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How To Convert A List Of Characters Into A String In Python - LearnShareIT

How To Convert A List Of Characters Into A String In Python

Convert a list of characters into a string in Python

To convert a list of characters into a string in Python, you can use the join() method, str() method and map() method. Follow the article to better understand.

What is a list in Python?

In Python, a list is a sequence of values. In the string data type, the values are characters. Whereas with list type, values can be of any data type when called. Each value in the list is called an element.

What is a string in Python?

In Python, strings are byte arrays representing a sequence of Unicode characters. Since Python has no character data type, a character is simply a string of length 1. It can be understood as a computer. Don’t handle characters, and they deal with (binary) numbers. So although you may see a lot of information on the screen, they are actually stored and manipulated as a combination of 0 and 1. Strings are immutable data types in Python, when a string is created, the replacement is impossible to change it. You can use single, double, or triple quotes to create strings in Python.

Convert a list of characters into a string in Python

Use the join() method

For ‘list’ whose elements are of data type ‘string’ you can use the ‘join‘ method to concatenate the elements of that list and convert that list to ‘string’.

Syntax:

str.join(iterable)

In this:

  • ‘str’ is the partition character used to connect string
  • ‘join’ is the method name
  • ‘iterable’ is a list or tuple containing elements that are strings to be concatenated.

Example:

myList = ['M','y','n','a','m','e','i','s','J','o','h','n']

# Use the join() function to convert a list of characters into a string
newStr = "".join(myList)
print(newStr)

Output:

MynameisJohn

In the above example, I declare a list, then use the ‘join’ method to concatenate the elements of that list and convert this list to ‘string’.

Note:

The ‘join()’ method can only convert elements of type ‘string’ of ‘list’ to ‘string’.

Use List Comprehension

You can use list comprehension as a parameter to the join() function to convert a list of characters into a string.

Example:

myList = ['M','y','n','a','m','e','i','s','J','o','h','n']

# Use the join() function to convert a list of characters into a string
newStr = "".join([str(char) for char in myList])
print(newStr)

Output:

MynameisJohn

List Comprehension here is almost equivalent, replacing the loop. It converts each letter and digit as string (by str() function) in the list ‘myList’ and returns the result as a new list. The join() function takes this list as a parameter; the result will be a string of characters.

Use the map() function as join() function parameter

The map() function in Python converts the elements of the specified list to strings and creates an iterator. We then also use the join() method to retrieve and concatenate the strings that are the elements of this iterator to produce the resulting string.

We can use this approach for list including both string and number.

Syntax:

map(function, iterable, ...)

Parameters:

  • function: The function to execute for each element in the iterable.
  • iterable: a list, tuple, dictionary… want to browse.

Example:

myList = ['M','y','n','a','m','e','i','s','J','o','h','n']

# Use the map() function as join() function parameter
newStr = "".join(map(str, myList))
print(newStr)

Output:

MynameisJohn

In the example above the map() function in Python converts the elements of the specified list to strings and creates an iterator. Then use the join() method to retrieve and concatenate the strings that are the elements of this iterator to produce the resulting string.

Summary

There are many methods to convert a list of characters into a string in Python. Here are some solutions to resolve it. Find the best way that works for you. We hope this tutorial is helpful to you. Thanks!

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