python同时遍历两个list用法说明

 dict_1 = {}
 list_1 = ['a','b','c']
 list_2 = ['1','2','3']
 """ zip打包用法,同时遍历两个list """
 for symbol,digit in zip(list_1,list_2):
  dict_1[symbol] = digit 

def redirect_back(default='hello', **kwargs):
  for target in request.args.get('next'), request.referrer:
    if not target:
      continue
    if is_safe_url(target):
      return redirect(target)
  return redirect(url_for(default, **kwargs))

>>> for target in [1,2,3], [7,8,9]:
...   print(target)
... 
[1, 2, 3]
[7, 8, 9]

>>> for target in [1,2,3],["wangba",8,9],'hello':
...   print(target)
... 
[1, 2, 3]
['wangba', 8, 9]
hello