遍历Python中的列表列表 [英] Iterating through list of list in Python
本文介绍了遍历Python中的列表列表的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我想遍历列表列表.
我也想遍历list中不规则嵌套的列表.
谁能告诉我该怎么做?
I want to iterate through list of list.
I want to iterate through irregularly nested lists inside list also.
Can anyone let me know how can I do that?
x = [u'sam', [['Test', [['one', [], []]], [(u'file.txt', ['id', 1, 0])]], ['Test2', [], [(u'file2.txt', ['id', 1, 2])]]], []]
推荐答案
此traverse
生成器函数可用于遍历所有值:
This traverse
generator function can be used to iterate over all the values:
def traverse(o, tree_types=(list, tuple)):
if isinstance(o, tree_types):
for value in o:
for subvalue in traverse(value, tree_types):
yield subvalue
else:
yield o
data = [(1,1,(1,1,(1,"1"))),(1,1,1),(1,),1,(1,(1,("1",)))]
print list(traverse(data))
# prints [1, 1, 1, 1, 1, '1', 1, 1, 1, 1, 1, 1, 1, '1']
for value in traverse(data):
print repr(value)
# prints
# 1
# 1
# 1
# 1
# 1
# '1'
# 1
# 1
# 1
# 1
# 1
# 1
# 1
# '1'
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