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Convert a list to a string in Python

David Y.

The Problem

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:

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:

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

print(my_string) # will output "13 7 42"

Get Started With Sentry

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  3. Grab the Sentry Python SDK

pip install --upgrade sentry-sdk
  1. Configure your DSN
import sentry_sdk

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    "https://<key>@sentry.io/<project>",

    # Set traces_sample_rate to 1.0 to capture 100%
    # of transactions for performance monitoring.
    # We recommend adjusting this value in production.
    traces_sample_rate=1.0,
)

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