self.exc_traceback = exc_traceback

[500] Fix | Delete

self.__cause__ = cause

[501] Fix | Delete

self.__context__ = context

[502] Fix | Delete

self.__suppress_context__ = \

[503] Fix | Delete

exc_value.__suppress_context__ if exc_value else False

[504] Fix | Delete

# TODO: locals.

[505] Fix | Delete

self.stack = StackSummary.extract(

[506] Fix | Delete

walk_tb(exc_traceback), limit=limit, lookup_lines=lookup_lines,

[507] Fix | Delete

capture_locals=capture_locals)

[508] Fix | Delete

self.exc_type = exc_type

[509] Fix | Delete

# Capture now to permit freeing resources: only complication is in the

[510] Fix | Delete

# unofficial API _format_final_exc_line

[511] Fix | Delete

self._str = _some_str(exc_value)

[512] Fix | Delete

if exc_type and issubclass(exc_type, SyntaxError):

[513] Fix | Delete

# Handle SyntaxError's specially

[514] Fix | Delete

self.filename = exc_value.filename

[515] Fix | Delete

self.lineno = str(exc_value.lineno)

[516] Fix | Delete

self.text = exc_value.text

[517] Fix | Delete

self.offset = exc_value.offset

[518] Fix | Delete

self.msg = exc_value.msg

[519] Fix | Delete

if lookup_lines:

[520] Fix | Delete

self._load_lines()

[521] Fix | Delete

[522] Fix | Delete

@classmethod

[523] Fix | Delete

def from_exception(cls, exc, *args, **kwargs):

[524] Fix | Delete

"""Create a TracebackException from an exception."""

[525] Fix | Delete

return cls(type(exc), exc, exc.__traceback__, *args, **kwargs)

[526] Fix | Delete

[527] Fix | Delete

def _load_lines(self):

[528] Fix | Delete

"""Private API. force all lines in the stack to be loaded."""

[529] Fix | Delete

for frame in self.stack:

[530] Fix | Delete

frame.line

[531] Fix | Delete

if self.__context__:

[532] Fix | Delete

self.__context__._load_lines()

[533] Fix | Delete

if self.__cause__:

[534] Fix | Delete

self.__cause__._load_lines()

[535] Fix | Delete

[536] Fix | Delete

def __eq__(self, other):

[537] Fix | Delete

return self.__dict__ == other.__dict__

[538] Fix | Delete

[539] Fix | Delete

def __str__(self):

[540] Fix | Delete

return self._str

[541] Fix | Delete

[542] Fix | Delete

def format_exception_only(self):

[543] Fix | Delete

"""Format the exception part of the traceback.

[544] Fix | Delete

[545] Fix | Delete

The return value is a generator of strings, each ending in a newline.

[546] Fix | Delete

[547] Fix | Delete

Normally, the generator emits a single string; however, for

[548] Fix | Delete

SyntaxError exceptions, it emites several lines that (when

[549] Fix | Delete

printed) display detailed information about where the syntax

[550] Fix | Delete

error occurred.

[551] Fix | Delete

[552] Fix | Delete

The message indicating which exception occurred is always the last

[553] Fix | Delete

string in the output.

[554] Fix | Delete

"""

[555] Fix | Delete

if self.exc_type is None:

[556] Fix | Delete

yield _format_final_exc_line(None, self._str)

[557] Fix | Delete

return

[558] Fix | Delete

[559] Fix | Delete

stype = self.exc_type.__qualname__

[560] Fix | Delete

smod = self.exc_type.__module__

[561] Fix | Delete

if smod not in ("__main__", "builtins"):

[562] Fix | Delete

stype = smod + '.' + stype

[563] Fix | Delete

[564] Fix | Delete

if not issubclass(self.exc_type, SyntaxError):

[565] Fix | Delete

yield _format_final_exc_line(stype, self._str)

[566] Fix | Delete

return

[567] Fix | Delete

[568] Fix | Delete

# It was a syntax error; show exactly where the problem was found.

[569] Fix | Delete

filename = self.filename or "<string>"

[570] Fix | Delete

lineno = str(self.lineno) or '?'

[571] Fix | Delete

yield ' File "{}", line {}\n'.format(filename, lineno)

[572] Fix | Delete

[573] Fix | Delete

badline = self.text

[574] Fix | Delete

offset = self.offset

[575] Fix | Delete

if badline is not None:

[576] Fix | Delete

yield ' {}\n'.format(badline.strip())

[577] Fix | Delete

if offset is not None:

[578] Fix | Delete

caretspace = badline.rstrip('\n')

[579] Fix | Delete

offset = min(len(caretspace), offset) - 1

[580] Fix | Delete

caretspace = caretspace[:offset].lstrip()

[581] Fix | Delete

# non-space whitespace (likes tabs) must be kept for alignment

[582] Fix | Delete

caretspace = ((c.isspace() and c or ' ') for c in caretspace)

[583] Fix | Delete

yield ' {}^\n'.format(''.join(caretspace))

[584] Fix | Delete

msg = self.msg or "<no detail available>"

[585] Fix | Delete

yield "{}: {}\n".format(stype, msg)

[586] Fix | Delete

[587] Fix | Delete

def format(self, *, chain=True):

[588] Fix | Delete

"""Format the exception.

[589] Fix | Delete

[590] Fix | Delete

If chain is not *True*, *__cause__* and *__context__* will not be formatted.

[591] Fix | Delete

[592] Fix | Delete

The return value is a generator of strings, each ending in a newline and

[593] Fix | Delete

some containing internal newlines. `print_exception` is a wrapper around

[594] Fix | Delete

this method which just prints the lines to a file.

[595] Fix | Delete

[596] Fix | Delete

The message indicating which exception occurred is always the last

[597] Fix | Delete

string in the output.

[598] Fix | Delete

"""

[599] Fix | Delete

if chain:

[600] Fix | Delete

if self.__cause__ is not None:

[601] Fix | Delete

yield from self.__cause__.format(chain=chain)

[602] Fix | Delete

yield _cause_message

[603] Fix | Delete

elif (self.__context__ is not None and

[604] Fix | Delete

not self.__suppress_context__):

[605] Fix | Delete

yield from self.__context__.format(chain=chain)

[606] Fix | Delete

yield _context_message

[607] Fix | Delete

if self.exc_traceback is not None:

[608] Fix | Delete

yield 'Traceback (most recent call last):\n'

[609] Fix | Delete

yield from self.stack.format()

[610] Fix | Delete

yield from self.format_exception_only()

[611] Fix | Delete

[612] Fix | Delete