Simple Nested loop?

Question

Simple question regarding nested loops.

stocks = {'GE': 6.28, 'XOM': 39.8}
for quote in stocks.values():
    print(quote)

    for symbol in stocks.keys():
        print(symbol)

        print('You have purchased', symbol, 'for', quote)

Output:

GE
You have purchased GE for 39.8
XOM
You have purchased XOM for 39.8

Why does it state that GE was purchased at 39.8 and not 6.28? I tried to indent and dedent the loop code but to no luck. Please help?

That is not the full output, which would very clearly show that the values and keys are iterated separately. — MisterMiyagi, Sep 01 '20 at 17:39

score 1 · Answer 1 · answered Sep 01 '20 at 17:37

1

If you're trying to print the key and value of a dict, then just unpack both in one for loop:

for symbol, quote in stocks.items():
    print(symbol)
    print('You have purchased', symbol, 'for', quote)

answered Sep 01 '20 at 17:37

S.Chauhan

156
2
8

score 1 · Accepted Answer · answered Sep 01 '20 at 17:37

1

Dictionaries are not (typically) ordered.

You will need to print in the same order as you traverse:

for k, v in stocks.items():
    print(k)
    print('You have purchased', k, 'for', v)

answered Sep 01 '20 at 17:37

JacobIRR

8,545
8
39
68

score 1 · Answer 3 · answered Sep 01 '20 at 17:39

1

This is the recommended iteration for dictionaries in python.

stocks = {'GE': 6.28, 'XOM': 39.8}
for key,value in stocks.items():
  print('You have purchased', key, 'for', value)

answered Sep 01 '20 at 17:39

Jon Cokisler

13
3

Simple Nested loop?

3 Answers3