pandas.Series.str.islower#

Series.str.islower()[source]#

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.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