In programming the term nesting is used when conditional statements appear one inside other. In Python, new if statement can be nested in if as well as else block. A you must be knowing, each if block has increasing level of indentation. Hence in case of nested if condition, indent level of inner block will increase from outer block. A general syntax of nested if can be as below:
if expr1==True: if expr2==True: #this block will be executed when expr1 and expr2 are true else: #this block if expr is true but expr2 is false else: if expr3==True: #if expr1 is false and expr3 is true else: #when expr1 and expr3 are false
