简单的python循环字典

Question

我想在Python中循环这个字典,并打印键和值,我是Python的新手,互联网上的例子不起作用或打印错误.

那么我怎样才能正确循环下表并显示键/值？

letters = {
    "m":1, "n":1, "r":1, "M":1, "N":1, "R":1, "l":1, "L":1, "1":1,
    "3":1, "6":1, "7":1, "8":1, "0":1,
}

Answer 1

你可以使用items(),例如:

for k, v in letters.items():
  print k,v 

或者因为它是字典,迭代键,例如:

# uses iterator, as opposed to returning all the keys via .keys()
for k in letters:
  print k, letters[k]