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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 - Iterating over dictionaries using for loops - Stack Overflow
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 in mind when you answered this, because in Python 3 for key in my_dict keys() will still have the same problem with changing the dictionary size during iteration
- 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]?
- What does the percentage sign mean in Python [duplicate]
1 In python 2 6 the '%' operator performed a modulus I don't think they changed it in 3 0 1 The modulo operator tells you the remainder of a division of two numbers
- python - What exactly does += do? - Stack Overflow
I need to know what += does in Python It's that simple I also would appreciate links to definitions of other shorthand tools in Python
- 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 - How should I use the Optional type hint? - Stack Overflow
Python 3 10 introduces the | union operator into type hinting, see PEP 604 Instead of Union[str, int] you can write str | int In line with other type-hinted languages, the preferred (and more concise) way to denote an optional argument in Python 3 10 and up, is now Type | None, e g str | None or list | None
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