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What's the bad magic number error?
What's the "Bad magic number" ImportError in python, and how do I fix it?
15 Answers
1...
How to convert strings into integers in Python?
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int() is the Python standard built-in function to convert a string into an integer value. You call it with a string containing a number as the argument, and it returns the number converted to an integer:
print (int("1") + 1)
The above ...
C++ new int[0] — will it allocate memory?
... The standard (open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3337.pdf) does indeed say (3.7.4.1/2) that different calls to operator new[] should return different pointers. BTW, the new expression has some additional rules (5.3.4). I couldn't find any clue that new with 0 size is actually re...
How can I check for NaN values?
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@charlie-parker : In Python3, math.isnan is still a part of the math module. docs.python.org/3/library/math.html#math.isnan . Use numpy.isnan if you wish, this answer is just a suggestion.
– gimel
Sep 8 '16 ...
How to save a Python interactive session?
I find myself frequently using Python's interpreter to work with databases, files, etc -- basically a lot of manual formatting of semi-structured data. I don't properly save and clean up the useful bits as often as I would like. Is there a way to save my input into the shell (db connections, varia...
Python, compute list difference
In Python, what is the best way to compute the difference between two lists?
14 Answers
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In Python, how do I indicate I'm overriding a method?
...ace" implementing class while renaming a method in the "interface"..
Well Python ain't Java but Python has power -- and explicit is better than implicit -- and there are real concrete cases in the real world where this thing would have helped me.
So here is a sketch of overrides decorator. This wi...
What do parentheses surrounding an object/function/class declaration mean? [duplicate]
...pec: http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-262.pdf.
Taken verbatim from the docs:
11.1.6 The Grouping Operator
The production PrimaryExpression : ( Expression ) is evaluated as follows:
Return the result of evaluating Expression. This may be of type Reference.
I...
Sibling package imports
...h, if only other languages would make the same process as easy as it is in Python. I see why everyone loves this language. Btw, documentation is also excellent. I love extracting return types from unstructured text, it's a nice change from Javadoc and phpdoc. ffs....
– matt
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Iterating each character in a string using Python
...tring":
#do something with c
You can iterate pretty much anything in python using the for loop construct,
for example, open("file.txt") returns a file object (and opens the file), iterating over it iterates over lines in that file
with open(filename) as f:
for line in f:
# do so...