Comments are used to write something which the programmer does not want to execute. Comments can be written to mark author name, date when the program is written, adding notes for your future self, etc. Comments are used to make the code more understandable for the programmer. The Interpreter does not execute comments. There are two types of comments in Python Language -: Single Line Comment Multi-Line Comment Single Line Comment : Single Line comments are the comments which are written in a single line, i.e., they occupy the space of a single line. We use # (hash/pound to write single-line comments). E.g., the below program depicts the usage of comments. import os #This is a comment print ( "Main code started" ) #Now I will write my code here: print ( os . listdir ( ) ) Copy Multi-Line Comment : Multi-Line comments are the comments which are created by using multiple lines, i.e., they occupy more than one line in a program. We use ' ' '….. Comment ….'
First of all, I would like to tell you one thing - the main motive of using Python is not to do raw calculations. You will perhaps never use python to calculate 3+8 or 34*232 for that matter. Yeah, that’s true! Python is not just limited to do calculations. It has a vast number of uses and has many merits or advantages. Using Python you can do most of the things, such as creating games, apps, software, websites, etc. To do calculations in Python, open Windows PowerShell (or terminal of your choice if you are on Linux or Mac) and type, "python" to open the Python interpreter. You will see a screen like this: Then simply type or put whatever mathematical calculation you want to do. 5+9, 6-9 choice is all yours! When you type python, you are inside an interactive python shell where you can type anything and the value is displayed on the screen after the computation. That's how you can use python as a calculator. And that’s how you can easily do any type of mathematical ca