How to Convert Strings to Lowercase in Python?

Converting Strings to Lowercase in Python

Lowercasing a string involves changing all uppercase characters to their corresponding lowercase counterparts. In Python, there's a convenient method to perform this operation: str.lower().

Syntax:

string.lower()

Function:

Converts the given string to lowercase.

Example:

>>> "KILOMETERS".lower()
'kilometers'

This method preserves special characters, numbers, and whitespace, as seen below:

>>> "123 SPECIAL CHARACTERS".lower()
'123 special characters'

Note:

Unlike some other programming languages, Python does not have a built-in function to directly uppercase a string. Instead, you can use the str.upper() method in conjunction with str.lower():

>>> string = "KILOMETERS"
>>> string = string.upper().lower()
>>> print(string)  # Output: 'kilometers'

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