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- # coding: utf-8
- """Compatibility tricks for Python 3. Mainly to do with unicode.
- This file is deprecated and will be removed in a future version.
- """
- import platform
- import builtins as builtin_mod
- from .encoding import DEFAULT_ENCODING
- from typing import Optional
- def decode(s: bytes, encoding: str | None = None) -> str:
- encoding = encoding or DEFAULT_ENCODING
- return s.decode(encoding, "replace")
- def encode(u: str, encoding: Optional[str]=None) -> bytes:
- encoding = encoding or DEFAULT_ENCODING
- return u.encode(encoding, "replace")
- def cast_unicode(s: str | bytes, encoding: Optional[str]=None) -> str:
- if isinstance(s, bytes):
- return decode(s, encoding)
- return s
- def safe_unicode(e):
- """unicode(e) with various fallbacks. Used for exceptions, which may not be
- safe to call unicode() on.
- """
- try:
- return str(e)
- except UnicodeError:
- pass
- try:
- return repr(e)
- except UnicodeError:
- pass
- return "Unrecoverably corrupt evalue"
- # keep reference to builtin_mod because the kernel overrides that value
- # to forward requests to a frontend.
- def input(prompt=""):
- return builtin_mod.input(prompt)
- def execfile(fname, glob, loc=None, compiler=None):
- loc = loc if (loc is not None) else glob
- with open(fname, "rb") as f:
- compiler = compiler or compile
- exec(compiler(f.read(), fname, "exec"), glob, loc)
- PYPY = platform.python_implementation() == "PyPy"
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