1 """A minimal subset of the locale module used at interpreter startup 2 (imported by the _io module), in order to reduce startup time. 3 4 Don't import directly from third-party code; use the `locale` module instead! 5 """ 6 7 import sys 8 import _locale 9 10 if sys.platform.startswith("win"): 11 def getpreferredencoding(do_setlocale=True): 12 return _locale._getdefaultlocale()[1] 13 else: 14 try: 15 _locale.CODESET 16 except AttributeError: 17 def getpreferredencoding(do_setlocale=True): 18 # This path for legacy systems needs the more complex 19 # getdefaultlocale() function, import the full locale module. 20 import locale 21 return locale.getpreferredencoding(do_setlocale) 22 else: 23 def getpreferredencoding(do_setlocale=True): 24 assert not do_setlocale 25 result = _locale.nl_langinfo(_locale.CODESET) 26 if not result and sys.platform == 'darwin': 27 # nl_langinfo can return an empty string 28 # when the setting has an invalid value. 29 # Default to UTF-8 in that case because 30 # UTF-8 is the default charset on OSX and 31 # returning nothing will crash the 32 # interpreter. 33 result = 'UTF-8' 34 return result 35
