Im trying to get reference data for a list of ISINs that I read from an excel file. 
instrument_list=pd.read_excel("file path...")
I then want to create a df with the reference columns for all ISINs 
df, err = ek.get_data(
    instruments = instrument_list['ISIN'],
    fields = [
        'TR.FiAssetStatus',
        'TR.FiAssetStatusDescription',
        'TR.MUNIInstrumentType',
        'TR.FiCurrency',
        'TR.FiIssuerName',
        'TR.FiIssueDate',
        'TR.MUNIAssetStatusEffectiveDate',
        'TR.FiFaceIssuedTotal',
        'TR.MUNIOriginalAmountIssued',
        'TR.ADF_COUPON',
        'TR.FiCouponType'])
display(df)
I not sure how to get the the list in to the formula and how to use only use the ISIN-code to get the data.
Any ideas?