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#!/usr/bin/env python3
# Filters traceback lines from stdin.
import io
import sys
if sys.version_info[0] >= 3:
# Prevent \r from being inserted on Windows.
sys.stdout = io.TextIOWrapper(
sys.stdout.buffer,
sys.stdout.encoding,
sys.stdout.errors,
newline="\n",
line_buffering=sys.stdout.line_buffering,
)
state = 'none'
for line in sys.stdin:
if state == 'none':
if line.startswith('Traceback '):
state = 'tb'
elif state == 'tb':
if line.startswith(' File '):
state = 'file'
continue
elif not line.startswith(' '):
state = 'none'
elif not line.replace('^', '').replace('~', '').strip():
# PEP 657: Fine-grained error locations in tracebacks
# ~~~~~~^^^^^^^^^
continue
elif state == 'file':
# Ignore lines after " File "
state = 'tb'
continue
print(line, end='')
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