403 Forbidden when accessing filing endpoint programmatically

[DhavalGojiya]

Describe the bug
403 Forbidden when accessing filing endpoint programmatically.
Browser says it is 404 status code, while the python requests module says it is 403 for same URL

To Reproduce

# example.py

import fecfile

# 1954520 is paper filing fec file
filing1 = fecfile.from_http('1954520')

print("Successful +++++")

Now Run python example.py

Put a breakpoint() here inside .venv/lib/python3.12/site-packages/fecfile/__init__.py :: LINE - 81 and inspect the behaviour.

fecfile/fecfile/__init__.py

Line 81 in 0ac4f03

if r.status_code == 404:

Expected behavior
The filing1 = fecfile.from_http('1954520') work as expected

Environment
Python3.12

Additional context
(Browser says 404 for same url)

URL: https://docquery.fec.gov/dcdev/posted/1954520.fec

-> if r.status_code == 404:
(Pdb) print(r)
<Response [403]>
(Pdb) url
'https://docquery.fec.gov/dcdev/posted/1954520.fec'
(Pdb) print(r.status_code)
403

Possible fix

See:

if r.status_code == 404:
    url = "https://docquery.fec.gov/paper/posted/{n}.fec".format(
        n=file_number
    )
    r = requests.get(url, headers=req_headers, stream=True)

If the requests module returns 404, then this fallback URL is used and everything works as expected.

However, in some cases the initial request returns 403 instead of 404.
Updating the condition to also handle 403 may resolve the issue:

if r.status_code in (403, 404):