jjj jjj -4 years ago 766
Python Question

Pandas: save to excel encoding issue

I have a similar problem to the one mentioned here but none of the suggested methods work for me.

I have a medium size

.csv file with a lot of non-ascii characters.
I am splitting the file by a particular value from one of the columns, and then I'd like to save each of the obtained dataframes as an .xlsx file with the characters preserved.

This doesn't work, as I am getting an error:

UnicodeDecodeError: 'ascii' codec can't decode byte 0xff in position 7: ordinal not in range(128)

Here is what I tried:

  1. Using
    engine explicitly. This doesn't seem to change anything.

  2. Defining a function (below) to change encoding and throw away bad characters. This also doesn't change anything.

    def changeencode(data):
    cols = data.columns
    for col in cols:
    if data[col].dtype == 'O':
    data[col] = data[col].str.decode('utf-8').str.encode('ascii', 'ignore')
    return data

  3. Changing by hand all the offensive chars to some others. Still no effect (the quoted error was obtained after this change).

  4. Encoding the file as
    (which, I believe, is the correct encoding since I want to be able to manipulate the file from within the excel afterwards) doesn't help either.

I believe that the problem is in the file itself (because of 2 and 3) but I have no idea how to get around it. I'd appreciate any help. The beginning of the file is pasted below.

"Submitted","your-name","youremail","phone","miasto","cityCF","innemiasto","languagesCF","morelanguages","wiek","partnerCF","messageCF","acceptance-795","Submitted Login","Submitted From","2015-12-25 14:07:58 +00:00","Zózia kryś","test@tes.pl","4444444","Wrocław","","testujemy polskie znaki","Polski","testujemy polskie znaki","44","test","test","1","Justyna","",


Some code (one of the versions, without the splitting part):

import pandas as pd
import string
import xlsxwriter

df = pd.read_csv('path-to-file.csv')

with pd.ExcelWriter ('test.xlsx') as writer:
df.to_excel(writer, sheet_name = 'sheet1',engine='xlsxwriter')

Answer Source

Supposedly this was a bug in the version of pandas which I was using back then. Right now, in pandas ver. 0.19.2, the code below saves the csv from the question without any trouble (and with correct encoding).
NB: openpyxl module have to be installed on your system.

import pandas as pd
df = pd.read_csv('Desktop/test.csv')
df.to_excel('Desktop/test.xlsx', encoding='utf8')
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