In this Section we will learn how to check for only lower cases using islower() function in pandas dataframe in python.
Let’s see with an example
Create a dataframe
##create dataframe
import pandas as pd
d = {'Quarters' : ['Quarter1','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 lowercase character in column of dataframe in python
# whether only lower case is present in Quarters column of dataframe in Python df['Quarters_islower'] = map(lambda x: x.islower(), df['Quarters']) print df
islower() Function in pandas python checks whether the string consists of only lowercase characters.
It returns True when only lowercase characters are present and it returns False when it does not have only lowercase
The result is stored in the Quarters_islower column of the dataframe.
So the resultant dataframe will be
