python cli encoding

README.md

$ locale
LANG="en_US.UTF-8"
LC_COLLATE="en_US.UTF-8"
LC_CTYPE="en_US.UTF-8"
LC_MESSAGES="en_US.UTF-8"
LC_MONETARY="en_US.UTF-8"
LC_NUMERIC="en_US.UTF-8"
LC_TIME="en_US.UTF-8"
LC_ALL="en_US.UTF-8"

$ ./test.sh
python sad.py
UTF-8
Привет Я unicode символ - ♡♢♚♛ ඓඍඏ




python happy.py
before: UTF-8
after: UTF-8
Привет Я unicode символ - ♡♢♚♛ ඓඍඏ




python sad.py | cat
Traceback (most recent call last):
  File "sad.py", line 6, in <module>
None
    print u'Привет Я unicode символ - ♡♢♚♛ ඓඍඏ'
UnicodeEncodeError: 'ascii' codec can't encode characters in position 0-5: ordinal not in range(128)




python happy.py | cat
before: None
after: None
Привет Я unicode символ - ♡♢♚♛ ඓඍඏ

happy.py

#!/usr/bin/env python
# encoding: utf-8

import sys
print 'before: {}'.format(sys.stdout.encoding)
reload(sys)
sys.setdefaultencoding('utf-8')
print 'after: {}'.format(sys.stdout.encoding)

print u'Привет Я unicode символ - ♡♢♚♛ ඓඍඏ'

sad.py

#!/usr/bin/env python
# encoding: utf-8
import sys
print sys.stdout.encoding

print u'Привет Я unicode символ - ♡♢♚♛ ඓඍඏ'

test.sh

#!/bin/bash

echo "python sad.py"
python sad.py
echo -e "\n\n\n"

echo "python happy.py"
python happy.py
echo -e "\n\n\n"


echo "python sad.py | cat"
python sad.py | cat
echo -e "\n\n\n"

echo "python happy.py | cat"
python happy.py | cat
echo -e "\n\n\n"