[Django]-UnicodeDecodeError: 'ascii' codec can't decode byte 0xd1 in position 2: ordinal not in range(128)

Just add this lines to your code:

1.Python2

import sys
reload(sys)
sys.setdefaultencoding('utf-8')

2.Python3

import sys
from importlib import reload
reload(sys)
sys.setdefaultencoding('utf-8')

for Python 3 users. you can do

with open(csv_name_here, 'r', encoding="utf-8") as f:
    #some codes

it works with flask too 🙂

The main reason for the error is that the default encoding assumed by python is ASCII.
Hence, if the string data to be encoded by encode('utf8') contains character that is outside of ASCII range e.g. for a string like ‘hgvcj터파크387’, python would throw error because the string is not in the expected encoding format.

If you are using python version earlier than version 3.5, a reliable fix would be to set the default encoding assumed by python to utf8:

import sys
reload(sys)
sys.setdefaultencoding('utf8')
name = school_name.encode('utf8')

This way python would be able to anticipate characters within a string that fall outside of ASCII range.

However, if you are using python version 3.5 or above, reload() function is not available, so you would have to fix it using decode e.g.

name = school_name.decode('utf8').encode('utf8')

Check which locale you’re using with the locale command. If it’s not en_US.UTF-8, change it like this:

sudo apt install locales 
sudo locale-gen en_US en_US.UTF-8    
sudo dpkg-reconfigure locales

If you don’t have permission to do that you can run all your Python code like this:

PYTHONIOENCODING="UTF-8" python3 ./path/to/your/script.py

or run this command before running your Python code

export PYTHONIOENCODING="UTF-8"

to set it in the shell you run that in.

In my case, I was using POSIX, the default Ubuntu locale instead of en_US.UTF-8, so I saw this output:

$ locale
LANG=
LANGUAGE=
LC_CTYPE="POSIX"
LC_NUMERIC="POSIX"
LC_TIME="POSIX"
LC_COLLATE="POSIX"
LC_MONETARY="POSIX"
LC_MESSAGES="POSIX"
LC_PAPER="POSIX"
LC_NAME="POSIX"
LC_ADDRESS="POSIX"
LC_TELEPHONE="POSIX"
LC_MEASUREMENT="POSIX"
LC_IDENTIFICATION="POSIX"
LC_ALL=

which caused Python to open files as ASCII instead of UTF-8.

You can check which locale Python is using like this:

>>> import locale
>>> locale.getpreferredencoding(False)
'ANSI_X3.4-1968'

locale.getpreferredencoding(False) is the function called by open() when you don’t provide an encoding. The output should be 'UTF-8', but in my case it was 'ANSI_X3.4-1968', some variant of ASCII.

For Python 3 users:

changing the encoding from ‘ascii’ to ‘latin1’ works.

Also, you can try finding the encoding automatically by reading the top 10000 bytes using the below snippet:

import chardet  
with open("dataset_path", 'rb') as rawdata:  
            result = chardet.detect(rawdata.read(10000))  
print(result)

if you get this issue while running certbot while creating or renewing certificate, Please use the following method

grep -r -P '[^\x00-\x7f]' /etc/apache2 /etc/letsencrypt /etc/nginx

That command found the offending character “´” in one .conf file in the comment. After removing it (you can edit comments as you wish) and reloading nginx, everything worked again.

Source :https://github.com/certbot/certbot/issues/5236

Or when you deal with text in Python if it is a Unicode text, make a note it is Unicode.

Set text=u'unicode text' instead just text='unicode text'.

This worked in my case.

Dealing with this issue inside of a Docker container.
It might be the case (as it was for me) that you only need to generate the locale and do nothing more:

sudo locale-gen en_US en_US.UTF-8

In some case that was sufficient for me because locales was already installed and configured. If you have to install locales and configure it, add the following part to your Dockerfile:

RUN apt update && apt install locales && \
    sed -i -e 's/# en_US.UTF-8 UTF-8/en_US.UTF-8 UTF-8/' /etc/locale.gen && \
    echo 'LANG="en_US.UTF-8"'>/etc/default/locale && \
    dpkg-reconfigure --frontend=noninteractive locales && \
    update-locale LANG=en_US.UTF-8

ENV LANG en_US.UTF-8
ENV LANGUAGE en_US.UTF-8
ENV LC_ALL en_US.UTF-8

I tested it like this:

cat <<EOF > /tmp/test.txt
++*=|@#|¼üöäàéàè!´]]¬|¢|¢¬|{ł|¼½{}}
EOF

python3
import pathlib; pathlib.Path("/tmp/test.txt").read_text()

I faced this issue while using Pickle for unloading.
Try,

data = pickle.load(f,encoding='latin1')

If you encounter this problem in a docker container. Maybe you need to configure locale.

apt-get install locales
dpkg-reconfigure locales # select 146(en_US.UTF-8)
echo "export LC_ALL=en_US.UTF-8" >> ~/.bashrc
echo "export LANG=en_US.UTF-8" >> ~/.bashrc
echo "export LANGUAGE=en_US.UTF-8" >> ~/.bashrc
. ~/.bashrc

open with encoding UTF 16 because of lat and long.

with open(csv_name_here, 'r', encoding="utf-16") as f:

It does work by just taking the argument ‘rb’ read binary instead of ‘r’ read