python contains string case insensitive code example

Example 1: how to make a string case insensitive in python

if thing.lower() == "text":

Example 2: python contains string case insensitive

>>> str = "Messi is the best SoCceR player"
>>> "soccer" in str.lower()
True
>>> "football" in str
False

Example 3: How to make String.Contains case insensitive?

Assert.IsTrue(text.ToUpper().Contains("Sample".ToUpper()));