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Python 如何将代码转换为列表?_Python_List_Dictionary_List Comprehension - Fatal编程技术网

Python 如何将代码转换为列表?

Python 如何将代码转换为列表?,python,list,dictionary,list-comprehension,Python,List,Dictionary,List Comprehension,我有简单的代码,我只想把它转换成列表理解,我们怎么做 data=['Resaurants', 'Vibes', 'Drinks',18] Invalid_Data=[] Valid_Data=[] for i in data: if i not in new_dict: Invalid_Data.append(i) if i in list(new_dict.keys()): Valid_Data.append(i) 在列表中(new_dict.

我有简单的代码,我只想把它转换成列表理解,我们怎么做

data=['Resaurants', 'Vibes', 'Drinks',18]
Invalid_Data=[]
Valid_Data=[]
for i in data:
    if i not in new_dict:
        Invalid_Data.append(i)
    if i in list(new_dict.keys()):
        Valid_Data.append(i)
在列表中(new_dict.keys())
是一种糟糕的检查字典中是否有某个键的方法,因为每次你都在构造一个不必要的列表,然后检查它是否包含该键比只检查字典中是否有键要慢。在新的目录中应该是

因此,请列出理解:

invalid_data = [x for x in data if x not in new_dict]
valid_data = [x for x in data if x in new_dict]

列表中的
(new_dict.keys())
是检查字典中某个内容是否为键的糟糕方法。应该是新目录中的
。编辑后,您可以通过将其转换为列表的方式发送给我。理解StackOverflow不是免费的编码服务。你需要做一个调查,然后在必要时问一些具体的问题。