What does the error "Filename must be a regular file" mean?

[workflowsguy]

I have been using a script with the statement

Transactions = clevercsv.read_dataframe(PATH_TO_CSV_FILE)

without issues on one computer.

After running the script on a different computer, this statement now fails with the message

ValueError: Filename must be a regular file

What is this message supposed to mean?

[GjjvdBurg]

It means the file does not exist or is not a regular file. See https://docs.python.org/3/library/os.path.html#os.path.isfile

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On Wed, 18 Mar 2026, 19:10 workflowsguy, ***@***.***> wrote: *workflowsguy* created an issue (alan-turing-institute/CleverCSV#161) <#161> I have been using a script with the statement Transactions = clevercsv.read_dataframe(PATH_TO_CSV_FILE) without issues on one computer. After running the script on a different computer, this statement now fails with the message ValueError: Filename must be a regular file What is this message supposed to mean? — Reply to this email directly, view it on GitHub <#161>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAZCNKDNJMO277C6CVSA4F34RLYBPAVCNFSM6AAAAACWW6AHR2VHI2DSMVQWIX3LMV43ASLTON2WKOZUGA4TOMRQGQ2DAMY> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>