Convert Python Tuple to String

A tuple is a collection of objects that is ordered and immutable. Tuples are sequences, just like lists. The differences between tuples and lists are that tuples cannot be changed, unlike lists, and tuples use parentheses, whereas lists use square brackets.

Converting a Python tuple to a String

There are three different ways we can convert a Python tuple to a string.

• Using a for loop.

• Using the Python join() method

• Using the functool.reduce() method

Using the for loop

In Python, we can easily iterate over the tuple elements using the for loop, and then we will append/add each element to the string object. In the example below, we will see how to convert the tuple to a string.

Example

To avoid the TypeError while concatenating, we have changed the type of the loop element before adding it to the string.

t = ('p', 'y', 't', 'h', 'o', 'n', ' ', 3, '.', 10, '.', 0 )
print("Input tuple: ", t)
print(type(t))

s = ''  # created en empty string 
for ele in t:
    s += str(ele)

print("String Output: ", s)
print(type(s))

Following is an output of the above code -

Input tuple:  ('p', 'y', 't', 'h', 'o', 'n', ' ', 3, '.', 10, '.', 0)
<class 'tuple'>
String Output:  python 3.10.0
<class 'str'>

Using the Python join() Method

To convert a Python tuple to a string, we will use the join() method. The join() is a Python string method that takes an iterable object like a tuple as its argument and returns a Python string joined using a string separator or delimiter.

Syntax

Following is the syntax of the join() method in Python -

str.join(iterable)

Example

Let's take an example and convert a Python tuple to a string.

t = ('p', 'y', 't', 'h', 'o', 'n' )
print("Input tuple: ", t)
print(type(t))

output = "".join(t)
print("String Output: ", output)
print(type(output))

Following is an output of the above code -

Input tuple:  ('p', 'y', 't', 'h', 'o', 'n')
<class 'tuple'>
String Output:  python
<class 'str'>

Example

The join() method will raise a TypeError if we apply the join() method to a tuple that contains mixed data types (string, float, and integer). To avoid this error, we need to convert all tuple elements to the string data type.

By using the map() function, we first converted all tuple elements to the string data type. Then it is passed to the join method.

t = ('p', 'y', 't', 'h', 'o', 'n', ' ', 3.10, '.', 0 )
print("Input tuple: ", t)
print(type(t))

output = "".join(map(str,t))
print("String Output: ", output)
print(type(output))

Following is an output of the above code -

Input tuple:  ('p', 'y', 't', 'h', 'o', 'n', ' ', 3.1, '.', 0)
<class 'tuple'>
String Output:  python 3.1.0
<class 'str'>

Using the functool.reduce() method

The reduce() function is available in the functools module, and it takes a function as its first argument and an iterable as its second argument.

Syntax

Following is the syntax of the functool.reduce() method in Python -

functools.reduce(function, iterable[, initializer])

Example

In the following example, we have converted the tuple into a string using the functools.reduce() method -

import functools
import operator

t = ('p', 'y', 't', 'h', 'o', 'n' )
print("Input tuple: ", t)
print(type(t))

output = functools.reduce(operator.add, t)
print("String Output: ", output)
print(type(output))

Following is an output of the above code -

Input tuple:  ('p', 'y', 't', 'h', 'o', 'n')
class 'tuple'>
String Output:  python
<class 'str'>