...to be random.
If I run 
import eikon as ek 
then run 
ek.set_app_key('xxxxxxx') t
then run 
data = ek.get_timeseries(['.SPXTR'],  fields='CLOSE',  start_date='2020-02-12',  end_date='2021-02-08', interval='daily')  
It works, most of the time.   However, if I run it all in one scrip it will hang without giving an error and I have to restart spyder.  This can't be by design so what can I do to fix this?  Thanks.