Convert list with one element to int python

In this tutorial, well look at how to convert a python list to a string.

How to convert a python list to a string?

You can use the string join[] function in a list comprehension to easily create a string from the elements of the list. The following is the syntax:

s = ''.join[str[i] for i in ls]

Here, we iterate through the elements of the list ls converting each to a string object using list comprehension and then join the elements into a string using the string join[] method. For more details on the join[] method, refer to this guide.

Examples

Lets look at a few examples.

1. List of string to string

To get a single string from a list of strings, you can use the syntax above. But, since all the items in the list are already string, you dont need to explicitly convert them into a string. See the example below.

ls = ['a', 'e', 'i', 'o', 'u'] s = ''.join[ls] print[s]

Output:

aeiou

In the above example, you can see that we directly passed the list to the join[] function without converting each item to string. This was possible because the items in the list were already string.

2. List of integers to string

To get a string from a list of integers, you need to explicitly convert each list item to a string [for example, in a list comprehension] before applying the join[] function. See the example below.

ls = [1, 2, 3, 4] s = ''.join[str[i] for i in ls] print[s] print[type[s]]

Output:

1234

In the above example, the string s is created from the items of the list ls containing integer items.

If youre not sure about the types of items in the list, its better to convert them to string and then pass it to the join[] function which is used to join string objects.

3. List to string with each item on newline

You can use a custom string to join the items in the list. The above examples used an empty string to join the items but you use any other string like a whitespace ' ', newline character '\n', etc as well. See the example below.

ls = [1, 2, 3, 4] s = '\n'.join[str[i] for i in ls] print[s]

Output:

1 2 3 4

Here, we use a newline character '\n' to join the list. The resulting string has each item of the list separated by a newline character.

For more on the python string join[] function, refer to the python docs.