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Calculating Pearson correlation and significance in Python
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@dfrankow I think it's because imap cannot handle float. python gives an TypeError: unsupported operand type(s) for -: 'itertools.imap' and 'float' at num = psum - (sum_x * sum_y/n)
– alvas
Jan 24 '13 at 14:17
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How to make a variadic macro (variable number of arguments)
... C++ folks would like to encourage use of C++. Others do disagree, though; Linux Torvalds, for instance, has apparently rejected multiple proposed Linux-kernel patches that attempt to replace the identifier class with klass to permit compiling with a C++ compiler. Also note that there are some diffe...
What is the pythonic way to detect the last element in a 'for' loop?
I'd like to know the best way (more compact and "pythonic" way) to do a special treatment for the last element in a for loop. There is a piece of code that should be called only between elements, being suppressed in the last one.
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How is set() implemented?
I've seen people say that set objects in python have O(1) membership-checking. How are they implemented internally to allow this? What sort of data structure does it use? What other implications does that implementation have?
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Are list-comprehensions and functional functions faster than “for loops”?
In terms of performance in Python, is a list-comprehension, or functions like map() , filter() and reduce() faster than a for loop? Why, technically, they run in a C speed , while the for loop runs in the python virtual machine speed ?.
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Python function global variables?
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Within a Python scope, any assignment to a variable not already declared within that scope creates a new local variable unless that variable is declared earlier in the function as referring to a globally scoped variable with the keywo...
Python: Ignore 'Incorrect padding' error when base64 decoding
...ding === always works. Any extra = chars are seemingly safely discarded by Python.
– Acumenus
Nov 24 '19 at 21:30
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are there dictionaries in javascript like python?
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Actually, Python allows statement-terminating semicolons, so the first example is completely valid both in Python and JavaScript
– celticminstrel
Oct 15 '15 at 22:45
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Python unittest - opposite of assertRaises?
...code you would raise a KeyError, that would be an error, not a failure. In python - differently than some other languages - Exceptions are routinely used for control flow, this is why we have the except <ExceptionName> syntax indeed. To that regard, user9876's solution is simply wrong.
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Inherit docstrings in Python class inheritance
I'm trying to do some class inheritance in Python. I'd like each class and inherited class to have good docstrings. So I think for the inherited class, I'd like it to:
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