Python Strings

Python Strings and
Character Encoding

CSC501-Term 3
AQB ATHS 2022-2023

Working with Strings

• A string is a sequence of characters enclosed in quotes.

• Strings are immutable in Python, which means they

cannot be changed directly.

• You can perform several operations on strings, such as

concatenation (+), replication (*), ord() (to get the ASCII
value of a character), chr() (to get the character for an
ASCII value), indexing (to access individual characters in
a string), slicing (to extract a substring from a string), in
(to check if a substring is present in a string), and not in
(to check if a substring is not present in a string).

• Knowing how to work with strings is essential for

processing text data in Python.

Match

Match the following

• String is

• Strings are

• concatenation (+), replication (*), ord()), chr(),slicing()

• chr()

• indexing

a sequence of characters enclosed in quotes

immutable in Python

are operations on strings

to get the character for an ASCII value

to access individual characters in a string

• a sequence of characters enclosed in quotes

• immutable in Python

• are operations on strings

• to get the character for an ASCII value

• to access individual characters in a string

Difference between Strings and Lists

• A list is a collection of items that can be of different types.
• Lists are mutable in Python, which means they can be changed

directly.

• The main difference between strings and lists is their mutability.
• You can perform several operations on lists, such as adding and

removing items, accessing individual items, and sorting the list.

• Understanding the difference between strings and lists is important

for choosing the appropriate data structure for your program.

Multiple Choice

What is required at the end of an if statement?

• :

• ;

• nothing

• !

Multiple Choice

How do you use two conditions at the same time?

• AND

• , Comma

• &

• None of the above