Untitled

>>> f = open('foo', 'w')         # open file for writing in text mode
>>> f.encoding
'UTF-8'                          # encoding is from the environment
>>> f.write('€')                 # write a Unicode string
1
>>> f.close()
>>> exit()
user@host:~$ hd foo
00000000  e2 82 ac      |...|    # data is UTF-8 encoded

>>> sys.stdout.encoding
'UTF-8'                          # encoding is from the environment
>>> exit()
user@host:~$ python3 -c 'print("€")' > foo
user@host:~$ hd foo
00000000  e2 82 ac 0a   |....|   # data is UTF-8 encoded; n is from print()

user@host:~$ python3 -c 'print(b"xe2xf82xac")' > foo
user@host:~$ hd foo
00000000  62 27 5c 78 65 32 5c 78  66 38 32 5c 78 61 63 27  |b'xe2xf82xac'|
00000010  0a                                                |.|

#!/usr/bin/env python3
import sys
print('Content-Type: text/html; charset=utf-8')
print()
print('<html><body><pre>' + sys.stdout.encoding + '</pre>h€lló wörld<body></html>')

import locale                                  # Ensures that subsequent open()s
locale.getpreferredencoding = lambda: 'UTF-8'  # are UTF-8 encoded.

import sys
sys.stdin = open('/dev/stdin', 'r')       # Re-open standard files in UTF-8
sys.stdout = open('/dev/stdout', 'w')     # mode.
sys.stderr = open('/dev/stderr', 'w')