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String concatenation operator (+): String concatenation operator joins two or more strings
into one string.

Program 11 A program to demonstrate string concatenation.

Program11.py Output

File Edit Format Run Options Window Help HelloWorld

str1 = 'Hello'
str2 = 'World'
print(str1 + str2)

String replication operator (*): The replication operator is used to repeat the string for a given
number of times.

Program 12 A program to demonstrate string repetition.

Program12.py Output

File Edit Format Run Options Window Help HelloHello
HelloHelloHelloHelloHello
str1 = 'Hello'
print(str1 * 2)
print(str1 * 5)

BUILT-IN STRING FUNCTIONS

Python offers a wide range of built-in functions for manipulating strings. Some built-in functions
are shown in the following table:

Functions Description Syntax

count() It returns the number of times a specified value occurs in string.count(value)
a string.
len() It returns the total number of characters in the string. len(string)

lower() It converts a string into lower case. string.lower()
replace() It returns a string where a specified value is replaced with string.replace(old_
a specified value. value, new_value)

title() It converts the first character of each word to uppercase. string.title()

upper() It converts a string into uppercase. string.upper()
capitalize() It converts the first character of the string to uppercase. string.capitalize()

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Step Ahead with Python