如何在删除换行符的同时遍历dict？

Question

我尝试遍历字典并删除换行符，并且在解析条目时遇到困难。你知道吗

说我们有

line_contents = {"user_id": "6GrH6gp09pqYykGv86D6Dg", "text": "Decent selection of more than just bar food. \n\nJumbo fish sandwich is aptly named. \n\nSeem to be generous with the pour.", "business_id": "fNGIbpazjTRdXgwRY_NIXA", "likes": 0, "date": "2013-04-22", "type": "tip"}

#I've tried:
line_contents=dict(map(strip(),x) for x in line_contents.items())
#but ^ doesn't work. I can't figure out how the map function or the dictionary comprehension works

#I eventually want:
line_contents = {"user_id": "6GrH6gp09pqYykGv86D6Dg", "text": "Decent selection of more than just bar food. Jumbo fish sandwich is aptly named. Seem to be generous with the pour.", "business_id": "fNGIbpazjTRdXgwRY_NIXA", "likes": 0, "date": "2013-04-22", "type": "tip"}

我很想用一个典型的for循环遍历dictionary元素，但我想尝试dict理解，因为我从来没有这样做过。你知道吗

Answer 1

你可以使用dict理解，但由于你的一些值不是字符串，你必须考虑到这一点：

line_contents = {k: v.replace('\n', '') if isinstance(v, str) else v for k, v in line_contents.items()}

如果键和值都包含换行符，可以使用dict内置：

line_contents = dict([y.replace('\n', '') if isinstance(y, str) else y for y in x] 
                     for x in line_contents.items())

当然，听写理解仍然有效，但看起来相当混乱：

line_contents = {k: v for k, v in
                 ([y.replace('\n', '') if isinstance(y, str) else y for y in x]
                  for x in line_contents.items())
                 }