Sentry Answers>Python>

Convert a list to a string in Python

Convert a list to a string in Python

David Y.

—

The ProblemJump To Solution

How can I convert a list to a string in Python?

The Solution

We can do this using Python’s str.join() method. This method takes an iterable, such as a list, and returns a new string containing the iterable’s elements, concatenated with the original string as a separator. Consider the following examples:

Click to Copy
fullname = " ".join(["John","Smith"])
print(fullname)  # will output "John Smith"

firstname = "".join(["J","o","h","n"])
print(firstname)  # will output "John"

fullname_alt = ", ".join(["Smith","John"])
print(fullname_alt)  # will output "Smith, John"

If the list contains any non-string items, this method will raise a TypeError, so we may need to cast items to strings before using it. We can do this with a list comprehension:

Click to Copy
my_numbers = [13, 7, 42]
my_string = " ".join([str(number) for number in my_numbers])

print(my_string) # will output "13 7 42"
  • Sentry BlogPython Performance Testing: A Comprehensive Guide
  • Sentry BlogLogging in Python: A Developer’s Guide
  • Syntax.fm logo
    Listen to the Syntax Podcast

    Tasty Treats for Web Developers brought to you by Sentry. Web development tips and tricks hosted by Wes Bos and Scott Tolinski

    Listen to Syntax

Loved by over 4 million developers and more than 90,000 organizations worldwide, Sentry provides code-level observability to many of the world’s best-known companies like Disney, Peloton, Cloudflare, Eventbrite, Slack, Supercell, and Rockstar Games. Each month we process billions of exceptions from the most popular products on the internet.

learn more about sentryjoin our discord
© 2024 • Sentry is a registered Trademark
of Functional Software, Inc.