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cartesian product in pandas
...import 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...
Why does ReSharper tell me “implicitly captured closure”?
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392
The warning tells you that the variables end and start stay alive as any of the lambdas inside...
How to redirect to a dynamic login URL in ASP.NET MVC
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30
I think the main issue is that if you're going to piggyback on the built-in ASP.NET FormsAuthen...
In Python, if I return inside a “with” block, will the file still close?
...nusual way of course).
It is also mentioned in one of the examples of PEP-343 which is the specification for the with statement:
with locked(myLock):
# Code here executes with myLock held. The lock is
# guaranteed to be released when the block is left (even
# if via return or by an un...
What use is find_package() if you need to specify CMAKE_MODULE_PATH anyway?
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edited May 23 '17 at 12:26
Community♦
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answered Dec 31 '13 at 12:00
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Are non-synchronised static methods thread safe if they don't modify static class variables?
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edited Nov 17 '15 at 17:38
Sled
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answered...
Understanding offsetWidth, clientWidth, scrollWidth and -Height, respectively
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edited Oct 17 '17 at 8:23
user3249027
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answered Jan 11 '14 at 15:...
How to get indices of a sorted array in Python
...gt;> 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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Create a nonclustered non-unique index within the CREATE TABLE statement with SQL Server
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answered May 31 '11 at 20:50
Remus RusanuRemus Rusanu
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Where is Python's sys.path initialized from?
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answered May 22 '09 at 13:21
dfadfa
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