CODEWITHSUNDEEP
pythondictionarynested
Hasani
Hasani

Reputation: 3889

Why do I get this error: TypeError: tuple indices must be integers or slices, not str

I have a dict like this:

{'d': {'BidVolume1': 0, 'BidPrice1': 0.0, 'BidVolume2': 0, 'BidPrice2': 0.0, 'BidVolume3': 0, 'BidPrice3': 0.0, 'BidVolume4': 0, 'BidPrice4': 0.0, 'BidVolume5': 0, 'BidPrice5': 0.0, 'AskTotalVolume': 0}}

When I try this code

for key in r['d'].items() :
    print(key['BidTotalVolume'])

I get the following error message:

TypeError: tuple indices must be integers or slices, not str

What I am trying to do is to say to the program, give me the value of the item with the BidTotalVolume key.

How should I do that? Why do I get this error message?

Upvotes: 1

Views: 7605

Answers (3)

Jean-François Fabre
Jean-François Fabre

Reputation: 140196

r[d] is {'BidVolume1': 0, 'BidPrice1': 0.0, 'BidVolume2': 0, 'BidPrice2': 0.0, 'BidVolume3': 0, 'BidPrice3': 0.0, 'BidVolume4': 0, 'BidPrice4': 0.0, 'BidVolume5': 0, 'BidPrice5': 0.0, 'AskTotalVolume': 0} so it's a dictionary.

Now you're iterating on a dictionary like this:

for key in r['d'].items()

the key name is misleading. Here key is a tuple of keys & values. When trying to use [] on that tuple you get that error. You should access your data directly like this:

print(r['d']['BidTotalVolume'])

Upvotes: 1

Tojra
Tojra

Reputation: 683

As suggested in the comment, use for key, values in d.items(): as items () returns a tuple of (key, value). For only keys, you can use keys() and for only values , you can use values()

Upvotes: 0

Chris
Chris

Reputation: 16147

First, there doesn't appear to be a bidtotalvolume key in your dictionary.

Secondly what you're attempting to do here is more or less:

print(r['d'][key]['BidTotalVolume'])

You don't have 3 levels to your dictionary so that's never going to work.

I assume what you mean to do is:

for key, value in r.items():
    print(r[key]['BidTotalVolume'])

Which will fail because BidTotalVolume is not in your dictionary. But try it with any key that is in there and it should work.

Upvotes: 1

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