diff options
Diffstat (limited to 'Lib/traceback.py')
| -rw-r--r-- | Lib/traceback.py | 28 |
1 files changed, 25 insertions, 3 deletions
diff --git a/Lib/traceback.py b/Lib/traceback.py index c5fd61716c..09bda717ad 100644 --- a/Lib/traceback.py +++ b/Lib/traceback.py @@ -385,9 +385,30 @@ class StackSummary(list): resulting list corresponds to a single frame from the stack. Each string ends in a newline; the strings may contain internal newlines as well, for those items with source text lines. + + For long sequences of the same frame and line, the first few + repetitions are shown, followed by a summary line stating the exact + number of further repetitions. """ result = [] + last_file = None + last_line = None + last_name = None + count = 0 for frame in self: + if (last_file is not None and last_file == frame.filename and + last_line is not None and last_line == frame.lineno and + last_name is not None and last_name == frame.name): + count += 1 + else: + if count > 3: + result.append(f' [Previous line repeated {count-3} more times]\n') + last_file = frame.filename + last_line = frame.lineno + last_name = frame.name + count = 0 + if count >= 3: + continue row = [] row.append(' File "{}", line {}, in {}\n'.format( frame.filename, frame.lineno, frame.name)) @@ -397,6 +418,8 @@ class StackSummary(list): for name, value in sorted(frame.locals.items()): row.append(' {name} = {value}\n'.format(name=name, value=value)) result.append(''.join(row)) + if count > 3: + result.append(f' [Previous line repeated {count-3} more times]\n') return result @@ -487,10 +510,9 @@ class TracebackException: self._load_lines() @classmethod - def from_exception(self, exc, *args, **kwargs): + def from_exception(cls, exc, *args, **kwargs): """Create a TracebackException from an exception.""" - return TracebackException( - type(exc), exc, exc.__traceback__, *args, **kwargs) + return cls(type(exc), exc, exc.__traceback__, *args, **kwargs) def _load_lines(self): """Private API. force all lines in the stack to be loaded.""" |