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SQLAlchemy: print the actual query
... normally is not tasked with this, as this is handled appropriately by the Python DBAPI, not to mention bypassing bound parameters is probably the most widely exploited security holes in modern web applications. SQLAlchemy has limited ability to do this stringification in certain circumstances suc...
Can you list the keyword arguments a function receives?
...argdict) and not invalidArgs(func, argdict)
(This is good only as far as python's arg parsing. Any runtime checks for invalid values in kwargs obviously can't be detected.)
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How to write PNG image to string with the PIL?
...inal file format, so in this case you can use format=image.format.
In old Python 2 versions before introduction of the io module you would have used the StringIO module instead.
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It is more efficient to use if-return-return or if-else-return?
...code has to perform a jump if the if condition is false anyway.
Note that Python supports a syntax that allows you to use only one return statement in your case:
return A+1 if A > B else A-1
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How can you profile a Python script?
...me to run or people boast of how fast their particular solution runs. With Python, sometimes the approaches are somewhat kludgey - i.e., adding timing code to __main__ .
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How to pad zeroes to a string?
What is a Pythonic way to pad a numeric string with zeroes to the left, i.e. so the numeric string has a specific length?
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How to remove items from a list while iterating?
I'm iterating over a list of tuples in Python, and am attempting to remove them if they meet certain criteria.
26 Answers
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Abstract methods in Python [duplicate]
I am having trouble in using inheritance with Python. While the concept seems too easy for me in Java yet up till now I have been unable to understand in Python which is surprising to me at least.
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Evaluating a mathematical expression in a string
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@AnttiHaapala good example. Is it a bug in Python interpreter? Anyway, large input is trivially handled e.g., using if len(expr) > 10000: raise ValueError.
– jfs
Apr 29 '16 at 9:53
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How to determine a Python variable's type?
...True
>>> isinstance(i, (float, str, set, dict))
False
Note that Python doesn't have the same types as C/C++, which appears to be your question.
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