python中enumerate函数遍历元素用法分析

本文实例讲述了python中enumerate函数遍历元素用法。分享给大家供大家参考，具体如下：

enumerate函数用于遍历序列中的元素以及它们的下标

示例代码如下：

    i = 0
    seq = ['one', 'two', 'three']
    for element in seq:
      print i, seq[i]
      i += 1
    #0 one
    #1 two
    #2 three
    print '============'
    seq = ['one', 'two', 'three']
    for i, element in enumerate(seq):
      print i, seq[i]
    print '============'
    for i,j in enumerate('abc'):
      print i,j
    #0 a
    #1 b
    #2 c
    print '============'
    def _treatment(pos, element):
      return '%d: %s' %(pos, element)
    seq = ['one', 'two', 'three']
    print [_treatment(i, e1) for i, e1 in enumerate(seq)]

运行结果如下：

    0 one
    1 two
    2 three
    ============
    0 one
    1 two
    2 three
    ============
    0 a
    1 b
    2 c
    ============
    ['0: one', '1: two', '2: three']

希望本文所述对大家Python程序设计有所帮助。