Python IF Statement

It is similar to that of other languages. The if statement contains a logical expression using which data is compared and a decision is made based on the result of the comparison.

Syntax

if expression:
   statement(s)

If the boolean expression evaluates to TRUE, then the block of statement(s) inside the if statement is executed. If boolean expression evaluates to FALSE, then the first set of code after the end of the if statement(s) is executed.

Flow Diagram

Example

#!/usr/bin/python

var1 = 100
if var1:
   print "1 - Got a true expression value"
   print var1

var2 = 0
if var2:
   print "2 - Got a true expression value"
   print var2
print "Good bye!"

When the above code is executed, it produces the following result −

1 - Got a true expression value
100
Good bye!

Useful Video Courses

---

Video

Python Online Training

Most Popular

187 Lectures 17.5 hours

Malhar Lathkar

More Detail

Video

Python Essentials Online Training

55 Lectures 8 hours

Arnab Chakraborty

More Detail

Video

Learn Python Programming in 100 Easy Steps

136 Lectures 11 hours

In28Minutes Official

More Detail

Video

Python with Data Science

75 Lectures 13 hours

Eduonix Learning Solutions

More Detail

Video

Python 3 from scratch to become a developer in demand

70 Lectures 8.5 hours

Lets Kode It

More Detail

Video

Python Data Science basics with Numpy, Pandas and Matplotlib

63 Lectures 6 hours

Abhilash Nelson

More Detail