isalpha() function in pandas is used to check for the presence of alphabetic character in a column of dataframe in python. Let’s see an example of isalpha() function in pandas.
Create a dataframe
##create dataframe
import pandas as pd
d = {'Quarters' : ['quarterone','quarter2','quarter3','quarter4'],
'Revenue':[23400344.567,54363744.678,56789117.456,4132454.987]}
df=pd.DataFrame(d)
print df
The resultant dataframe will be
Check for alphabetic in column of dataframe in python
# whether alphabetic values present in Quarters column of dataframe in Python df['Quarters_isalphabetic'] = map(lambda x: x.isalpha(), df['Quarters']) print df
isalpha() Function in pandas python checks whether the string consists of alphabetic characters.
It returns True when alphabetic value is present and it returns False when the alphabetic value is not present.
The result is stored in the Quarters_isalphabetic column of the dataframe.
So the resultant dataframe will be
