diff options
Diffstat (limited to 'Lib/traceback.py')
| -rw-r--r-- | Lib/traceback.py | 50 |
1 files changed, 38 insertions, 12 deletions
diff --git a/Lib/traceback.py b/Lib/traceback.py index b25a729..5d83f85 100644 --- a/Lib/traceback.py +++ b/Lib/traceback.py @@ -5,6 +5,7 @@ import itertools import linecache import sys import textwrap +import warnings from contextlib import suppress __all__ = ['extract_stack', 'extract_tb', 'format_exception', @@ -719,7 +720,8 @@ class TracebackException: - :attr:`__suppress_context__` The *__suppress_context__* value from the original exception. - :attr:`stack` A `StackSummary` representing the traceback. - - :attr:`exc_type` The class of the original traceback. + - :attr:`exc_type` (deprecated) The class of the original traceback. + - :attr:`exc_type_str` String display of exc_type - :attr:`filename` For syntax errors - the filename where the error occurred. - :attr:`lineno` For syntax errors - the linenumber where the error @@ -737,7 +739,7 @@ class TracebackException: def __init__(self, exc_type, exc_value, exc_traceback, *, limit=None, lookup_lines=True, capture_locals=False, compact=False, - max_group_width=15, max_group_depth=10, _seen=None): + max_group_width=15, max_group_depth=10, save_exc_type=True, _seen=None): # NB: we need to accept exc_traceback, exc_value, exc_traceback to # permit backwards compat with the existing API, otherwise we # need stub thunk objects just to glue it together. @@ -754,12 +756,23 @@ class TracebackException: _walk_tb_with_full_positions(exc_traceback), limit=limit, lookup_lines=lookup_lines, capture_locals=capture_locals) - self.exc_type = exc_type + + self._exc_type = exc_type if save_exc_type else None + # Capture now to permit freeing resources: only complication is in the # unofficial API _format_final_exc_line self._str = _safe_string(exc_value, 'exception') self.__notes__ = getattr(exc_value, '__notes__', None) + self._is_syntax_error = False + self._have_exc_type = exc_type is not None + if exc_type is not None: + self.exc_type_qualname = exc_type.__qualname__ + self.exc_type_module = exc_type.__module__ + else: + self.exc_type_qualname = None + self.exc_type_module = None + if exc_type and issubclass(exc_type, SyntaxError): # Handle SyntaxError's specially self.filename = exc_value.filename @@ -771,6 +784,7 @@ class TracebackException: self.offset = exc_value.offset self.end_offset = exc_value.end_offset self.msg = exc_value.msg + self._is_syntax_error = True elif exc_type and issubclass(exc_type, ImportError) and \ getattr(exc_value, "name_from", None) is not None: wrong_name = getattr(exc_value, "name_from", None) @@ -869,6 +883,24 @@ class TracebackException: """Create a TracebackException from an exception.""" return cls(type(exc), exc, exc.__traceback__, *args, **kwargs) + @property + def exc_type(self): + warnings.warn('Deprecated in 3.13. Use exc_type_str instead.', + DeprecationWarning, stacklevel=2) + return self._exc_type + + @property + def exc_type_str(self): + if not self._have_exc_type: + return None + stype = self.exc_type_qualname + smod = self.exc_type_module + if smod not in ("__main__", "builtins"): + if not isinstance(smod, str): + smod = "<unknown>" + stype = smod + '.' + stype + return stype + def _load_lines(self): """Private API. force all lines in the stack to be loaded.""" for frame in self.stack: @@ -901,18 +933,12 @@ class TracebackException: """ indent = 3 * _depth * ' ' - if self.exc_type is None: + if not self._have_exc_type: yield indent + _format_final_exc_line(None, self._str) return - stype = self.exc_type.__qualname__ - smod = self.exc_type.__module__ - if smod not in ("__main__", "builtins"): - if not isinstance(smod, str): - smod = "<unknown>" - stype = smod + '.' + stype - - if not issubclass(self.exc_type, SyntaxError): + stype = self.exc_type_str + if not self._is_syntax_error: if _depth > 0: # Nested exceptions needs correct handling of multiline messages. formatted = _format_final_exc_line( |