Skip to content
Python Central Hub

Python String Concatenation

In Python, we can concatenate strings using the ++ operator. The ++ operator allows us to add two or more strings together. Let’s look at some examples.

strings.py
# define strings
string1 = "Hello"
string2 = "World"
# concatenate strings
string3 = string1 + string2
print(string3)
strings.py
# define strings
string1 = "Hello"
string2 = "World"
# concatenate strings
string3 = string1 + string2
print(string3)

Output:

command
C:\Users\Your Name> python strings.py
HelloWorld
command
C:\Users\Your Name> python strings.py
HelloWorld

In the above example, we have concatenated two strings using the ++ operator. The ++ operator concatenates the second string to the end of the first string.

Adding a Space

We can add a space between two strings by adding an empty string ("""" or '''') to the first string. Let’s look at an example.

strings.py
# define strings
string1 = "Hello"
string2 = "World"
# concatenate strings
string3 = string1 + " " + string2
print(string3)
strings.py
# define strings
string1 = "Hello"
string2 = "World"
# concatenate strings
string3 = string1 + " " + string2
print(string3)

Output:

command
C:\Users\Your Name> python strings.py
Hello World
command
C:\Users\Your Name> python strings.py
Hello World

In the above example, we have concatenated two strings with a space in between. We have added an empty string ("""") with a space in between to the first string.

Concatenate Strings of Different Data Types

We can concatenate strings of different data types in Python. But we need to convert the non-string data types to strings before concatenating them. We can use the str()str() function to convert non-string data types to strings. Let’s look at an example.

strings.py
# define strings
string1 = "Hello"
number = 5
# concatenate strings
string2 = string1 + str(number)
print(string2)
strings.py
# define strings
string1 = "Hello"
number = 5
# concatenate strings
string2 = string1 + str(number)
print(string2)

Output:

command
C:\Users\Your Name> python strings.py
Hello5
command
C:\Users\Your Name> python strings.py
Hello5

In the above example, we have concatenated a string and an integer. We have converted the integer to a string using the str()str() function before concatenating it with the string.

Concatenate Strings Using join()

We can also concatenate strings using the join()join() method. The join()join() method takes an iterable as an argument and concatenates the elements of the iterable to the string. Let’s look at an example.

strings.py
# define strings
string1 = "Hello"
string2 = "World"
# concatenate strings
string3 = "".join([string1, string2])
print(string3)
strings.py
# define strings
string1 = "Hello"
string2 = "World"
# concatenate strings
string3 = "".join([string1, string2])
print(string3)

Output:

command
C:\Users\Your Name> python strings.py
HelloWorld
command
C:\Users\Your Name> python strings.py
HelloWorld

In the above example, we have concatenated two strings using the join()join() method. We have passed a list of strings to the join()join() method. The join()join() method has concatenated the strings in the list and returned the concatenated string.

Concatenate Strings Using f-strings

We can also concatenate strings using f-strings. f-strings are string literals that have an ff at the beginning and curly braces ({}{}) containing expressions that will be replaced with their values. Let’s look at an example.

strings.py
# define strings
string1 = "Hello"
string2 = "World"
# concatenate strings
string3 = f"{string1} {string2}"
print(string3)
strings.py
# define strings
string1 = "Hello"
string2 = "World"
# concatenate strings
string3 = f"{string1} {string2}"
print(string3)

Output:

command
C:\Users\Your Name> python strings.py
Hello World
command
C:\Users\Your Name> python strings.py
Hello World

In the above example, we have concatenated two strings using f-strings. We have used curly braces ({}{}) to insert the values of the variables into the string.

Concatenate Strings Using % Operator

We can also concatenate strings using the %% operator. The %% operator is also known as the string formatting operator. Let’s look at an example.

strings.py
# define strings
string1 = "Hello"
string2 = "World"
# concatenate strings
string3 = "%s %s" % (string1, string2)
print(string3)
strings.py
# define strings
string1 = "Hello"
string2 = "World"
# concatenate strings
string3 = "%s %s" % (string1, string2)
print(string3)

Output:

command
C:\Users\Your Name> python strings.py
Hello World
command
C:\Users\Your Name> python strings.py
Hello World

In the above example, we have concatenated two strings using the %% operator. We have used %s%s to insert the values of the variables into the string.

Concatenate Strings Using String Slicing

We can also concatenate strings using string slicing. Let’s look at an example.

strings.py
# define strings
string1 = "Hello"
string2 = "World"
# concatenate strings
string3 = string1[:2] + string2[2:]
print(string3)
strings.py
# define strings
string1 = "Hello"
string2 = "World"
# concatenate strings
string3 = string1[:2] + string2[2:]
print(string3)

Output:

command
C:\Users\Your Name> python strings.py
HeloWorld
command
C:\Users\Your Name> python strings.py
HeloWorld

String Concatenation in a Loop

We can also concatenate strings in a loop. Let’s look at an example.

strings.py
# define strings
string1 = "Hello"
string2 = "World"
# concatenate strings
string3 = ""
for i in range(5):
    string3 += string1 + string2
print(string3)
strings.py
# define strings
string1 = "Hello"
string2 = "World"
# concatenate strings
string3 = ""
for i in range(5):
    string3 += string1 + string2
print(string3)

Output:

command
C:\Users\Your Name> python strings.py
HelloWorldHelloWorldHelloWorldHelloWorldHelloWorld
command
C:\Users\Your Name> python strings.py
HelloWorldHelloWorldHelloWorldHelloWorldHelloWorld

In the above example, we have concatenated two strings in a loop. We have used the +=+= operator to concatenate the strings in the loop.

Multiline String Concatenation

We can also concatenate multiline strings in Python. Let’s look at an example.

strings.py
# define strings
string1 = """Hello
World"""
string2 = """Hello
World"""
# concatenate strings
string3 = string1 + string2
print(string3)
strings.py
# define strings
string1 = """Hello
World"""
string2 = """Hello
World"""
# concatenate strings
string3 = string1 + string2
print(string3)

Output:

command
C:\Users\Your Name> python strings.py
Hello
WorldHello
World
command
C:\Users\Your Name> python strings.py
Hello
WorldHello
World

Multiple String Concatenation

We can also concatenate multiple strings in Python. Let’s look at an example.

strings.py
# define strings
string1 = "Hello"
string2 = "World"
# concatenate strings
string3 = string1 * 3 + string2 * 2
print(string3)
strings.py
# define strings
string1 = "Hello"
string2 = "World"
# concatenate strings
string3 = string1 * 3 + string2 * 2
print(string3)

Output:

command
C:\Users\Your Name> python strings.py
HelloHelloHelloWorldWorld
command
C:\Users\Your Name> python strings.py
HelloHelloHelloWorldWorld

In the above example, we have concatenated multiple strings. We have used the ** operator to concatenate the strings.

Conclusion

In this tutorial, we have learned how to concatenate strings in Python. We have also learned how to concatenate strings of different data types in Python. Now you can solve problems that require string concatenation in Python. 🎉

Was this page helpful?

Let us know how we did