Index Error in python, list index out of range

Question

I use this script to manipulate a csv and upload it to database, this have been used multiple times with no problem. Today I was running it but got this list index out of range which does not make any sense to me. The script have the following commands:

csv_reader=csv.DictReader(csv_file,dialect='excel-tab')
        data=[row for row in csv_reader]
        fieldnamesreader = [I for I in data[0].keys()]

This last line is where it gave me the error:

 File "MyScript.py", line 108, in main
    fieldnamesreader = [I for I in data[0].keys()]
IndexError: list index out of range

I'm using python 2.7

Answer 1

您的 CSV 文件为空，因此数据成为空列表。