Eliannys Cermeño

Technical Analyst at Stratesys

less than 1 minute read

The principal difference is that range returns a Python list object and xrange returns an xrange object.

This means that xrange doesn’t actually generate a static list at run-time like range does. It creates the values as you need them with a special technique called yielding.

Additional information

In Python 2 there was both methods to generate a list of integers. In Python 3, there is no xrange, the range() function in python 3 is just a re-implementation of the xrange() of python 2.

In terms of functionality xrange and range are the exact same.

Other different

  • Memory consumption - The range() function takes more memory that use the xrange() function. The basic reason for this is the return type of range() is list and xrange() is xrange().

  • Speed - xrange is faster than the standard range function because this function only evaluates like a lazy evaluation, therefore is faster in implementation than range().

References

Range vs. xrange

Differences between range and xrange

Definition

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