python xrange

The following are the details of the "collation": The First looks at the following example: >>> x=xrange (0,8) >>>  print x Xrange (8) >>> print x[0] 0 >>> print x[7] 7 > >> print x[8] Traceback (most recent call last)

Whether range () or xrange () is a built-in function in Python. The two built-in functions are most commonly used in the For loop. Range () and xrange () are two different implementations in Python 2. But in Python 3, the implementation of range ()

These two are basically used at the time of the cycle. forIinchRange0, -):p rint i forIinchXrange0, -):p rint I the results of both outputs are the same, in fact there are many differences, and range generates a list object directly: a= Range (0, -)

Believe that many people on xrange and yield are not very clear, many articles on the web is also written foggy, today I use the simplest example to everyone said.Talk about xrange When you must mention range, in fact xrange usage and range exactly

1.range () function:Function Description: Range ([Start,] stop[, step]), which generates a sequence based on the range specified by start and stop and step set by step.>>>#The range () function does not support 0 parameters... >>>range () Traceback (

One, two functions of the document:1,xrange (): xrange ( stop ) xrange ( start, stop[, step] ) This function was very similar to range () , but returns an Xrange

Let's take a look at the usage of range and xrangeHelp (Range)Help on built-in function range in module __builtin__:Range (...)Range (stop), List of integersRange (start, stop[, Step), List of integersReturn a list containing an arithmetic

RangeFunction Description: Range ([Start,] stop[, step]), which generates a sequence based on the range specified by start and stop and step set by step.Range Example: >>> Range(5) [0, 1, 2, 3, 4] >>> Range(1,5) [1, 2, 3, 4

RangeFunction Description: Range ([Start,] stop[, step]), generating a sequence (list)based on the range specified by start and stop and step set by step.>>> Range (51, 2, 3, 4>>> range (1,5) [1, 2, 3, 4>>> range ( 0,6,22, 4]XrangeFunction

Range Function Description: Range ([Start,] stop[, step], which generates a sequence based on the range specified by start and stop, and steps that are set. Range Example: The code is as follows Copy Code >>> Range (5)[