Table of Contents

Python string exercises are necessary for a beginner to understand the program and to have regular practice. Check out the article to know more about Python String Excercise.

What is the Python String?

In Python, you can make words or sentences by using either single quotes (‘) or double quotes (“). So, ‘hello’ and “hello” mean the same thing. It’s like choosing between two different types of containers for your words in Python.

What are the examples of Python Strings?

Let us look into the Python program provided below:

Example 1

Python Program to find the number of vowels in the given string.

def count_vowels(input_string):
    vowels = "aeiouAEIOU"
    count = 0

    for char in input_string:
        if char in vowels:
            count += 1

    return count

# Example usage:
input_string = "Hello, World!"
result = count_vowels(input_string)
print(f'The number of vowels in "{input_string}" is: {result}')

Output

The number of vowels in "Hello, World!" is: 3

Example 2:

Check this example to illustrate how the Python Program will convert the string with the binary digits to an integer.

def binary_to_decimal(binary_string):
    decimal_value = int(binary_string, 2)
    return decimal_value

# Example usage:
binary_string = "1101"
decimal_result = binary_to_decimal(binary_string)
print(f'The decimal equivalent of binary "{binary_string}" is: {decimal_result}')

Output

The decimal equivalent of binary "1101" is: 13

Example 3:

The example below has provided the Python Program to drop all digits from the string.

def remove_digits(input_string):
    result_string = ''.join(char for char in input_string if not char.isdigit())
    return result_string

# Example usage:
input_string = "Hello123World456"
result = remove_digits(input_string)
print(f'The string without digits: "{result}"')

Output

The string without digits: "HelloWorld"

Conclusion

To conclude, navigating through the Python String Exercise will equip you with valuable skills in handling text effortlessly. From understanding the basics of string manipulation to mastering various methods, you’ve laid a strong foundation for your coding journey.

Python String Exercise-FAQs

Hridhya Manoj

Hello, I’m Hridhya Manoj. I’m passionate about technology and its ever-evolving landscape. With a deep love for writing and a curious mind, I enjoy translating complex concepts into understandable, engaging content. Let’s explore the world of tech together

Table of Contents

In Python, it is possible to concatenate two different strings, even with the same string to itself multiple times using the + and the * operator. Read this article to learn more about Python String Concatenation.

What is Python String Concatenation?

The + operator is an addition operator and will return the sum of two numbers. Hence, the + symbol will act as a string concatenation operator in Python. Thus, it will function with two string operands and get the end output as the concatenation of the two.

Hence, the characters of the string on the right of the plus symbol will appear at the left of its string. The result of the concatenation will be considered as the new string.

What are the different ways to concatenate strings?

Python String Concatenation will be considered as the method of adding two strings. Check out the different methods to concatenate strings below:

1. Using + operator
2. Using join() method
3. Using % operator
4. Using format() function
5. Using “,” (comma)
6. Using f-string (Literal String Interpolation)

1. String Concatenation using ‘+’ Operator

In Python, when you join two strings using the + sign, it’s called string concatenation. It’s like combining two pieces of text. However, you need to remember that strings, which are sequences of characters, cannot be changed directly. Whereas, if this operator is used on integers, then it will perform the mathematical addition.

Example 1

In this example, var1 and var2 will be stored in another variable such as var3

# Defining strings
var1 = "Hello "
var2 = "Skillvertex"
 
# + Operator is used to combine strings
var3 = var1 + var2
print(var3)

Output

Hello Skillvertex

2. String Concatenation using join() Method

The join() Method will be considered a String Method. Thus, will return the string where the elements of the sequence will be joined by the string operator.

Therefore, it will accept only the list as its argument, and the list size will be anything. The example below illustrates the Python concatenate string with the join() operator.

var1 = "Skill"
var2 = "vertex"
 
# join() method is used to combine the strings
print("".join([var1, var2]))
 
# join() method is used here to combine 
# the string with a separator Space(" ")
var3 = " ".join([var1, var2])
 
print(var3)

Output

Skillvertex
Skillvertex

3. String Concatenation using ‘%’ Operator

The % Operator will work for string formatting. Additionally, it will be used as a string concatenation. This operator is beneficial when you need to concatenate strings and will do simple formatting.

Example

var1 = "Welcome"
var2 = "Skillvertex"
 
# % Operator is used here to combine the string
print("% s % s" % (var1, var2))

Output

Welcome Skillvertex

4. String Concatenation using the format() function

The str, format will be considered as the string formatting method where they provide multiple substitutions and value formatting. Hence, it can concatenate the elements within the string through positional formatting.

Example

var1 = "Hello"
var2 = "Skillvertex"
 
# format function is used here to 
# combine the string
print("{} {}".format(var1, var2))
 
# store the result in another variable 
var3 = "{} {}".format(var1, var2)
 
print(var3)

Output

Hello Skillvertex
Hello Skillvertex

5. String Concatenation using “, ” comma

A comma will be considered as a great alternative to the string concatenation with the + operator. Thus, it is required to use the comma for combining the data types with the single whitespace in between.

var1 = "Skill"
var2 = "Vertex"
var3 = ".com"
 
# using comma to combine data types
# with a single whitespace.
print(var1, var2, var3)

Output

Skillvertex.com

6. String Concatenation using f-string

Using the F-string for the string concatenation will be operated on the Python versions above 3.6 and will be introduced in the PEP 498- Literal String Interpolation.

# Variables
var1 = "Skill"
var2 = "Vertex"
var3 = ".com"

# String concatenation using f-string
result = f"{var1} {var2} {var3}"

# Printing the result
print(result)

Output

Skill Vertex .com

Conclusion

In Python, string concatenation is the process of combining multiple strings into a single string. The + operator is commonly used for this purpose. When concatenating strings, it’s important to remember that strings are immutable, meaning the original strings are not modified; instead, a new string is created.

Additionally, Python offers convenient f-strings (formatted string literals) for concise and readable string concatenation, allowing variables to be easily inserted into strings. This straightforward process of joining strings provides flexibility in constructing meaningful and dynamic text outputs in Python programs.

Python String Concatenation- FAQs

Hridhya Manoj

Hello, I’m Hridhya Manoj. I’m passionate about technology and its ever-evolving landscape. With a deep love for writing and a curious mind, I enjoy translating complex concepts into understandable, engaging content. Let’s explore the world of tech together

Table of Contents

Python consists of a built-in string function and will be referred to as ”str” with handy features. Either single or double quotation marks enclose strings in Python. Read this article to learn more about Python String.

What is Python String?

The double or single quotes enclose this String literal. However, single quotes will be mostly used. Whereas, the double-quoted string has single quotes without any doubt. Single quoted string has double quotes.

Thus, string literals have multiple lines and require a backlash at the end of each line to escape the new line. String literal has triple quotes,””” or” that has multiple lines of text.

Example

# Python string example
my_string = "Hello, World!"

# Output the original string
print("Original String:", my_string)

# Get the length of the string
length_of_string = len(my_string)
print("Length of String:", length_of_string)

# Convert the string to uppercase
uppercase_string = my_string.upper()
print("Uppercase String:", uppercase_string)

# Check if the string contains a specific substring
contains_substring = "World" in my_string
print("Contains 'World':", contains_substring)

Output

Original String: Hello, World!
Length of String: 13
Uppercase String: HELLO, WORLD!
Contains 'World': True

Assign String to a Variable

Assigning the string to the variable with the equal sign and the string. Let us look into the example given below:

Example

# Assigning a string to a variable
my_string = "Hello, Python!"

# Output the variable value
print("My String:", my_string)

Output

My String: Hello, Python!

What is Multiline Strings?

The multiline string will allow you to assign the multiline string to the variable with the three quotes.

# Multiline string example
multiline_string = '''
This is a multiline
string in Python.
It can span multiple lines.
'''

# Output the multiline string
print("Multiline String:")
print(multiline_string)

Output

Multiline String:
This is a multiline
string in Python.
It can span multiple lines.

Strings are Array

Strings in Python are considered as an array of bytes that will represent the Unicode characters. Hence, python won’t have a character data type. A single character has a string with a length of 1.

So, square brackets have the elements of the string.

Example

# String as an array example
my_string = "Hello, Python!"

# Accessing individual characters using indexing
first_char = my_string[0]
second_char = my_string[1]

# Output the characters
print("First Character:", first_char)
print("Second Character:", second_char)

# Iterating through the string as if it's an array
print("Iterating through the string:")
for char in my_string:
    print(char)

Output

First Character: H
Second Character: e
Iterating through the string:
H
e
l
l
o
,
 
P
y
t
h
o
n
!

Looping Through a String

Strings are arrays that will help to loop through the characters in the string and with a for loop.

# Looping through a string example
my_string = "Hello, Python!"

# Iterating through the string using a for loop
print("Iterating through the string:")
for char in my_string:
    print(char)

Output

Iterating through the string:
H
e
l
l
o
,
 
P
y
t
h
o
n
!

What is String Length in Python?

In Python, the length of the string can be evaluated using the len() function.

Example

# String length example
my_string = "Hello, Python!"

# Get the length of the string
length_of_string = len(my_string)

# Output the length of the string
print("Length of the String:", length_of_string)

Output

Length of the String: 14

Check String

Python allows you to check a certain phase or character in the string. Hence, it uses the keyword ‘in‘

Example

# String checking example
my_string = "Hello, Python!"

# Check if the string contains a specific substring
substring_to_check = "Python"
if substring_to_check in my_string:
    print(f"The string '{my_string}' contains the substring '{substring_to_check}'.")
else:
    print(f"The string '{my_string}' does not contain the substring '{substring_to_check}'.")

Output

The string 'Hello, Python!' contains the substring 'Python'.

Using the if statement in the above code.

# String checking with if statement example
my_string = "Hello, Python!"

# Check if the string contains a specific substring using if statement
substring_to_check = "Python"
if substring_to_check in my_string:
    print(f"The string '{my_string}' contains the substring '{substring_to_check}'.")
else:
    print(f"The string '{my_string}' does not contain the substring '{substring_to_check}'.")

Output

The string 'Hello, Python!' contains the substring 'Python'.

What is Check if NOT in Python?

Python allows you to find if a certain phrase or character doesn’t exist in the string.

Example

# String checking with 'not in' example
my_string = "Hello, Python!"

# Check if the string does not contain a specific substring using 'not in'
substring_to_check = "Java"
if substring_to_check not in my_string:
    print(f"The string '{my_string}' does not contain the substring '{substring_to_check}'.")
else:
    print(f"The string '{my_string}' contains the substring '{substring_to_check}'.")

Output

The string 'Hello, Python!' does not contain the substring 'Java'.

Let us look at this example using the if statement.

# String checking with if statement example
my_string = "Hello, Python!"

# Check if the string does not contain a specific substring using if statement
substring_to_check = "Java"
if substring_to_check not in my_string:
    print(f"The string '{my_string}' does not contain the substring '{substring_to_check}'.")
else:
    print(f"The string '{my_string}' contains the substring '{substring_to_check}'.")

Output

The string 'Hello, Python!' does not contain the substring 'Java'.

Conclusion

To conclude, string operations are crucial for effective text manipulation in Python. These skills serve as a foundation for more advanced programming concepts and are valuable for several applications.

Python String- FAQs

Hridhya Manoj

Hello, I’m Hridhya Manoj. I’m passionate about technology and its ever-evolving landscape. With a deep love for writing and a curious mind, I enjoy translating complex concepts into understandable, engaging content. Let’s explore the world of tech together