Improve error message when trying to open a CPORT file

[cmdugan13]

Hello, thank you for this amazing package! I think I do require an update for version 8 XPORT. I am trying to download a file from cms and load it into a data frame, but I am unable to do so. I receive this error:
ValueError: Document does not match SAS Version 5 or 6 Transport (XPORT) format
right now I am using version 3.5.0

[selik]

@cmdugan13 Do you mind pasting the code you used?

[selik]

I should probably improve the README. Did you use xport.v89.load?

[cmdugan13]

I don't, so it could be a version problem since it doesn't even show up in the directory
['Dataset',
'DictReader',
......
'to_numpy',
'to_rows',
'v56',
'warnings']

Will check on that.

Edit: version 3.5.0

[selik]

Thanks for pointing that out. Please import xport.v89.

[cmdugan13]

I made sure the version was upgraded, do it solved the missing module issue.
I am back to receiving the ValueError: Document does not match SAS Version 5 or 6 Transport (XPORT) format error, though.

import xport.v89

with open('C2419P1M.XPORT', 'rb') as f:
    library = xport.v89.load(f)

Is this related to #6

[selik]

Rats. Seems like a bug. Could you share the result of f.read(800)? I'd like to see the header bytes of the file.

[selik]

Oh, if this is a CPORT file, then it's not yet supported, but the error message should be better.