How to join two strings to convert to a single string in Python?

In Python, we can join two strings into one single string using different ways, such as -

• Using the + Operator
• Using the join() Method
• Using Formatted Strings
• String Concatenation in Loops

Let us look at each method with examples.

Using + Operator

The most common way to combine two strings into one in Python is by using the + operator. It joins the strings exactly as they are, without any space or separator in between.

Example

In the following example, we are joining two strings using the + operator -

str1 = "Hello"
str2 = "World"

result = str1 + " " + str2
print(result)

Following is the output obtained -

Hello World

Using the join() Method

The join() method is used when we need to combine multiple strings with a separator. Even for two strings, you can place them in a list or tuple and use join() method to merge them with or without a separator.

Example

In the following example, we are joining two strings with a space in between using ' '.join() method -

str1 = "Hello"
str2 = "World"

result = " ".join([str1, str2])
print(result)

We get the output as shown below -

Hello World

Using f-strings

Formatted string literals, or f-strings, are used to insert variables directly into a string using curly braces. To combine two strings, we need to use the string format string f"{str1} {str2}" -

Example

In the following example, we combine two strings using an f-string -

str1 = "Hello"
str2 = "World"

result = f"{str1} {str2}"
print(result)

The output obtained is as shown below -

Hello World

Using "%" Formatting

In Python string formatting, placeholders like %s are used inside the string and replaced by values. To combine two strings, we just need to use two string place holders and print them as one.

Example

In the following example, we use %s to format and join two strings -

str1 = "Hello"
str2 = "World"

result = "%s %s" % (str1, str2)
print(result)

The result produced is as follows -

Hello World

Using format() Method

The format() method is also used to insert values into a string using curly braces {}. To combine two strings, we need to invoke the format() method on the string "{} {}", by passing the desired strings as parameters.

Example

In the following example, we use the format() method to merge two strings.

str1 = "Hello"
str2 = "World"

result = "{} {}".format(str1, str2)
print(result)

Following is the output obtained -

Hello World