convert a string to lowercase in python

  lowercase_string = str.lower()

This code uses the built-in lower() method of the Python String object to convert a string to lowercase. In this code, the variable “lowercase_string” is used to store the output of the lower() method. The lower() method takes a string as its argument and returns a copy of the string in lowercase characters. The argument, which is “str” in this code, is the string that we want to convert to lowercase. This code is very straightforward and efficient since it takes advantage of the existing functionality of the lower() method in the Python String object.