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Make --show-traceback the default and add --no-show-traceback #21363

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Make --show-traceback the default and add --no-show-traceback #21363

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e05d478
Make --show-traceback the default and add --no-show-traceback
mcepl Apr 28, 2026
e7a355d
fix: add missing `--tb` option for compatibility with existing scripts
mcepl Apr 29, 2026
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7 changes: 5 additions & 2 deletions mypy/main.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1118,8 +1118,11 @@ def add_invertible_flag(
title="Advanced options", description="Debug and customize mypy internals."
)
internals_group.add_argument("--pdb", action="store_true", help="Invoke pdb on fatal error")
internals_group.add_argument(
"--show-traceback", "--tb", action="store_true", help="Show traceback on fatal error"
add_invertible_flag(
"--show-traceback",
default=True,
help="Show traceback on fatal error",
group=internals_group,
)
internals_group.add_argument(
"--raise-exceptions", action="store_true", help="Raise exception on fatal error"
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