Answers for "count number of point . in datframe"

python count variable and put the count in a column of data frame

df['freq'] = df.groupby('myvar')['myvar'].transform('count')

Posted by: Guest on June-19-2020

pandas count

>>> df.set_index(["Person", "Single"]).count(level="Person")
        Age
Person
John      2
Lewis     1
Myla      1

Posted by: Guest on February-24-2020

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