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/* Envvars that don't have equivalent command-line options are listed first */ |
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static const char usage_envvars[] = |
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"Environment variables that change behavior:\n" |
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"PYTHONSTARTUP : file executed on interactive startup (no default)\n" |
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"PYTHONPATH : '%lc'-separated list of directories prefixed to the\n" |
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" default module search path. The result is sys.path.\n" |
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"PYTHONHOME : alternate <prefix> directory (or <prefix>%lc<exec_prefix>).\n" |
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" The default module search path uses %s.\n" |
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"PYTHONPLATLIBDIR: override sys.platlibdir\n" |
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"PYTHONCASEOK : ignore case in 'import' statements (Windows)\n" |
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"PYTHONIOENCODING: encoding[:errors] used for stdin/stdout/stderr\n" |
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"PYTHONHASHSEED : if this variable is set to 'random', a random value is used\n" |
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" to seed the hashes of str and bytes objects. It can also be\n" |
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" set to an integer in the range [0,4294967295] to get hash\n" |
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" values with a predictable seed.\n" |
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"PYTHONMALLOC : set the Python memory allocators and/or install debug hooks\n" |
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" on Python memory allocators. Use PYTHONMALLOC=debug to\n" |
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" install debug hooks.\n" |
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"PYTHONCOERCECLOCALE: if this variable is set to 0, it disables the locale\n" |
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" coercion behavior. Use PYTHONCOERCECLOCALE=warn to request\n" |
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" display of locale coercion and locale compatibility warnings\n" |
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" on stderr.\n" |
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"PYTHONBREAKPOINT: if this variable is set to 0, it disables the default\n" |
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" debugger. It can be set to the callable of your debugger of\n" |
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" choice.\n" |
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"PYTHON_COLORS : if this variable is set to 1, the interpreter will colorize\n" |
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" various kinds of output. Setting it to 0 deactivates\n" |
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" this behavior.\n" |
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"PYTHON_HISTORY : the location of a .python_history file.\n" |
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"\n" |
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"These variables have equivalent command-line options (see --help for details):\n" |
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"PYTHON_CPU_COUNT: override the return value of os.cpu_count() (-X cpu_count)\n" |
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"PYTHONDEBUG : enable parser debug mode (-d)\n" |
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"PYTHONDEVMODE : enable Python Development Mode (-X dev)\n" |
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"PYTHONDONTWRITEBYTECODE: don't write .pyc files (-B)\n" |
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"PYTHONFAULTHANDLER: dump the Python traceback on fatal errors (-X faulthandler)\n" |
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"PYTHON_FROZEN_MODULES: whether to use frozen modules; the default is \"on\"\n" |
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" for installed Python and \"off\" for a local build\n" |
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" (-X frozen_modules)\n" |
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#ifdef Py_GIL_DISABLED |
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"PYTHON_GIL : when set to 0, disables the GIL (-X gil)\n" |
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#endif |
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"PYTHONINSPECT : inspect interactively after running script (-i)\n" |
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"PYTHONINTMAXSTRDIGITS: limit the size of int<->str conversions;\n" |
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" 0 disables the limit (-X int_max_str_digits=N)\n" |
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"PYTHONNODEBUGRANGES: don't include extra location information in code objects\n" |
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" (-X no_debug_ranges)\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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"PYTHONPERFSUPPORT: support the Linux \"perf\" profiler (-X perf)\n" |
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#ifdef Py_DEBUG |
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"PYTHON_PRESITE: import this module before site (-X presite)\n" |
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#endif |
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"PYTHONPROFILEIMPORTTIME: show how long each import takes (-X importtime)\n" |
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"PYTHONPYCACHEPREFIX: root directory for bytecode cache (pyc) files\n" |
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" (-X pycache_prefix)\n" |
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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 (-X pystats)\n" |
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#endif |
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"PYTHONTRACEMALLOC: trace Python memory allocations (-X tracemalloc)\n" |
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"PYTHONUNBUFFERED: disable stdout/stderr buffering (-u)\n" |
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"PYTHONUTF8 : control the UTF-8 mode (-X utf8)\n" |
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"PYTHONVERBOSE : trace import statements (-v)\n" |
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"PYTHONWARNDEFAULTENCODING: enable opt-in EncodingWarning for 'encoding=None'\n" |
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" (-X warn_default_encoding)\n" |
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"PYTHONWARNINGS : warning control (-W)\n" |
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; |