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How to get the last N rows of a pandas DataFrame?
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Don't forget DataFrame.tail! e.g. df1.tail(10)
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What is the best way to count “find” results?
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How to pass parameters to a view
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answered Oct 18 '11 at 12:48
diradira
4,57122 gold badges1919 silver badges1717 bronze badges
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How can you get the SSH return code using Paramiko?
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Efficiently checking if arbitrary object is NaN in Python / numpy / pandas?
...atetimes too (if you use pd.NaT you won't need to specify the dtype)
In [24]: s = Series([Timestamp('20130101'),np.nan,Timestamp('20130102 9:30')],dtype='M8[ns]')
In [25]: s
Out[25]:
0 2013-01-01 00:00:00
1 NaT
2 2013-01-02 09:30:00
dtype: datetime64[ns]``
In [26]: pd.isnul...
What is the most efficient way to create a dictionary of two pandas Dataframe columns?
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How can I perform a culture-sensitive “starts-with” operation from the middle of a string?
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I'll co...
“You don't have a SNAPSHOT project in the reactor projects list.” when using Jenkins Maven release p
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How do I retrieve the number of columns in a Pandas data frame?
...so:
import pandas as pd
df = pd.DataFrame({"pear": [1,2,3], "apple": [2,3,4], "orange": [3,4,5]})
len(df.columns)
3
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