Question

嗨，我是python的新手，正努力在for循环中创建for循环。我希望底部的三行循环播放。非常感谢！

for restaurant in sorted_list:
    wks_res.append_row([
        restaurant["name"],
        restaurant["rating"],
        restaurant["user_ratings_total"],
        restaurant['reviews'][0]['text'],
        restaurant['reviews'][1]['text'],
        restaurant['reviews'][2]['text'],
])

我尝试的方法如下：

for restaurant in sorted_list:
   wks_res.append_row([
       restaurant["name"],
       restaurant["rating"],
       restaurant["user_ratings_total"],
       for reviews in restaurant['reviews']:
          reviews['text'],

])

Answer 1

这应该有效。当心那些括号，它们是故意重新排列的。在Internet上查看列表理解，以了解有关此的更多信息。

for restaurant in sorted_list:
   wks_res.append_row([
       restaurant["name"],
       restaurant["rating"],
       restaurant["user_ratings_total"]] +
       [rev["text"] for rev in restaurant["reviews"]]

)

Answer 2

您不能在表达式内使用for循环。

这应该有效：

for restaurant in sorted_list:
   # create the list to append
   row = [
       restaurant["name"],
       restaurant["rating"],
       restaurant["user_ratings_total"]
   ]
   # expend this list with 'reviews'
   for review in restaurant['reviews']:
          row.append(review['text'])
   # append the list to wks_res
   wks_res.append_row(row)

或者您可以使用list comprehension

row = [
   restaurant["name"],
   restaurant["rating"],
   restaurant["user_ratings_total"]
] + [review['text'] for review in restaurant['reviews']]

Answer 3

谢谢！这确实有效：

for restaurant in sorted_list:
   wks_res.append_row([
      restaurant["name"],
      restaurant["rating"],
      restaurant["user_ratings_total"]] +
      [rev["text"] for rev in restaurant["reviews"]]

）

for循环中的for循环获取无效语法

3 个答案: