如何仅显示小写字符的行数

Question

I am trying to make a data explorer web app, wherein you upload a CSV file and it displays the number of rows with only lower case characters.

In the get_lowercase function below, the way they're written is they'll detect if a row contains any lower case characters while I want to detect rows that contain ONLY lower case characters. How to do that using pandas?

 def get_lowercase(self):
    """
    Return number of rows with only lower case characters for selected column
    """
    lower = self.serie.str.contains(r'[a-z]')
    lower = lower.to_frame()
    return lower[self.col_name].values.sum()

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()