Below is my code to retrieve an example bond data using RDP Python API:
import refinitiv.data as rd
from refinitiv.data.content import historical_pricing
rd.open_session('desktop.workspace')
response = historical_pricing.summaries.Definition(
universe='TH179175215=',
fields=['ZSPREAD'],
start='2010-04-20',
end='2024-06-03',
).get_data()
response.data.df
Currently, I am arbitrarily defining an early date (2010-04-20) to get the full history of the bond data. However, I would like to ask if there is a value I can put for the start parameter to get the full historical data? Something like 'BDATE' in the Datastream Python API. Thanks!