pandas.Series.str.islower

Series.str.islower()

Check whether all characters in each string are lowercase.

This is equivalent to running the Python string method str.islower() for each element of the Series/Index. If a string has zero characters, False is returned for that check.

Returns:

Series or Index of bool

Series or Index of boolean values with the same length as the original Series/Index.

See also

Series.str.isalpha

Check whether all characters are alphabetic.

Series.str.isnumeric

Check whether all characters are numeric.

Series.str.isalnum

Check whether all characters are alphanumeric.

Series.str.isdigit

Check whether all characters are digits.

Series.str.isdecimal

Check whether all characters are decimal.

Series.str.isspace

Check whether all characters are whitespace.

Series.str.isascii

Check whether all characters are ascii.

Series.str.isupper

Check whether all characters are uppercase.

Series.str.istitle

Check whether all characters are titlecase.

Examples

>>> s5 = pd.Series(['leopard', 'Golden Eagle', 'SNAKE', ''])
>>> s5.str.islower()
0     True
1    False
2    False
3    False
dtype: bool