[英]iterate over two lists using a while loop instead of a for loop
colours = ["red", "green", "blue"]
clothes = ["shirt", "dress", "pants", "jacket", "hat"]
for colour_item in colours:
for clothes_item in clothes:
print("I am wearing a ",colour_item," ",clothes_item)
这是我试图更改为 while 循环以产生所有结果的代码,即 15 个结果,while 循环我能得到的最好结果是 3。
您可以尝试使用 while 循环,同时为每个列表保留一个索引计数器变量,尽管它本质上只是一个 for 循环:
colours = ["red", "green", "blue"]
clothes = ["shirt", "dress", "pants", "jacket", "hat"]
colorIndex = 0
while(colorIndex < len(colours)):
clothesIndex = 0
while(clothesIndex < len(clothes)):
print("I am wearing a",colours[colorIndex],clothes[clothesIndex])
clothesIndex += 1
colorIndex += 1
Output:
I am wearing a red shirt
I am wearing a red dress
I am wearing a red pants
I am wearing a red jacket
I am wearing a red hat
I am wearing a green shirt
I am wearing a green dress
I am wearing a green pants
I am wearing a green jacket
I am wearing a green hat
I am wearing a blue shirt
I am wearing a blue dress
I am wearing a blue pants
I am wearing a blue jacket
I am wearing a blue hat
如果您愿意做一点数学运算,可以在一个while
循环中完成。
colours = ["red", "green", "blue"]
clothes = ["shirt", "dress", "pants", "jacket", "hat"]
n = 0
l = len(clothes)
while n < len(colours) * len(clothes):
print(f"I am wearing a {colours[n // l]} {clothes[n % l]}")
n += 1
哪个打印出预期的:
I am wearing a red shirt
I am wearing a red dress
I am wearing a red pants
I am wearing a red jacket
I am wearing a red hat
I am wearing a green shirt
I am wearing a green dress
I am wearing a green pants
I am wearing a green jacket
I am wearing a green hat
I am wearing a blue shirt
I am wearing a blue dress
I am wearing a blue pants
I am wearing a blue jacket
I am wearing a blue hat
colours = ["red", "green", "blue"]
clothes = ["shirt", "dress", "pants", "jacket", "hat"]
i=0
while i<len(colours):
j=0
colour_item = colours[i]
while j<len(clothes):
clothes_item = clothes[j]
print("I am wearing a ",colour_item," ",clothes_item)
j+=1
i+=1
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