Developer & Packages
PyPI Username Availability Checker
PyPI is the official third-party software repository for Python packages.
PyPI Username Rules & Requirements
Before selecting your username, ensure it conforms to PyPI’s official account registration guidelines:
| Minimum Length | 1 characters |
|---|---|
| Maximum Length | 50 characters |
| Allowed Characters | Alphanumeric letters, underscores, and hyphens |
| Special Restrictions | Used to upload and maintain Python packages via pip. |
| Public Profile URL | https://pypi.org/user/{username}/ |
| Official Registration Page | https://pypi.org/account/register/↗ |
How to Claim or Change Your Username on PyPI
1
Check Availability
Use the input above to confirm your handle satisfies all formatting constraints and character limits.
2
Visit Official Page
Click the "Claim on PyPI" button to navigate directly to the verified sign up or profile settings.
3
Secure & Save
Complete registration immediately to prevent automated bots or squatters from claiming your handle.
What to Do If Your Desired PyPI Handle Is Already Taken
Ideal for Python library authors to secure author attribution on published libraries.