问：如何在 python 中使用相同键的两个字典中获取两个值

Question

i'm trying my code. I'm confused..How to combine these 2 dictionaries so that the value of the results is like this?

1 A 18
5 B 14
3 C 15
7 D 20

for code

d= {'A': 1, 'B': 5, 'C': 3, 'D': 7}
e= {'A': 18, 'B': 14, 'C': 15, 'D': 20}
for k,v in d.items():
    print (v)
for i,(k, v) in enumerate(e.items()):
    print(i,k, v)

i don't understand. Please help me. Thanks!

Answer 1

You can do this:

d = {'A': 1, 'B': 5, 'C': 3, 'D': 7}
e = {'A': 18, 'B': 14, 'C': 15, 'D': 20}

for k in sorted(d.keys() & e.keys()):
    print(d[k], k, e[k])

The & ensures that we only use the keys present in both d and e .

Note that we need the sorted call to ensure that the dict s are indexed alphabetically in the situation where the dict keys aren't alphabetically inserted in the first place.

Answer 2

d= {'A': 1, 'B': 5, 'C': 3, 'D': 7}

e= {'A': 18, 'B': 14, 'C': 15, 'D': 20}

for i in d.keys():

  print(d[i],i,e[i])

As the key in both dictionaries are same, so if you access one key you can easily access values from both the dictionaries and can print it in any order/format.

Answer 3

d= {'A': 1, 'B': 5, 'C': 3, 'D': 7} e= {'A': 18, 'B': 14, 'C': 15, 'D': 20} final_dictionary = {x: d.get(x, 0) + e.get(x, 0) for x in set(d).union(e)} print("final dictionary", str(final_dictionary))