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安裝中文字典英文字典辭典工具!
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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:
- 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
- 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
- math - ` ` vs ` ` for division in Python - Stack Overflow
In Python 2 2 or later in the 2 x line, there is no difference for integers unless you perform a from __future__ import division, which causes Python 2 x to adopt the 3 x behavior Regardless of the future import, 5 0 2 will return 2 0 since that's the floor division result of the operation
- 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 –
- syntax - Python integer incrementing with ++ - Stack Overflow
Simply put, the ++ and --operators don't exist in Python because they wouldn't be operators, they would have to be statements All namespace modification in Python is a statement, for simplicity and consistency That's one of the design decisions And because integers are immutable, the only way to 'change' a variable is by reassigning it
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