Returns a Boolean stating whether the string contains only letters and digits.
str. isalnum()
bool
#TODO
For 8-bit strings, this method is locale-dependent. Returns False if string is empty.
>>> ''.isalnum()
False
>>> 'abc123'.isalnum()
True
>>> 'abc'.isalnum()
True
>>> '123'.isalnum()
True
>>> 'Abc'.isalnum()
True
>>> '!@#'.isalnum()
False
>>> ' '.isalnum()
False
>>> 'ABC'.isalnum()
Trueisalnum(), isalpha(), isdigit(), islower(), isspace(), istitle(), isupper()