Python String Concatenation

Different Ways of String Concatenation in Python

Method 1: Python String Concatenation using + Operator

The simplest Method is to use the + Operator for the Python string Concatenation. This Operator is used to add multiple strings together. Here, the arguments should be a string. The + Operator joins the string stored in v1 and v2 and stores it in another variable, v3.

• Python

Python

# Defining the strings
v1 = "Coding "
v2 = "Ninjas"
# The + Operator used to combine the strings
v3 = v1 + v2
print(v3)

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Output:

Coding Ninjas

Method 2: Python String Concatenation using join() Method

The join() method returns a string with a str separator joining the sequence elements. This Method will combine the strings stored in the v1 and v2 variables. This Method only accepts the list as the argument; the list size can be anything. 

• Python

Python

v1 = "Coding"
v2 = "Ninjas"
# join() method used to combine strings
print("".join([v1, v2]))
# join() method is used to combine
# string with the separator Space(" ")
v3 = " ".join([v1, v2])
print(v3)

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Output:

CodingNinjas
Coding Ninjas

Method 3: Python String Concatenation using % Operator

The % operator is used for string formatting. It can be used for string concatenation also. This Operator is useful when we need to concatenate the strings and perform simple formatting. The % denotes string data type. The values in both the variables will be passed to the string %s and become "Coding Ninjas".

• Python

Python

v1 = "Coding"
v2 = "Ninjas"
 
# % Operator used to combine string
print("% s % s" % (v1, v2))

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Output:

Coding Ninjas

Method 4: Python String Concatenation using format() function 

This Method allows value formatting and multiple substitutions in Python. This Method is used in Python for string formatting as string.format(). This Method concatenates the elements within a string through positional formatting. In this Method, curly braces {} will be used to set the position of the strings. The first curly brace stores the first variable, and the second curly brace stores the second variable. Finally, it will print  "Coding Ninjas".

• Python

Python

v1 = "Coding"
v2 = "Ninjas"
print("{} {}".format(v1,v2))
 
# store the output in another variable
v3 = "{} {}".format(v1, v2)
print(v3)

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Output:

Coding Ninjas
Coding Ninjas

Method 5: Python String Concatenation using (, comma)

When you need to include only one whitespace, one of the best alternatives to string concatenation using the “+” operator is “,”. 

• Python

Python

v1 = "Coding"
v2 = "Ninjas"
 
# combine data types with the single whitespace.
print(v1, v2)

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Output:

Coding Ninjas

Method 6: Python String Concatenation using f-string

If you use Python 3.6+, you can easily use the f-string function for string concatenation. This new method to format the strings was introduced in PEP 498 - Literal String Interpolation.

• Python

Python

v1 = 'Coding'
v2 = 'Ninjas'
v3 = f'{v1} {v2}'
print('String Concatenation =', v3)

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Output:

String Concatenation = Coding Ninjas

You can practice by yourself with the help of online python compiler for better understanding.

Frequently Asked Questions

What is the most efficient way to concatenate strings in Python?

Use the join() method in Python for efficient string concatenation; it creates one string object. In contrast, the + operator generates a new object each time it's used.

How to concatenate two strings?

Using the + operator or the str.join() method, you can concatenate two strings in Python.

What is concat() in Python?

Python does not have a concat() method for strings. String concatenation is typically done using the + operator or join() method.

Can we concatenate three strings in Python?

Yes, you can concatenate three strings in Python using the + operator, join() method, or other string manipulation techniques.

Conclusion

In this article, we have learned Python String Concatenation. Python offers several methods for string concatenation, each with its own advantages depending on the use case. While the + operator is simple and intuitive, it may not always be the most efficient for concatenating multiple strings, especially in loops. Methods like join() provide better performance and are ideal for concatenating large numbers of strings.

You can also refer to the below articles:

• Functions-in-python
   
• Oops-in-python
   
• Control-flow-in-python
   
• loops-in-python
   
• Fibonacci Series in Python
   

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