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How to apply a function to two columns of Pandas dataframe
...1
0 1.000000 0.000000
1 -0.494375 0.570994
2 1.000000 0.000000
3 1.876360 -0.229738
4 1.000000 0.000000
In [50]: def f(x):
....: return x[0] + x[1]
....:
In [51]: df.apply(f, axis=1) #passes a Series object, row-wise
Out[51]:
0 1.000000
1 0.076619
2 1.000000
3 1...
What does -D_XOPEN_SOURCE do/mean?
...erent versions of the standard.
500 - X/Open 5, incorporating POSIX 1995
600 - X/Open 6, incorporating POSIX 2004
700 - X/Open 7, incorporating POSIX 2008
You can tell which one you need (if any) by looking at the man page for each function you call.
For example, man strdup says:
Feature Te...
What happens to global and static variables in a shared library when it is dynamically linked?
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answered Oct 15 '13 at 6:02
Mikael PerssonMikael Persson
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How do I spool to a CSV formatted file using SQLPLUS?
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Determine if variable is defined in Python [duplicate]
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Reverse colormap in matplotlib
...atoptomato
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How to len(generator()) [duplicate]
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Generators have no length, they aren't collections after all.
Generators are functions with a ...
What is “android.R.layout.simple_list_item_1”?
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Zakaria, that is a reference to an built-in XML layout document that is part of the Android OS,...
Can a variable number of arguments be passed to a function?
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How do you test that a Python function throws an exception?
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edited May 5 '16 at 15:59
Robert Siemer
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