How to use the vine.five.exec_ function in vine
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celery / celery / celery / utils / serialization.py View on Github 
elif isinstance(obj, datetime.timedelta):
return str(obj)
else:
if unknown_type_filter is None:
raise ValueError(
'Unsupported type: {0!r} {1!r} (parent: {2})'.format(
type(obj), obj, key))
return unknown_type_filter(obj)
# Since PyPy 3 targets Python 3.2, 'raise exc from None' will
# raise a TypeError so we need to look for Python 3.3 or newer
if PY33: # pragma: no cover
from vine.five import exec_
_raise_with_context = None # for flake8
exec_("""def _raise_with_context(exc, ctx): raise exc from ctx""")
def raise_with_context(exc):
exc_info = sys.exc_info()
if not exc_info:
raise exc
elif exc_info[1] is exc:
raise
_raise_with_context(exc, exc_info[1])
else:
def raise_with_context(exc):
exc_info = sys.exc_info()
if not exc_info:
raise exc
if exc_info[1] is exc:
raise
elif exc_info[2]:
