The isalpha() method checks if a string consists of only letters.
Example
#!/usr/bin/python3
# -*- coding: UTF-8 -*-
str1 = 'ABCDabcd'
str2 = "ABCD abcd"
str3 = "ABCDabcd@"
str4 = "ABCDabcd1!"
print (str1.isalpha())
print (str2.isalpha())
print (str3.isalpha())
print (str4.isalpha())
Output:
True
False
False
False
Syntax
str.isalpha()
Parameters
The method doesn’t take any parameters.
Return Value
It returns True or False, depending upon whether the string contains only letters.