Page 196 - Ai Book - 10

u Sequence: Sequence is a collection of data (mutable or non-mutable) stored under a common name. There
are three types of data as a sequence in Python are:
• String: A string is a sequence of one or more letters or characters enclosed in a single or double quotes.
In Python, we can create empty string by just writing empty quotes with no value and multiline string
using triple quotes as shown.

• Lists: A list in Python is a collection of comma separated values or items within square brackets. You can
change or modify the values in the list i.e. it is mutable or changeable. For example:

• Tuples: A tuple is a list of comma separated values. You cannot change or modify the value of a tuple
whenever required, i.e, it is immutable. It is not necessary that all the available elements in a list are
of the same data type. The comma separated values must be enclosed in parenthesis (optional, not
necessary). For example:

Operators

Operators are some special symbols that trigger the operation on data. Or we can say that operators are used to
carry out some operations on operands.

Arithmetic Operators
Arithmetic operators are used to perform mathematical operations on variables and values. Arithmetic operators
used in Python are:

Name Symbol Purpose Example Output
Addition + Add two values 16+14 30
Subtraction - Subtract second values from the first
value 16-14 2
Multiplication * Multiplies two values 10*20 200
Division / Divides two values 9/3 3
Modulus % The modulus operator finds the
remainder after division of one number 100%99 1
by another.

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