Embedded Dictionary Output

Asked May 19 '20 at 16:44

Active May 19 '20 at 16:45

Viewed 18 times

I was wondering if someone could explain to me why my code produces "mixed results".

Essentially the script gets a ticker id and within that dictionary, it attaches the current price and the currency type e.g USD, GBp etc.

tickerDict[result[row]] = {currentPriceData , currencyType[37:]}

Essentially the output I would like is Ticker, Price, Currency. But I noticed when looking at the output in excel the price and currency could be mixed for example:

Ticker, Price Currency
ABC,5,USD
DCD,5,EUR
ADF,USD,5
FGA,5,GBP
AFA,GBp,5

I fixed the code by using the following Line

tickerDict[result[row]] = {currentPriceData : currencyType[37:]}

However, just for my better understanding of how code works why was the first method returning results in different orders?

edited May 19 '20 at 16:45

jonrsharpe

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asked May 19 '20 at 16:44

JPWilson

2

Sets aren't ordered data structures. – jonrsharpe May 19 '20 at 16:46
@jonrsharpe in general yes... however Python 3.6+ dictionaries do have order https://stackoverflow.com/a/39980744/5521670. – Šimon Kocúrek May 19 '20 at 16:48
@ŠimonKocúrek in more recent versions they retain insertion order, they still aren't *semantically* ordered. In this case a tuple or list would be a far better choice even in versions where a set works. – jonrsharpe May 19 '20 at 16:49
@jonrsharpe that is correct. (Collections cannot be ordered using 2 different orders at the same time) – Šimon Kocúrek May 19 '20 at 16:51

Embedded Dictionary Output

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