229 – Split file header from the body

Since files are iterables, you can use features like unpacking on files:

with open("my_data.csv") as f:
    header, *body = f

columns = header.count(",") + 1
rows = len(body)

print(f"CSV file has {rows} rows and {columns} columns.")

The line header, *body = f unpacks the first line into the variable header and all remaining lines into the variable body.

This trick isn’t a replacement for the module csv, but can come in handy for a quick & dirty analysis in the REPL.