|
|
# 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
|
|
|
|
|
|
|
|
|
def decode(s, encoding=None):
|
|
|
encoding = encoding or DEFAULT_ENCODING
|
|
|
return s.decode(encoding, "replace")
|
|
|
|
|
|
|
|
|
def encode(u, encoding=None):
|
|
|
encoding = encoding or DEFAULT_ENCODING
|
|
|
return u.encode(encoding, "replace")
|
|
|
|
|
|
|
|
|
def cast_unicode(s, encoding=None):
|
|
|
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"
|
|
|
|
|
|
# Cython still rely on that as a Dec 28 2019
|
|
|
# See https://github.com/cython/cython/pull/3291 and
|
|
|
# https://github.com/ipython/ipython/issues/12068
|
|
|
def no_code(x, encoding=None):
|
|
|
return x
|
|
|
|
|
|
|
|
|
unicode_to_str = cast_bytes_py2 = no_code
|
|
|
|
