Python read csv - BOM embedded into the first key

Question

I\'m using Python 2.7.12. With this code snippet I\'m saving a utf-8 csv file. I wrote the BOM (byte order mark) at the beginning of the file.

import codecs
         


        

Answer 1

In Python 3, the built-in open function is an alias for io.open.

All you need to open a file encoded as UTF-8 with BOM:

open(path, newline='', encoding='utf-8-sig')

Example

import csv

...

with open(path, newline='', encoding='utf-8-sig') as csv_file:
    reader = csv.DictReader(csv_file, dialect='excel')
    for row in reader:
        print(row['first_name'], row['last_name'])

Answer 2

You have to tell open that this is UTF-8 with BOM. I know that works with io.open:

import io

.
.
.
inputFile = io.open("test.csv", "r", encoding='utf-8-sig')
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.
.

And you have to open the file in text mode, "r" instead of "rb".