Python：for 循环内的 print()
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Python: for loop inside print()
提问by SomeOne
I have a question about Python (3.3.2).
我有一个关于 Python (3.3.2) 的问题。
I have a list:
我有一个清单：
L = [['some'], ['lists'], ['here']]
I want to print these nested lists (each one on a new line) using the print()function:
我想使用以下print()函数打印这些嵌套列表（每个列表都在一个新行上）：
print('The lists are:', for list in L: print(list, '\n'))
I know this is incorrect but I hope you get the idea. Could you please tell me if this is possible? If yes, how?
我知道这是不正确的，但我希望你能明白。你能告诉我这是否可能吗？如果是，如何？
I know that I could do this:
我知道我可以这样做：
for list in L:
print(list)
However, I'd like to know if there are other options as well.
但是，我想知道是否还有其他选择。
采纳答案by Martijn Pieters
Apply the whole Lobject as separate arguments:
将整个L对象作为单独的参数应用：
print('The lists are:', *L, sep='\n')
By setting septo a newline this'll print all list objects on new lines.
通过设置sep换行符，这将在新行上打印所有列表对象。
Demo:
演示：
>>> L = [['some'], ['lists'], ['here']]
>>> print('The lists are:', *L, sep='\n')
The lists are:
['some']
['lists']
['here']
If you haveto use a loop, do so in a list comprehension:
如果必须使用循环，请在列表推导式中使用：
print('The lists are:', '\n'.join([str(lst) for lst in L]))
This'll omit the newline after 'The lists are:', you can always use sep='\n'here as well.
这将省略 之后的换行符'The lists are:'，您也可以随时sep='\n'在此处使用。
Demo:
演示：
>>> print('The lists are:', '\n'.join([str(lst) for lst in L]))
The lists are: ['some']
['lists']
['here']
>>> print('The lists are:', '\n'.join([str(lst) for lst in L]), sep='\n')
The lists are:
['some']
['lists']
['here']
回答by SomeOne
This works:
这有效：
>>> L = [['some'], ['lists'], ['here']]
>>> print("\n".join([str(x) for x in L]))
['some']
['lists']
['here']
>>>
回答by Nurul Akter Towhid
work for me:
为我工作：
L = [['some'], ['lists'], ['here']]
print("\n".join('%s'%item for item in L))
this one also work:
这个也有效：
L = [['some'], ['lists'], ['here']]
print("\n".join(str(item) for item in L))
this one also:
这也是：
L = [['some'], ['lists'], ['here']]
print("\n".join([str(item) for item in L]))
回答by user8892564
If anyone looking for help in dict printing then here u go:
如果有人在 dict 打印方面寻求帮助，那么你就在这里：
dictionary = {'test1':'value1', 'test1':'value1'}
print ('\n'.join(' : '.join(b for b in a) for a in dictionary.items()))
