How to change from printFacts ( ) to return a list & Loop over list when writing CSV

[Larz60+]

which version of python are you using?
In python 3
I would split line 149, and use the format statement:

with open("ratios.csv", "a") as ratiofile:
    buff = '{},{},{},{},{},{},{},{},{},{},{},{},{}\n'.format(tradingSymbol, entityRegistrantName, entityCentralIndexKey,
                                                          currentFiscalYearEndDate,
                                                          docType, documentPeriodEndDate, documentFiscalYearFocus,
                                                          documentFiscalPeriodFocus,
                                                          entityCommonStockSharesOutstanding, documentCreationDate,
                                                          commonStockSharesIssued, treasuryStockShares,
                                                          commonStockSharesOutstanding)
    ratiofile.write(buff)

if python 3.6 (and newer)

        with open("ratios.csv", "a") as ratiofile:
with open("ratios.csv", "a") as ratiofile:
    buff = f'{tradingSymbol},{entityRegistrantName},{entityCentralIndexKey},{currentFiscalYearEndDate},' \
           f'{docType},{documentPeriodEndDate},{documentFiscalYearFocus},{documentFiscalPeriodFocus},' \
           f'{entityCommonStockSharesOutstanding},{documentCreationDate},{commonStockSharesIssued},' \
           f'{treasuryStockShares},{commonStockSharesOutstanding}\n'
    ratiofile.write(buff)

You don't need the close statement when using with, file is closed automatically.

(not tested- may need minor tweeking)