How do I make a string all lowercase in Python?
We can use Python’s built-in str.lower()
(https://docs.python.org/3/library/stdtypes.html#str.lower) method. This will work regardless of how many uppercase letters the string contains. For example:
print("HELLO WORLD!".lower()) # will output "hello world!" print("Hello World!".lower()) # will output "hello world!" print("hello world!".lower()) # will output "hello world!"
If we’re making our string all lowercase in order to do case-insensitive matching, we may want to use str.casefold()
instead. This method is a more aggressive form of str.lower()
, which includes additional substitutions such as “ss” for the German character “ß”. The workings of this method are implemented in accordance with section 3.13 of the Unicode Standard.
Get actionable, code-level insights to resolve Python performance bottlenecks and errors.
Create a free Sentry account
Create a Python project and note your DSN
Grab the Sentry Python SDK
pip install --upgrade sentry-sdk
import sentry_sdk sentry_sdk.init( "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, )
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.