Python Library Reference

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6.1.7 Miscellaneous Functions

urandom(

n)

Return a string of n random bytes suitable for cryptographic use.

This function returns random bytes from an OS-specific randomness source. The returned data should be unpredictable enough for cryptographic applications, though its exact quality depends on the OS implementation. On a UNIX-like system this will query /dev/urandom, and on Windows it will use CryptGenRandom. If a randomness source is not found, NotImplementedError will be raised. New in version 2.4.

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Python Library Reference

Previous: 6.1.6 Miscellaneous System Information Up: 6.1 os Next: 6.2 os.path

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Release 2.4, documentation updated on 30 November 2004.