Here's a quick example using RDP Library to access IPA Financial Contracts service on RDP

bond_ric = "34540TVB5="
start_date = "2020-01-01"
end_date = "2022-01-01"
df = pd.DataFrame(columns=['Coupon Date','Coupon Value'])
while start_date<end_date:
    calc_params = rdp.ipa.bond.CalculationParams(valuation_date=start_date)
    tmp_df = rdp.get_bond_analytics(bond_ric,
                                    ["NextCouponDate","NextCouponValue"],
                                   calc_params)
    start_date=tmp_df.iloc[0,0]
    df = df.append({'Coupon Date':start_date, 
                    'Coupon Value':tmp_df.iloc[0,1]}, 
                   ignore_index=True)
df

Thank you @AlexPutkov, your code worked just fine! I am getting closer to what I need.

But sometimes, I get the error:

---

File "<ipython-input-165-ddf031214609>", line 10, in <module>

start_date=tmp_df.iloc[0,0]

AttributeError: 'NoneType' object has no attribute 'iloc'

---

I managed to do a request for a list of bonds constituents in the following way:

 for i in consitutents.index:
    bond_isin = iboxx_isin['ISIN'][i]
    start_date = iboxx_isin['Issue Date'][i]
    end_date = "2021-01-01"
    while start_date<end_date:
        calc_params = rdp.ipa.bond.CalculationParams(valuation_date=start_date)
        tmp_df = rdp.get_bond_analytics(bond_isin,["NextCouponDate","NextCouponValue"], calc_params)
        start_date=tmp_df.iloc[0,0]
        df_coupon = df_coupon.append({"ISIN":bond_isin,'Coupon Date':start_date, 'Coupon Value':tmp_df.iloc[0,1]}, ignore_index=True)  
concate= pd.concat([df_coupon], ignore_index=True)

Here, a snapshot of the constituents list:

ISINIssue DateXS19071207912018-12-06XS11963800312015-03-09XS16298664322017-06-21XS20513620722019-09-11XS20513623122019-09-11

But I got the following errors:

---

File "/Users/mc/opt/anaconda3/lib/python3.8/site-packages/refinitiv/dataplatform/content/ipa/contracts/_financial_contracts.py", line 37, in _get_instrument_analytics

result = self.session._loop.run_until_complete(

event_list = self._selector.select(timeout)

kev_list = self._selector.control(None, max_ev, timeout)

---

Maybe I need to chunk the request in smaller sizes?

@etudiant1

I haven't been able to reproduce the issue on my end using a sample of ISINs you provided.
"AttributeError: 'NoneType' object has no attribute 'iloc'" indicates that rdp.get_bond_analytics function returned None instead of a dataframe. Have you tried isolating the issue? Does it happen randomly or does it always happen with the same ISIN(s)?
When the exception is raised, try calling rdp.get_last_status() to see the status of the last request. Using Fiddler to capture HTTP requests and see if the request corresponding to rdp.get_bond_analytics function that returned None fails would be very helpful too.