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Converting a Pandas GroupBy output from Series to DataFrame
...attle 2 2
2 Mallory Portland 2 2
3 Mallory Seattle 1 1
Or something like:
In [36]: DataFrame({'count' : df1.groupby( [ "Name", "City"] ).size()}).reset_index()
Out[36]:
Name City count
0 Alice Seattle 1
1 ...
Generate a UUID on iOS from Swift
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635
Try this one:
let uuid = NSUUID().uuidString
print(uuid)
Swift 3/4/5
let uuid = UUID().uuid...
Create Git branch with current changes
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730
If you hadn't made any commit yet, only (1: branch) and (3: checkout) would be enough.
Or, in o...
How to select unique records by SQL
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Arsen Khachaturyan
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answered Oct 29 '09 at 5:09
mjalldaymjallday
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How to format a string as a telephone number in C#
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Using isKindOfClass with Swift
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answered Jun 14 '14 at 13:29
KPMKPM
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How to test multiple variables against a value?
...inverse; testing multiple values against a single variable; x == 1 or 2 or 3 would fail for the same reasons. Use x == 1 or x == 2 or x == 3 or x in {1, 2, 3}.
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C# binary literals
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Drew Noakes
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answered May 8 '14 at 15:37
BTownTKDBTownTK...
Installing specific package versions with pip
...the --no-site-packages option. The current version shown in PyPi is 1.2.3 . Is there a way to install the older version? I found an article stating that this should do it:
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