How to install Python and IDLE (Interactive Development Environment) in lubuntu 17.04?

First of all check if python is already installed in your PC with the command

python -V 

You may also use the following command to check for the updated version of python .

python3 -V 

If python is not there it will say "command not found".

To install python, type

sudo apt-get install python3.6

With the above command you will get with latest version installed on your pc. To check the version and installation of python , type

python3 --version 

 





Now check for IDLE in your system. Type

idle3.6

If IDLE is not available, it will say "command not found". To install the required package, type

sudo apt-get install idle-python3.6

With the above command you will get latest version of IDLE in your system.
Now to check and open the installed python editor (IDLE), type the following command

idle-python3.6 

 





 You will get python editor open in front of you as shown below:

Thats all. Enjoy Python :)