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DATA TYPES IN PYTHON
A data type is used to define the type of value a variable can contain. For example, a person’s
name must be stored as a string value whereas the person’s age must be stored as an integer.
Commonly used data types in Python are:
int: Positive or negative whole numbers (without any fractions), for example: a = 3
float: Any real number in which a fraction is denoted by a decimal symbol, for example: a = 3.5
string: A collection of one or more characters put in single or double-quotes, for example: a=”hello”
COMMENTS IN PYTHON
Comments in Python can be used to explain parts of the code. It can also be used to hide the code
as well. Python does not execute comments.
Comments are not a part of the program, but they do enhance the interactivity of the program
and make them readable. Python supports two types of comments: Single-line-comments and
multiline comments.
Single-line Comment
Python uses the hash (#) symbol for writing single-line comments.
Example:
Program: #printing a string
print("Hello TrackPad")
Output: Hello TrackPad
Multiple-line Comment
Python does not have a syntax for multiline comments. To add a multiple-line comment, you
could insert a # for each line. Example:
Program: #print three names
print("Roli")
print("Proloy")
print("Devansh")
Output: Roli Proloy Devansh
However, the text written inside triple quotes (''' or " " ") is also considered a comment. You can
use the triple quotes to write multiline comments. For example:
'''
This is a multiple-line comment that spans two lines in Python.
'''
Introduction to Python 65

