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Python | Passing string value to the function

Here, we will learn by example, how to pass the strong value to the function in Python?
By IncludeHelp Last updated : December 20, 2023

Problem statement

We have to define a function that will accept string argument and print it. Here, we will learn how to pass string value to the function?

Example

Consider the below example without sample input and output:

Input:
str = "Hello world"

Function call:
printMsg(str)

Output:
"Hello world"

Python program to pass a string to the function

# Python program to pass a string to the function

# function definition: it will accept
# a string parameter and print it
def printMsg(str):
    # printing the parameter
    print(str)

# Main code
# function calls
printMsg("Hello world!")
printMsg("Hi! I am good.")

Output

Hello world!
Hi! I am good.

Python function to accept a string and return total number of vowels

Write function that will accept a string and return total number of vowels

# function definition: it will accept
# a string parameter and return number of vowels
def countVowels(str):
    count = 0
    for ch in str:
        if ch in "aeiouAEIOU":
            count += 1
    return count

# Main code
# function calls
str = "Hello world!"
print('No. of vowels are {0} in "{1}"'.format(countVowels(str), str))

str = "Hi, I am good."
print('No. of vowels are {0} in "{1}"'.format(countVowels(str), str))

Output

No. of vowels are 3 in "Hello world!"
No. of vowels are 5 in "Hi, I am good."

In the above examples, we have used the following Python topics that you should learn:

• Python print() method
• Python strings
• Python conditional statements
• Python loops
• Python arithmetic operators

Python String Programs »