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  • 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 - 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 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
  • Is there a not equal operator in Python? - Stack Overflow
    Python is dynamically, but strongly typed, and other statically typed languages would complain about comparing different types There's also the else clause: # This will always print either "hi" or "no hi" unless something unforeseen happens if hi == "hi": # The variable hi is being compared to the string "hi", strings are immutable in Python
  • 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 In Python 2 X:
  • python - What is the purpose of the -m switch? - Stack Overflow
    You must run python my_script py from the directory where the file is located Alternatively - python path to my_script py However, you can run python -m my_script (ie refer to the script by module name by omitting the py) from anywhere, as long as Python can find it! Python searches as follows (not 100% sure about the order): Current directory
  • What is :: (double colon) in Python when subscripting sequences?
    When slicing in Python the third parameter is the step As others mentioned, see Extended Slices for a nice overview With this knowledge, [::3] just means that you have not specified any start or end indices for your slice Since you have specified a step, 3, this will take every third entry of something starting at the first index For example:
  • python - What exactly does += do? - Stack Overflow
    In Python, += is sugar coating for the __iadd__ special method, or __add__ or __radd__ if __iadd__ isn't present The __iadd__ method of a class can do anything it wants The list object implements it and uses it to iterate over an iterable object appending each element to itself in the same way that the list's extend method does





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