Sentry Answers>Python>

Check if a dictionary contains a key in Python

Check if a dictionary contains a key in Python

David Y.

The ProblemJump To Solution

How can I check whether a Python dictionary contains a given key?

The Solution

You can do this using Python’s in operator. When used with a dictionary, this will check its keys. For example:

Click to Copy
prices = { "Apples": 1, "Oranges": 2 } if "Oranges" in prices: print('prices dictionary contains key "Oranges"') if "Pineapples" not in prices: print('prices dictionary does not contain key "Pineapples"')
  • 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. Get tips and tricks from Wes Bos and Scott Tolinski.

    SEE EPISODES

Loved by over 4 million developers and more than 100,000 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.

© 2024 • Sentry is a registered Trademark
of Functional Software, Inc.