how to change the range of read CSV file every time python file runs

[bowlofred]

I meant for the open attempt on the read file to be inside the "try" section. This is a minor change:

csv_filename = "my.csv"
csv_read_counter_file = "csv_last_read"
try:
    with open(csv_read_counter_file, "r") as f:
        lines_read = int(f.readline().rstrip())
except:
    # On any error, just reset back to start of file.
    lines_read = 0

with open(csv_filename, "r") as f:
    for index, line in enumerate(f):
        if index <= lines_read:
            continue
        print(line.rstrip())

with open(csv_read_counter_file, "w") as f:
    f.write(str(index))

I don't know why you would only be getting the first line. It should skip until the lines after that point are read.

I'm sure you could incorporate a range check instead of a simple "index <= lines_read" check. You would just need to determine how you want to populate the range.