if statement in python 3.

step to use if statement:

x = int(input("Enter your integer number: "))

if x < 0:
    print ("It is negative")

else:
    print ("It is non-negative")

SAVE AND RUN.

REMEMBER: If and Else should be at the same "indentation level".

it will give error if you write:

if blah blah
  else blah blah

Python as calculator

You can use python as a calculator. For example:

width=7;
height=2;
area = width * height;
print = (area);

It shows 14.

Hello World in python 3.

- Printing 'hello world':

• write the following text in a text editor whatever you like

print ("Hello World!")

•    then, save and run.

It prints "Hello World"

Let's learn Python 3 together!

It is now one of the most popular programming language. Absolutely it's free to use. It runs on Windows, Mac Os X, Linux/Unix.  If want to know more (Click here)

Download it from here. Then installed it by steps in there.