question

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RDP Python Type Error

Hi,

I'm trying to use RDP in Python, as I cannot access the info I want via Eikon.

I've copied the basic example from your site (https://developers.refinitiv.com/article/rdp-library-python-log-returns-correlation-matrix-and-ols-regression-models ), but when I run the below code (I've deleted my APP_KEY):


import getpass

import refinitiv.dataplatform as rdp # the RDP library for Python

import pandas as pd

import numpy as np


rdp.open_desktop_session("XXXXXXXXXXXXXXXXXXXXXXXX")


RICs = [".SPX",".VIX","IBM.N","GE"] # the list of RICs

s_date = "2018-01-02" # start date

e_date = "2018-12-30" # end date

#TBD - remove later pd.set_option('display.max_columns', None)

lastPriceField = "TRDPRC_1" # the last price field of these RICs

data = pd.DataFrame() # define data is a DataFrame

for aRIC in RICs: # request daily last price for each RIC

df= rdp.get_historical_price_summaries(aRIC,start=s_date,end=e_date,interval = rdp.Intervals.DAILY,fields=[lastPriceField])

if df is None: # check if there is any error

print("Error for RIC " + aRIC + ":" + str(rdp.get_last_status()['error'])) # print the error

else:

df[lastPriceField] = df[lastPriceField].astype(float) # convert string type to float

data[aRIC] = df[lastPriceField] # create the RIC's last price column

data # display daily last price of the RICs


I get the below python error for the rdp call. Can somebody please help.


Thanks


TypeError                                 Traceback (most recent call last)
<ipython-input-14-bbed23114e72> in <module>
     14 data = pd.DataFrame() # define data is a DataFrame
     15 for aRIC in RICs: # request daily last price for each RIC
---> 16     df= rdp.get_historical_price_summaries(aRIC,start=s_date,end=e_date,interval = rdp.Intervals.DAILY,fields=[lastPriceField])
     17     if df is None: # check if there is any error
     18         print("Error for RIC " + aRIC + ":" + str(rdp.get_last_status()['error'])) # print the error

C:\ProgramData\Miniconda3_64\envs\myenv\lib\site-packages\refinitiv\dataplatform\factory\content_factory.py in get_historical_price_summaries(universe, interval, start, end, adjustments, sessions, count, fields, on_response, closure)
    401                                                           fields=fields,
    402                                                           on_response=on_response,
--> 403                                                           closure=closure)
    404     405 
C:\ProgramData\Miniconda3_64\envs\myenv\lib\site-packages\refinitiv\dataplatform\factory\content_factory.py in _get_historical_price_summaries(cls, universe, interval, start, end, adjustments, sessions, count, fields, on_response, closure)
    194                                                               count=count,
    195                                                               fields=fields,
--> 196                                                               closure=closure)
    197         cls.__last_result = historic_summaries
    198         if historic_summaries.is_success and historic_summaries.data and historic_summaries.data.df is not None:

C:\ProgramData\Miniconda3_64\envs\myenv\lib\site-packages\refinitiv\dataplatform\content\data\historical_pricing.py in get_summaries(universe, session, interval, start, end, adjustments, sessions, count, fields, on_response, closure)
    275                                                        count=count,
    276                                                        fields=fields,
--> 277                                                        closure=closure)
    278             return result
    279 
C:\ProgramData\Miniconda3_64\envs\myenv\lib\site-packages\refinitiv\dataplatform\content\data\historical_pricing.py in _get_summaries(self, universe, interval, start, end, adjustments, sessions, count, fields, closure)
    296                                                                                          count=count,
    297                                                                                          fields=fields,
--> 298                                                                                          closure=closure))
    299     300     #############################################################

C:\ProgramData\Miniconda3_64\envs\myenv\lib\site-packages\nest_asyncio.py in run_until_complete(self, future)
     59             while not f.done():
     60                 run_once(self)
---> 61             return f.result()
     62         else:
     63             return self._run_until_complete_orig(future)

C:\ProgramData\Miniconda3_64\envs\myenv\lib\asyncio\tasks.py in _step(***failed resolving arguments***)
    178                 # We use the `send` method directly, because coroutines
    179                 # don't have `__iter__` and `__next__` methods.
--> 180                 result = coro.send(None)
    181             else:
    182                 result = coro.throw(exc)

C:\ProgramData\Miniconda3_64\envs\myenv\lib\site-packages\refinitiv\dataplatform\content\data\historical_pricing.py in _get_summaries_async(self, universe, interval, start, end, adjustments, sessions, count, fields, closure)
    446                                                     count=count,
    447                                                     fields=fields,
--> 448                                                     closure=closure)
    449     450         _historical_result = HistoricalPricing.HistoricalPricingResponse(_result._response, 
C:\ProgramData\Miniconda3_64\envs\myenv\lib\site-packages\refinitiv\dataplatform\content\data\historical_pricing.py in _get_historicalpricing(self, url, path_parameters, query_parameters, start, end, fn_format_datetime, adjustments, market_sessions, count, fields, closure)
    542                                                           path_parameters=path_parameters,
    543                                                           query_parameters=_query_parameters,
--> 544                                                           closure=closure)
    545         if _result and not _result.is_success:
    546             self._endpoint.session.log(1, f'Historical Pricing request failed: {_result.status}')

C:\ProgramData\Miniconda3_64\envs\myenv\lib\site-packages\refinitiv\dataplatform\delivery\data\endpoint.py in send_request_async(self, method, header_parameters, path_parameters, query_parameters, body_parameters, closure)
    441                                                                       json=_body,
    442                                                                       closure=closure)
--> 443             _result = Endpoint.EndpointResponse(_response)
    444     445             self.on_response(_result)

C:\ProgramData\Miniconda3_64\envs\myenv\lib\site-packages\refinitiv\dataplatform\delivery\data\endpoint.py in __init__(self, response)
    203                 else:
    204                     try:
--> 205                         _raw = response.json()
    206                         if _raw and _raw.get("error"):
    207                             self.status["error"] = _raw["error"]

C:\ProgramData\Miniconda3_64\envs\myenv\lib\site-packages\requests\models.py in json(self, **kwargs)
    883             # decoding fails, fall back to `self.text` (using chardet to make
    884             # a best guess).
--> 885             encoding = guess_json_utf(self.content)
    886             if encoding is not None:
    887                 try:

C:\ProgramData\Miniconda3_64\envs\myenv\lib\site-packages\requests\utils.py in guess_json_utf(data)
    869     if sample[:2] in (codecs.BOM_UTF16_LE, codecs.BOM_UTF16_BE):
    870         return 'utf-16'     # BOM included
--> 871     nullcount = sample.count(_null)
    872     if nullcount == 0:
    873         return 'utf-8'

TypeError: must be str, not bytes
pythonrdp-apiapirefinitiv-data-platformerror
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Upvotes
Accepted
38 2 1 2

Hi,

It looks like it might have been a versioning issue with Python. We are encouraged to use 3.6.9 at work, as it is considered the most stable for our virtual desktop environment.

I created another environment, using 3.8.1 and the code seems to run fine now.

Thanks


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Great - thanks for the feedback and confirmation.

Upvotes
13.7k 61 39 63

Hi @thomas.goodman,

I just tried the same example with success so the issue is likely related to your environment. Can you confirm a few things:

Can you provide some version information such as the Eikon version, the DESKTOPSXSSVC and PROXY versions in the Eikon \ Help \ About Thomson Reuters window ?

Also, I would like you to try the following commands within your notebook which provides some logging information:

Execute the above commands right after the command:

rdp.open_desktop_session(APP_KEY)

There may be a permission issue or an issue with your RDP Python version.


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