python - 列表的循环列表

Question

我需要一些帮助来遍历列表列表。我还在学习 Python。

我有一个整数列表，这些整数是更多整数的列表。

例子：

itemWalmart= "food","bread"
itemCostco= "furniture","electronics"
superMarket= walmart,costco

我需要创建一个循环列出项目 + superMarket.Name ，我的问题是当我们向列表中添加更多超级市场和更多项目时。

我想创建一个循环，即使列表增长它也会这样做，所以它会遍历每一个。

列表更大的示例：

itemWalmart= "food","bread"
itemCostco= "furniture","electronics"
itemSoriana= "milk","chocolate"
superMarket= itemWalmart,itemCostco,itemSoriana

我正在尝试的是：

itemWalmart= "food","bread"
itemCostco= "furniture","electronics"
superMarket= itemWalmart,itemCostco

print superMarket

for i in superMarket:
    print i + superMarket 

我明白了：

# (('food', 'bread'), ('furniture', 'electronics'))
# ('food', 'bread', ('food', 'bread'), ('furniture', 'electronics'))
# ('furniture', 'electronics', ('food', 'bread'), ('furniture', 'electronics'))

我想得到这个：

"food","bread" , itemWalmart
"furniture","electronics" , itemCostco

谢谢

Answer 1

你会更容易使用字典。

markets = {}

markets['Walmart'] = "food","bread"
markets['Costco'] = "furniture","electronics"

for k,v in markets.iteritems():  #use items if you are using python 3x
    print k,v

Answer 2

itemWalmart= "food","bread"
itemCostco= "furniture","electronics"
superMarketItems= itemWalmart,itemCostco
superMarketNames = "walmart","costco"

for items,name in zip(superMarketItems,superMarketNames):
  print "Items:",items," Found@",name

Answer 3

不幸的是，你不能用列表来做到这一点。itemWalmart是一个变量名，并且没有强附加到变量。（并且不可检索，特别是因为它已被复制到i）。

我建议使用字典：

markets={}
markets['walmart']=('food','bread')
markets['costco']='furniture,electronics'

for key,value in markets.iteritems():
   print (key,value)

---

如果您真的想使用列表，请将市场名称与列表一起存储。

itemWalmart= "food","bread","itemWalmart"
itemCostco= "furniture","electronics","itemCostco"
superMarket= itemWalmart,itemCostco

print superMarket

for i in superMarket:
    print i

Answer 4

我不知道这是否可行，但试试这个，我不知道 python，但我认为这个逻辑可行

for i in superMarket: for x in superMarket[i]: print superMarket[i][x] print superMarket

我不确定如何在 python 中添加“以进行回显