mirror of
https://github.com/Stone-Red-Code/dvc.git
synced 2026-11-05 15:28:27 +01:00
Saugat Pachhai
b9000ed926
* pre-commit: update black to 21.5b1 also updated others, but black is more noticeable * remove magic trailing comma
92 lines
2.3 KiB
Python
92 lines
2.3 KiB
Python
from contextlib import ExitStack, contextmanager
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from typing import TYPE_CHECKING
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if TYPE_CHECKING:
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from argparse import Namespace
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@contextmanager
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def instrument(html_output=False):
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"""Run a statistical profiler"""
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try:
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from pyinstrument import Profiler # pylint: disable=import-error
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except ImportError:
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print("Failed to run profiler, pyinstrument is not installed")
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yield
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return
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profiler = Profiler()
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profiler.start()
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yield
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profiler.stop()
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if html_output:
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profiler.open_in_browser()
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return
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print(profiler.output_text(unicode=True, color=True))
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@contextmanager
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def profile(dump_path: str = None):
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"""Run a cprofile"""
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import cProfile
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prof = cProfile.Profile()
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prof.enable()
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yield
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prof.disable()
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if not dump_path:
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prof.print_stats(sort="cumtime")
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return
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prof.dump_stats(dump_path)
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@contextmanager
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def debug():
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try:
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yield
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except Exception: # pylint: disable=broad-except
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try:
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import ipdb as pdb # noqa: T100, pylint: disable=import-error
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except ImportError:
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import pdb # noqa: T100
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pdb.post_mortem()
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raise # prevent from jumping ahead
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@contextmanager
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def debugtools(args: "Namespace" = None, **kwargs):
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kw = vars(args) if args else {}
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kw.update(kwargs)
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with ExitStack() as stack:
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if kw.get("pdb"):
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stack.enter_context(debug())
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if kw.get("cprofile") or kw.get("cprofile_dump"):
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stack.enter_context(profile(kw.get("cprofile_dump")))
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if kw.get("instrument") or kw.get("instrument_open"):
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stack.enter_context(instrument(kw.get("instrument_open", False)))
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yield
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def add_debugging_flags(parser):
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from argparse import SUPPRESS
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parser.add_argument(
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"--cprofile", action="store_true", default=False, help=SUPPRESS
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)
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parser.add_argument("--cprofile-dump", help=SUPPRESS)
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parser.add_argument(
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"--pdb", action="store_true", default=False, help=SUPPRESS
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)
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parser.add_argument(
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"--instrument", action="store_true", default=False, help=SUPPRESS
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)
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parser.add_argument(
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"--instrument-open", action="store_true", default=False, help=SUPPRESS
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)
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