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python中enumerate函数遍历元素用法分析

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Release： 2016-06-10 15:05:53

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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)]

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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']

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希望本文所述对大家Python程序设计有所帮助。

Related labels：

enumerate function python

source：php.cn

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