My code is the following:

    def value(one,two):
if one < two:
return two
else:
return one

Every time I try to run it, it gives the following error :

IndentationError: expected an indented block

I tried rewriting the code, and still nothing happened.

Python uses (requires) indentation to identify blocks in your code. For example:

def value(one,two):if one < two: return twoelse:return one

You have something along the lines of:

def value(one,two):
if one < two: 
return two
else:
return one

Which yields the error you are seeing.