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cartesian product in pandas
...port DataFrame, merge
df1 = DataFrame({'key':[1,1], 'col1':[1,2],'col2':[3,4]})
df2 = DataFrame({'key':[1,1], 'col3':[5,6]})
merge(df1, df2,on='key')[['col1', 'col2', 'col3']]
Output:
col1 col2 col3
0 1 3 5
1 1 3 6
2 2 4 5
3 2 4 6
See here f...
Why does ReSharper tell me “implicitly captured closure”?
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answered Apr 5 '13 at 20:49
ConsoleConsole
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How to redirect to a dynamic login URL in ASP.NET MVC
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Are non-synchronised static methods thread safe if they don't modify static class variables?
... Sled
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answered Mar 2 '11 at 21:01
Tomasz NurkiewiczTomasz Nurkiewicz
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Understanding offsetWidth, clientWidth, scrollWidth and -Height, respectively
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How to get indices of a sorted array in Python
...t;>> import numpy
>>> numpy.argsort(myList)
array([0, 1, 2, 4, 3])
http://docs.scipy.org/doc/numpy/reference/generated/numpy.argsort.html
This returns the arguments that would sort the array or list.
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