python - 如何访问python列表并将其保存为字符串

Question

我想要一个包含三个列表数据的字符串

喜欢

 list_1 = ['Modified', 'Modified', 'Added', 'Added']
 list_2 = ['92', '92', '92', '92'] 
 list_3 = ['trunk/new','trunk', 'branch','oldpath']

我的字符串应该是这样的:

 "Modified/92 trunk/new 
  Modified/92 trunk
  Added/92 branch
  Added/92 oldpath"

如何添加这些列表得到这样的字符串？

Answer 1

您可以使用 str.join , zip还有一些string formatting这里:

>>> s =  '\n'.join('{0}/{1} {2}'.format(*x) for x in zip(list_1, list_2, list_3))
>>> print s
Modified/92 trunk/new
Modified/92 trunk
Added/92 branch
Added/92 oldpath

使用 itertools.starmap 的另一种选择:

>>> from itertools import starmap, izip
>>> f = '{0}/{1} {2}'.format
>>> print '\n'.join(starmap(f, izip(list_1, list_2, list_3)))
Modified/92 trunk/new
Modified/92 trunk
Added/92 branch
Added/92 oldpath

如果您只需要字符串用于打印目的，那么不要创建字符串，只需使用print() 函数:

>>> from __future__ import print_function  #Required in Python 2
>>> print(*starmap(f, izip(list_1, list_2, list_3)), sep='\n')
Modified/92 trunk/new
Modified/92 trunk
Added/92 branch
Added/92 oldpath