Python xrange() Function |

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Python2.x Python xrange() Function

Python Built-in Functions

xrange() is a function in Python 2 used to generate a sequence of numbers.

The usage of the xrange() function is identical to range, except that it generates a generator instead of an array.

Note: In Python 3, xrange() has been removed, the range() function has been improved, and it possesses all the functionality and features of xrange(). In other words, the range() function in Python 3 lazily generates sequences, so xrange() is no longer needed.

Syntax

xrange syntax:

xrange(stop)
xrange(start, stop[, step])

Parameter explanation:

start: The count starts from start. By default, it starts from 0. For example, xrange(5) is equivalent to xrange(0, 5)
stop: The count ends at stop, but does not include stop. For example: xrange(0, 5) is [0, 1, 2, 3, 4], without 5
step: The step value, default is 1. For example: xrange(0, 5) is equivalent to xrange(0, 5, 1)

Return Value

Returns a generator.

Example

The following examples demonstrate the usage of xrange:

>>>xrange(8)
xrange(8)
>>>list(xrange(8))
[0, 1, 2, 3, 4, 5, 6, 7]
>>>range(8) # range usage
[0, 1, 2, 3, 4, 5, 6, 7]
>>>xrange(3, 5)
xrange(3, 5)
>>>list(xrange(3,5))
[3, 4]
>>>range(3,5) # using range
[3, 4]
>>>xrange(0,6,2)
xrange(0, 6, 2) # step is 2
>>>list(xrange(0,6,2))
[0, 2, 4]
>>>