I simplified my code for better understanding. here is the problem :
case 1:
# -*- coding: utf-8 -*-
text = "چرا کار نمیکنی؟" # also using u"...." results the same
print(text)
output:
UnicodeEncodeError: 'charmap' codec can't encode characters in position 0-2: character maps to <undefined>
case 2:
text = "چرا کار نمیکنی؟".encode("utf-8")
print(text)
there is no output.
case 3:
import sys
text = "چرا کار نمیکنی؟".encode("utf-8")
sys.stdout.buffer.write(text)
output:
چرا کار نمیکنی؟
I know that case 3 works somehow , but I want to use other functions like print() , write(str()) , ....
I also read the documentation of python 3 regarding to Unicode here.
and also read dozens of Q&A in stackoverflow.
and here is a long article explaining the problem and answer for python 2.X
the simple question is:
how to print non-ASCII characters like Farsi or Arabic using python print() function?
update 1 : as it is suggested from many guys that the problem is concerned with the terminal I tested the case :
case 4 :
text = "چرا کار نمیکنی؟" .encode("utf-8")# also using u"...." results the same
print(text)
terminal :
python persian_encoding.py > test.txt
test.txt :
b'\xda\x86\xd8\xb1\xd8\xa7 \xda\xa9\xd8\xa7\xd8\xb1 \xd9\x86\xd9\x85\xdb\x8c\xda\xa9\xd9\x86\xdb\x8c\xd8\x9f'
very important update:
after a while playing around with this issue, finally I found another workaround to make cmd.exe do the job (without needing third party softwares like ConEmu or ...):
a little explanation first:
our main problem does not concern Python. it's a problem with the Command Prompt character set in Windows(for complete explanation check out Arman's Answer) so ... if you change the character set of Windows Command Prompt to UTF-8 instead of default ascii , then the Command Prompt will be able to interact with UTF-8 characters(like Farsi or Arabic) this solution does not guarantee good representation of characters(as they will be printed out like little squares), but it's a good solution if you want to have file I/O in python with UTF-8 characters.
Steps:
before starting python from command line , type:
chcp 65001
now run your python code as always.
python testcode.py
result in case 1:
?????? ??? ??????
it runs without errors.
screenshot:
for more information about how to set 65001 as the default character set check this out.
Your code is correct as it works on my computer with both Python 2 and 3 (I'm on OS X):
~$ python -c 'print "تست"'
تست
~$ python3 -c 'print("تست")'
تست
The problem is with your terminal that can not output unicode characters. You could verify it by redirecting your output to a file like python3 my_file.py > test.txt
and open the file using an editor.
If you are on Windows you could use a terminal like Console2 or ConEmu that renders unicode better than Windows prompt.
You may encounter errors with these terminals too because of wrong code-pages/encodings of Windows. There is a small python package that fixes them (sets them correctly):
1- Install this pip install win-unicode-console
2- Put this at the top of your python file:
try:
# Fix UTF8 output issues on Windows console.
# Does nothing if package is not installed
from win_unicode_console import enable
enable()
except ImportError:
pass
If you got errors when redirecting to a file, you may fix it by settings io encoding:
On Windows command line:
SET PYTHONIOENCODING=utf-8
On Linux/OS X terminal:
export PYTHONIOENCODING=utf-8
u"aaa"
syntax in python 3. Strings literals are unicode by default.# -*- coding: utf-8 -*-
) is not needed.The output will depend basically on which platform&terminal you run your code. Let's examine the below snippet for different windows terminals running either with 2.x or 3.x:
# -*- coding: utf-8 -*-
import sys
def case1(text):
print(text)
def case2(text):
print(text.encode("utf-8"))
def case3(text):
sys.stdout.buffer.write(text.encode("utf-8"))
if __name__ == "__main__":
text = "چرا کار نمیکنی؟"
for case in [case1, case2, case3]:
try:
print("Running {0}".format(case.__name__))
case(text)
except Exception as e:
print(e)
print('-'*80)
Python 2.x
Sublime Text 3 3122
Running case1
'charmap' codec can't encode characters in position 0-2: character maps to <undefined>
--------------------------------------------------------------------------------
Running case2
b'\xda\x86\xd8\xb1\xd8\xa7 \xda\xa9\xd8\xa7\xd8\xb1 \xd9\x86\xd9\x85\xdb\x8c\xda\xa9\xd9\x86\xdb\x8c\xd8\x9f'
--------------------------------------------------------------------------------
Running case3
چرا کار نمیکنی؟--------------------------------------------------------------------------------
ConEmu v151205
Running case1
┌åÏ▒Ϻ ┌®ÏºÏ▒ ┘å┘à█î┌®┘å█îσ
--------------------------------------------------------------------------------
Running case2
'ascii' codec can't decode byte 0xda in position 0: ordinal not in range(128)
--------------------------------------------------------------------------------
Running case3
'file' object has no attribute 'buffer'
--------------------------------------------------------------------------------
Windows Command Prompt
Running case1
┌åÏ▒Ϻ ┌®ÏºÏ▒ ┘å┘à█î┌®┘å█îσ
--------------------------------------------------------------------------------
Running case2
'ascii' codec can't decode byte 0xda in position 0: ordinal not in range(128)
--------------------------------------------------------------------------------
Running case3
'file' object has no attribute 'buffer'
--------------------------------------------------------------------------------
Python 3.x
Sublime Text 3 3122
Running case1
'charmap' codec can't encode characters in position 0-2: character maps to <undefined>
--------------------------------------------------------------------------------
Running case2
b'\xda\x86\xd8\xb1\xd8\xa7 \xda\xa9\xd8\xa7\xd8\xb1 \xd9\x86\xd9\x85\xdb\x8c\xda\xa9\xd9\x86\xdb\x8c\xd8\x9f'
--------------------------------------------------------------------------------
Running case3
چرا کار نمیکنی؟--------------------------------------------------------------------------------
ConEmu v151205
Running case1
'charmap' codec can't encode characters in position 0-2: character maps to <undefined>
--------------------------------------------------------------------------------
Running case2
b'\xda\x86\xd8\xb1\xd8\xa7 \xda\xa9\xd8\xa7\xd8\xb1 \xd9\x86\xd9\x85\xdb\x8c\xda\xa9\xd9\x86\xdb\x8c\xd8\x9f'
--------------------------------------------------------------------------------
Running case3
┌åÏ▒Ϻ ┌®ÏºÏ▒ ┘å┘à█î┌®┘å█îσ--------------------------------------------------------------------------------
Windows Command Prompt
Running case1
'charmap' codec can't encode characters in position 0-2: character maps to <unde
fined>
--------------------------------------------------------------------------------
Running case2
b'\xda\x86\xd8\xb1\xd8\xa7 \xda\xa9\xd8\xa7\xd8\xb1 \xd9\x86\xd9\x85\xdb\x8c\xda
\xa9\xd9\x86\xdb\x8c\xd8\x9f'
--------------------------------------------------------------------------------
Running case3
┌åÏ▒Ϻ ┌®ÏºÏ▒ ┘å┘à█î┌®┘å█îσ----------------------------------------------------
----------------------------
As you can see just using sublime text3 terminal (case3) worked alright. The other terminals didn't support persian. The main point here is, it depends which terminal & platform you're using.
Solution (ConEmu specific)
Modern terminals like ConEmu allows you to work with UTF8-Encoding as explained here, so, let's try:
chcp 65001 & cmd
And then running again the script against 2.x & 3.x:
Python2.x
Running case1
��را کار نمیکنی؟[Errno 0] Error
--------------------------------------------------------------------------------
Running case2
'ascii' codec can't decode byte 0xda in position 0: ordinal not in range(128)
--------------------------------------------------------------------------------
Running case3
'file' object has no attribute 'buffer'
--------------------------------------------------------------------------------
Python3.x
Running case1
چرا کار نمیکنی؟
--------------------------------------------------------------------------------
Running case2
b'\xda\x86\xd8\xb1\xd8\xa7 \xda\xa9\xd8\xa7\xd8\xb1 \xd9\x86\xd9\x85\xdb\x8c\xda\xa9\xd9\x86\xdb\x8c\xd8\x9f'
--------------------------------------------------------------------------------
Running case3
چرا کار نمیکنی؟--------------------------------------------------------------------------------
As you can see, now the output was succesfull with python3 case1 (print). So... moral of a fable... learn more about your tools and how to configure them properly for your use-cases ;-)
I can't reproduce the problem. Here is my script p.py
:
text = "چرا کار نمیکنی؟"
print(text)
And the result of python3 p.py
:
چرا کار نمیکنی؟
Are you sure you're using python 3 ? With python2 p.py
:
SyntaxError: Non-ASCII character '\xda' in file p.py on line 1, but no encoding declared; see http://python.org/dev/peps/pep-0263/ for details
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