for me, python was trying to open a folder as a file Check at the location where you try to open the file, if you have a folder with exactly the same name as the file you try to open (the file extension is part of the file name)
  • What is :: (double colon) in Python when subscripting sequences?
    I know that I can use something like string[3:4] to get a substring in Python, but what does the 3 mean in somesequence[::3]?




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