In this tutorial, we will explain how to use Python string islower() method with basic syntax by example for better understanding.

The String islower() method returns True if all the string characters are in lowercase; otherwise, it returns False.

Syntax:

<string_value/string_variable>.islower()

Input Parameters:

• string_value / String variable : The string that we want to check whether in lowercase or not.

Python Check String is lowercase

We can check the string value it’s in lowercase or not by simply using the islower() method. It means the string value contains only lowercase characters. one example of lowercase string value is “python”.

Example (1)

#Print the result of islower() method
msg='welcome to oraask'
print ('String variable is a lowercase string:', msg.islower())

Output of example (1)

String variable is a lowercase string: True

In the above example, the string variable ‘msg’ includes all the characters in the lowercase. When we checked the lowercase characters of it by msg.islower() in the print statement, it shows True.

Example (2)

#Print the result of islower() method
msg='welcome to ORAASK'
print ('String variable is a lowercase string:',msg.islower())

Output of example (2)

String variable is a lowercase string: False

In the above example, the string variable ‘msg’ includes some characters in the lowercase. When we checked the lowercase characters of it by msg.islower() in the print statement, it shows False.

In this tutorial, you have learned the string islower() method in Python. What is it? And how to check whether the string value is in lowercase or not.
If you have an inquiry or doubt, don’t hesitate to leave them in a comment. We are waiting for your valuable feedback.

Hopefully, it was clear and concise.

Similar Python String Checking Methods:

• isalnum() : It returns True if all the characters of the string are alphanumeric; otherwise, it returns False.
• isdigit() : It returns True if all the characters of the string are digit; otherwise, it returns False.
• isdecimal() : It returns True if all the characters of the string are decimal; otherwise, it returns False.
• isnumeric() : It returns True if all the characters of the string are numeric; otherwise, it returns False.
• isalpha() : It returns True if all the string characters are in lowercase; otherwise, it returns False.
• isupper() : It returns False if all the string characters are in an uppercase; otherwise, it returns False.
• isspace() : It returns True if all the characters of a string are whitespace; otherwise, it returns False.
• istitle() : It returns True if all the string words are properly “title cased”; otherwise, it returns False.
• startswith() : It returns True if the string starts with a given substring between the given start and end index; otherwise, it returns False.
• endswith() : It returns True if the string ends with a given substring between start and end index; otherwise, it returns False.

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