索引，字符串，列表

Question

浏览水果列表并在字符串“我将其添加到我们的产品中”中打印每个水果。参数是“作物名称（字符串）列表，没有返回值。

测试用例

crops = [‘apple’, ‘orange’, ‘banana’, ‘strawberry’]
daysWork(crops)

I added this apple to our produce
I added this orange to our produce
I added this banana to our produce
I added this strawberry to our produce

我的代码：

def daysWork(crops):
  for crop in crops:
    produce = crops[n]
  print 'I added this ' + str(produce) + ' to our produce'

我得到的错误是“错误是：n全局未找到名称。”

是否n没有为每个元素编制索引？

Answer 1

Python的for loop 语句实际上是for-each语句，which differs from what you're used to in C or Java. for crop in crops使用变量crops引用crop中的每个元素。

你想要的是：

for crop in crops:
    produce = crop