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Chapter Profile
DATA TYPES
A data type specifies the type of value a variable can contains. For example, a person’s name must
be stored as a string value whereas the person’s age must be stored as an integer. Data types in
Python are:
int: Positive or negative whole numbers (without any fractions). Example: a = 3
float: Any real number in which a fraction is denoted by a decimal symbol. Example: a = 3.5
string: A string value is a collection of one or more characters put in single or double quotes.
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. Comments enable us to understand the way a program works. In python, any
statement starting with # symbol is known as a comment. Python does not execute comments.
Comments are not a part of the program, but they do enhance the interactivity of the program
and make it readable. Python supports two types of comments: Single line comment and
Multiline comment.
Single Line Comment
In case, a user wants to specify a single line comment, then comment must start with the symbol #.
Example:
Program: Output:
Hello World
# printing a string
print("Hello world")
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: Output:
# printing a string Hello World
# print four names Reeta
print("Hello World") Chirag
print("Reeta") Akshat
print("Chirag") Tushar
print("Akshat")
print("Tushar")
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