The elif Statement of Python

The elif statement allows you to check multiple expressions for truth value and execute a block of code as soon as one of the conditions evaluates to true.

Like the else, the elif statement is optional. However, unlike else, for which there can be at most one statement, there can be an arbitrary number of elif statements following an if.

The syntax of the if …. Elif statement is:

If expression1:

            Statement (s)

elif expression2:

            Statement(s)

elif expression3:

            Statement(s)

else:

            Statement(s)

Example:

#!/usr/bin/python

Var = 100

If var == 200:

            print  “1 – Got a true expression value”

            print  var

elif var  ==  150:

            print  “2 – Got a true expression value”

            print  var

elif var  ==  100:

            print  “3 – Got a true expression value”

            print  var

else:

            print  “4 – Got a true expression value”

            print  var

print “Good bye!”

This will produce following result:

3 – Got a true expression value

100

Good bye!