用Python方式打印列表项 [英] Pythonic way to print list items

问题描述

我想知道是否有比这更好的方法来打印Python列表中的所有对象:

I would like to know if there is a better way to print all objects in a Python list than this :

myList = [Person("Foo"), Person("Bar")]
print("\n".join(map(str, myList)))
Foo
Bar

我这样读不是很好:

myList = [Person("Foo"), Person("Bar")]
for p in myList:
    print(p)

没有类似的东西:

print(p) for p in myList

如果没有，我的问题是...为什么?如果我们可以使用综合列表来完成这类工作，为什么不将其作为列表之外的简单语句呢?

If not, my question is... why ? If we can do this kind of stuff with comprehensive lists, why not as a simple statement outside a list ?

推荐答案

假设您使用的是Python 3.x:

Assuming you are using Python 3.x:

print(*myList, sep='\n')

mgilson在注释中指出，您可以使用from __future__ import print_function在Python 2.x上获得相同的行为.

You can get the same behavior on Python 2.x using from __future__ import print_function, as noted by mgilson in comments.

使用Python 2.x上的print语句，您需要某种形式的迭代，关于您关于print(p) for p in myList无效的问题，您可以使用以下代码做同样的事情，并且仍然是一行:

With the print statement on Python 2.x you will need iteration of some kind, regarding your question about print(p) for p in myList not working, you can just use the following which does the same thing and is still one line:

for p in myList: print p

对于使用'\n'.join()的解决方案，相对于map()，我更喜欢列表推导和生成器，因此我可能会使用以下内容:

For a solution that uses '\n'.join(), I prefer list comprehensions and generators over map() so I would probably use the following:

print '\n'.join(str(p) for p in myList) 

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