Why python is a case sensitive language

Question

https://code.sololearn.com/WEzo6Pu2H7QH/?ref=app

Answer 1

"""
Python is case sensitive ,means it treats both uppercase and lowercase as different things.
mypy =5
MyPy=10
both `mypy` and `MyPy` are treated as 2 different variables.
print(mypy) #5
print(MyPy) #10
Same for keywords, you can't use `Print` for `print`
some languages are case insensitive.
HTML is one of case insensitive languages.
So here <header> and <HEADER> are same things.
<h1> and <H1> are also same.
In sql as well case doesn't matter.
"""
~https://www.sololearn.com/discuss/2056912/?ref=app
Abhishek Yadav , please change tags and remove the code link. add relevant tags only.