mirror of https://github.com/python/cpython
gh-90300: Sort the -X options and some envvars in the Python CLI help (GH-116739)
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@ -187,19 +187,9 @@ arg ...: arguments passed to program in sys.argv[1:]\n\
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static const char usage_xoptions[] = "\
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The following implementation-specific options are available:\n\
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-X faulthandler: enable faulthandler\n\
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-X showrefcount: output the total reference count and number of used\n\
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memory blocks when the program finishes or after each statement in\n\
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the interactive interpreter. This only works on debug builds\n\
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-X tracemalloc: start tracing Python memory allocations using the\n\
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tracemalloc module. By default, only the most recent frame is stored\n\
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in a traceback of a trace. Use -X tracemalloc=NFRAME to start\n\
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tracing with a traceback limit of NFRAME frames\n\
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-X importtime: show how long each import takes. It shows module name,\n\
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cumulative time (including nested imports) and self time (excluding\n\
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nested imports). Note that its output may be broken in\n\
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multi-threaded application.\n\
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Typical usage is python3 -X importtime -c 'import asyncio'\n\
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-X cpu_count=[n|default]: Override the return value of os.cpu_count(),\n\
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os.process_cpu_count(), and multiprocessing.cpu_count(). This can\n\
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help users who need to limit resources in a container.\n\
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-X dev : enable CPython's \"development mode\", introducing additional runtime\n\
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checks which are too expensive to be enabled by default. Effect of\n\
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the developer mode:\n\
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@ -211,12 +201,18 @@ The following implementation-specific options are available:\n\
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* Enable asyncio debug mode\n\
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* Set the dev_mode attribute of sys.flags to True\n\
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* io.IOBase destructor logs close() exceptions\n\
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-X utf8: enable UTF-8 mode for operating system interfaces, overriding the\n\
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default locale-aware mode. -X utf8=0 explicitly disables UTF-8 mode\n\
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(even when it would otherwise activate automatically)\n\
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-X pycache_prefix=PATH: enable writing .pyc files to a parallel tree rooted\n\
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at the given directory instead of to the code tree\n\
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-X warn_default_encoding: enable opt-in EncodingWarning for 'encoding=None'\n\
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-X faulthandler: enable faulthandler\n\
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-X frozen_modules=[on|off]: whether or not frozen modules should be used.\n\
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The default is \"on\" (or \"off\" if you are running a local build).\n\
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-X importtime: show how long each import takes. It shows module name,\n\
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cumulative time (including nested imports) and self time (excluding\n\
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nested imports). Note that its output may be broken in\n\
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multi-threaded application.\n\
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Typical usage is python3 -X importtime -c 'import asyncio'\n\
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-X int_max_str_digits=number: limit the size of int<->str conversions.\n\
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This helps avoid denial of service attacks when parsing untrusted\n\
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data. The default is sys.int_info.default_max_str_digits.\n\
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0 disables.\n\
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-X no_debug_ranges: disable the inclusion of the tables mapping extra location\n\
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information (end line, start column offset and end column offset) to\n\
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every instruction in code objects. This is useful when smaller code\n\
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@ -227,23 +223,30 @@ The following implementation-specific options are available:\n\
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profiler will be able to report Python calls. This option is only\n\
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available on some platforms and will do nothing if is not supported\n\
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on the current system. The default value is \"off\".\n\
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-X frozen_modules=[on|off]: whether or not frozen modules should be used.\n\
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The default is \"on\" (or \"off\" if you are running a local build).\n\
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-X int_max_str_digits=number: limit the size of int<->str conversions.\n\
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This helps avoid denial of service attacks when parsing untrusted\n\
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data. The default is sys.int_info.default_max_str_digits.\n\
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0 disables.\n\
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-X cpu_count=[n|default]: Override the return value of os.cpu_count(),\n\
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os.process_cpu_count(), and multiprocessing.cpu_count(). This can\n\
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help users who need to limit resources in a container."
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#ifdef Py_STATS
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"\n\
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-X pystats: Enable pystats collection at startup."
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#endif
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"
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#ifdef Py_DEBUG
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"\n\
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-X presite=package.module: import this module before site.py is run."
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"-X presite=package.module: import this module before site.py is run.\n"
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#endif
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"\
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-X pycache_prefix=PATH: enable writing .pyc files to a parallel tree rooted\n\
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at the given directory instead of to the code tree\n\
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"
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#ifdef Py_STATS
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"-X pystats: Enable pystats collection at startup.\n"
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#endif
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"\
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-X showrefcount: output the total reference count and number of used\n\
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memory blocks when the program finishes or after each statement in\n\
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the interactive interpreter. This only works on debug builds\n\
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-X tracemalloc: start tracing Python memory allocations using the\n\
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tracemalloc module. By default, only the most recent frame is stored\n\
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in a traceback of a trace. Use -X tracemalloc=NFRAME to start\n\
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tracing with a traceback limit of NFRAME frames\n\
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-X utf8: enable UTF-8 mode for operating system interfaces, overriding the\n\
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default locale-aware mode. -X utf8=0 explicitly disables UTF-8 mode\n\
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(even when it would otherwise activate automatically)\n\
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-X warn_default_encoding: enable opt-in EncodingWarning for 'encoding=None'\
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"
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;
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/* Envvars that don't have equivalent command-line options are listed first */
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@ -310,16 +313,16 @@ static const char usage_envvars[] =
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" (-X int_max_str_digits=number)\n"
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"PYTHONNOUSERSITE: disable user site directory (-s)\n"
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"PYTHONOPTIMIZE : enable level 1 optimizations (-O)\n"
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"PYTHONSAFEPATH : don't prepend a potentially unsafe path to sys.path.\n"
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"PYTHONUNBUFFERED: disable stdout/stderr buffering (-u)\n"
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"PYTHONVERBOSE : trace import statements (-v)\n"
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"PYTHONWARNINGS=arg: warning control (-W arg)\n"
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#ifdef Py_STATS
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"PYTHONSTATS : turns on statistics gathering\n"
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#endif
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#ifdef Py_DEBUG
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"PYTHON_PRESITE=pkg.mod: import this module before site.py is run\n"
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#endif
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"PYTHONSAFEPATH : don't prepend a potentially unsafe path to sys.path.\n"
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#ifdef Py_STATS
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"PYTHONSTATS : turns on statistics gathering\n"
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#endif
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"PYTHONUNBUFFERED: disable stdout/stderr buffering (-u)\n"
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"PYTHONVERBOSE : trace import statements (-v)\n"
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"PYTHONWARNINGS=arg: warning control (-W arg)\n"
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;
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#if defined(MS_WINDOWS)
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