Answer 1

def function( ) :
............
............
............

the three dotted lines are the code whatever u write..
the function starts with a colon " : "
indented block means...shifted block...

def function( ) :
............
............
............

this func syntax is wrong...as it doesnt include a indented block
as {} in c/java/c++ is used to denote blocks..
here in python...indentation or shifted blocks..do that same thing