range()、xrange()函数实现，rangexrange,# -*- coding

range()、xrange()函数实现，rangexrange,# -*- coding

# -*- coding:utf-8 -*-__author__ = 'kiven''''实现python range函数'''def my_range(start, stop=None, step=None):    result = []    s = 1  # 步长    if not step is None:        s = step    if not stop is None:        while True:            if start < stop:                result.append(start)                start += s            else:                break    else:        stop,start = start,0        while True:            if start < stop:                result.append(start)                start += s            else:                break    return resultprint my_range(1,10,4)print range(1,10,4)