Python：根据条目的位置删除列表中的单个条目
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/33443163/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Python: Remove a single entry in a list based on the position of the entry
提问by
Is there an easy way to delete an entry in a list? I would like to only remove the first entry. In every forum that I have looked at, the only way that I can delete one entry is with the list.remove()function. This would be perfect, but I can only delete the entry if I know it's name.
有没有一种简单的方法可以删除列表中的条目？我只想删除第一个条目。在我看过的每个论坛中，我可以删除一个条目的唯一方法是使用该list.remove()功能。这将是完美的，但如果我知道它的名称，我只能删除该条目。
list = ['hey', 'hi', 'hello', 'phil', 'zed', 'alpha']
list.remove(0)
This doesn't work because you can only remove an entry based on it's name. I would have to run list.remove('hey'). I can't do this in this particular instance.
这不起作用，因为您只能根据名称删除条目。我不得不跑list.remove('hey')。在这种特殊情况下，我不能这样做。
If you require any additional information, ask.
如果您需要任何其他信息，请询问。
采纳答案by Hackaholic
These are methods you can try:
这些是您可以尝试的方法：
>>> my_list = ['hey', 'hi', 'hello', 'phil', 'zed', 'alpha']
>>> del my_list[0]
>>> my_list = ['hey', 'hi', 'hello', 'phil', 'zed', 'alpha']
>>> if 'hey' in my_list: # you're looking for this one I think
... del my_list[my_list.index('hey')]
...
>>> my_list
['hi', 'hello', 'phil', 'zed', 'alpha']
You can also use filter:
您还可以使用filter：
my_list = filter(lambda x: x!='hey', my_list)
Using list comprehension:
使用list comprehension：
my_list = [ x for x in my_list if x!='hey']
回答by RobertB
First of all, never call something "list" since it clobbers the built-in type 'list'. Second of all, here is your answer:
首先，永远不要调用“列表”，因为它破坏了内置类型“列表”。其次，这是你的答案：
>>> my_list = ['hey', 'hi', 'hello', 'phil', 'zed', 'alpha']
>>> del my_list[1]
>>> my_list
['hey', 'hello', 'phil', 'zed', 'alpha']
回答by Dimitris Fasarakis Hilliard
Lists work with positions, not keys(or names, whatever you want to call them).
列表与位置一起工作，而不是键（或名称，无论你想怎么称呼它们）。
If you need named accessto your data structure consider using a dictionary instead which allows access to its value by using keyswhich map to the values.
如果您需要对数据结构进行命名访问，请考虑使用字典，它允许通过使用keyswhich 映射到values.
d = {'hey':0, 'hi':0, 'hello':0, 'phil':0, 'zed':0, 'alpha':0}
del d['hey']
print(d) # d = {'alpha': 0, 'hello': 0, 'hi': 0, 'phil': 0, 'zed': 0}
Otherwise you will need to resort to index based deletion by getting the index of the element and calling del alist[index].
否则，您将需要通过获取元素的索引并调用del alist[index].
回答by flamenco
To add to the poll of answers..how about:
添加到答案投票中……怎么样：
>>> my_list = ['hey', 'hi', 'hello', 'phil', 'zed', 'alpha']
>>> my_list=my_list[1:]
>>> my_list
['hi', 'hello', 'phil', 'zed', 'alpha']
