How to display number of rows with only lower case characters

Question

How to display number of rows with only lower case characters using pandas

Answer 1

Here I have made it for you:

 def get_lowercase(self):
"""
Return number of rows with only lower case characters for selected column
"""
    if self.serie.str.islower():
        lower = self.serie.str
        lower = lower.to_frame()
        return lower[self.col_name].values.sum()