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Add column with number of days between dates in DataFrame pandas
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df['A'] = pd.to_datetime(df['A'])
df['B'] = pd.to_datetime(df['B'])
In [11]: df.dtypes # if already datetime64 you don't need to use to_datetime
Out[11]:
A datetime64[ns]
B datetime64[ns]
dtype: object
In [12]: df['A'] - df['B']
Out[12]:
one -58 days
two -26 days
dtype: timedelta64[ns...
How to add a footer to a UITableView in Storyboard
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dbrajkovicdbrajkovic
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What exactly does the Access-Control-Allow-Credentials header do?
... John
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answered Jul 11 '14 at 3:40
monsurmonsur
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B-Tree vs Hash Table
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You can only access elements by their primary key in a hashtable.
This is faster than with a t...
Chrome browser reload options new feature
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Undock Chrome Developer Tools
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DarkWandererDarkWanderer
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What is ApplicationException for in .NET?
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Community♦
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answered Apr 16 '11 at 10:36
FemarefFemaref
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Best way to turn an integer into a month name in c#?
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leppieleppie
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isset() and empty() - what to use
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edited Jan 5 '18 at 11:17
Stefano Saitta
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answered Aug 25...
Putting text in top left corner of matplotlib plot
...ure, text, scatter, show
In [18]: f = figure()
In [19]: ax = f.add_subplot(111)
In [20]: scatter([3,5,2,6,8],[5,3,2,1,5])
Out[20]: <matplotlib.collections.CircleCollection object at 0x0000000007439A90>
In [21]: text(0.1, 0.9,'matplotlib', ha='center', va='center', transform=ax.transAxes)
Out[2...