Python string lower() usage and example

Python string methods

The lower() method of the string converts all uppercase letters in the string to lowercase and returns it.

The syntax of lower() method is:

string.lower()

Parameters of string lower()

The lower() method does not take any parameters.

Return value from string lower()

The lower() method returns the lowercase string from the given string. It converts all uppercase letters to lowercase.

If there are no uppercase letters, return the original string.

Example1: Convert string to lowercase

# Example string
string = "THIS　SHOULD　BE　LOWERCASE!"
print(string.lower())
# String and numbers
# All letters are lowercase
string = "Th!s　Sh0uLd　B3　L0w3rCas3!"
print(string.lower())

When running the program, the output is:

this should be lowercase!
th!s　sh0uld　b3　l0w3rcas3!

Example2: How to use lower() in the program?

# First string
firstString = "PYTHON　IS　AWESOME!"
# Second string
secondString = "PyThOn　Is　AwEsOmE!"
if(firstString.lower() == secondString.lower()):
　　　　print("The strings are the same.")
else:
　　　　print("The strings are not the same.")

When running the program, the output is:

The strings are the same.

Note:If you want to convert to uppercase string, please useupper()You can also useswapcase()Swap lowercase and uppercase letters.

Python string methods