Python： 遍历，,==========

Python： 遍历，,==========

======================遍历列表========================
# 直接遍历list：

for elem in list:     pass

# 通过索引获取

for i in range(len(list)):     elem = list[i]     pass

# 基于enumerate()遍历

for i, elem in enumerate(list):     pass

# 基于iter()遍历

listIter = iter(list)while True:     try:          elem = listIter.next()          # ....     expect StopIteration, ex:          // NOOP

=====================遍历dict==========================
# 通过key遍历

for key in dict.keys():     value = dict.get(key)     pass

# 直接遍历，本质是先转换成 (key,value)的list

for key,value in dict.items():     pass

# iteritems() 返回值是 items的迭代器

for key,value in dict.iteritems():     pass

Python： 遍历