Even though you get an error when adding a function that doesn't exist to a CAS table object, it still adds the computation to the object. This causes an error moving forward. You either have to reset the CAS table object, or remove just the bad expression.

I feel that if you get an error when using a SAS function it should not add the expression to the CASTable object.

Example below:

Create demo DataFrame

df = pd.DataFrame({
'SASDate':[18260,18212, 18290, 18201, 18158],
'StrDate':['2009-12-29', '2009-11-11', '2010-01-28', '2009-10-31', '2009-09-18']
})

Upload DataFrame to CAS

castbl = conn.upload_frame(df,
casout = {'name':'date_table',
'caslib':'casuser',
'replace':True})

View params of CASTable object

castbl.params
[output]: {'name': 'DATE_TABLE', 'caslib': 'CASUSER(Peter)'}

Table preview

castbl.head()

Eval method bad function

castbl.eval('NewCol = badfunction(SASData)')

View params

castbl.params
[output]
{'name': 'DATE_TABLE',
'caslib': 'samples',
'computedvars': ['NewCol'],
'computedvarsprogram': 'NewCol = badfunction(SASData); NewCol = NewCol; '}