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Diffstat (limited to 'Doc/using/cmdline.rst')
| -rw-r--r-- | Doc/using/cmdline.rst | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Doc/using/cmdline.rst b/Doc/using/cmdline.rst index 5adad15..9c1c269 100644 --- a/Doc/using/cmdline.rst +++ b/Doc/using/cmdline.rst @@ -407,6 +407,10 @@ Miscellaneous options * ``-X showalloccount`` to output the total count of allocated objects for each type when the program finishes. This only works when Python was built with ``COUNT_ALLOCS`` defined. + * ``-X importtime`` to show how long each import takes. It shows module name, + cumulative time (including nested imports) and self time (exluding nested + imports). Note that its output may be broken in multi threaded application. + Typical usage is ``python3 -X importtime -c 'import asyncio'``. It also allows passing arbitrary values and retrieving them through the :data:`sys._xoptions` dictionary. @@ -423,6 +427,9 @@ Miscellaneous options .. versionadded:: 3.6 The ``-X showalloccount`` option. + .. versionadded:: 3.7 + The ``-X importtime`` option. + Options you shouldn't use ~~~~~~~~~~~~~~~~~~~~~~~~~ |