Lines Matching +full:before +full:- +full:script
4 .\" groff -Tascii -man python.man | less
7 python \- an interpreted, interactive, object-oriented programming language
11 .B \-B
14 .B \-b
17 .B \-d
20 .B \-E
23 .B \-h
26 .B \-i
29 .B \-I
33 .B \-m
34 .I module-name
37 .B \-q
40 .B \-O
43 .B \-OO
46 .B \-P
49 .B \-s
52 .B \-S
55 .B \-u
59 .B \-v
62 .B \-V
65 .B \-W
69 .B \-x
72 .B \-X
76 .B \-?
80 .B \--check-hash-based-pycs
89 .B \--help
92 .B \--help-env
95 .B \--help-xoptions
98 .B \--help-all
102 .B \-c
105 .I script
107 \-
113 Python is an interpreted, interactive, object-oriented programming
116 The Python Library Reference documents built-in and standard types,
137 .B \-B
142 .B \-b
144 and comparing bytes/bytearray with str. (-bb: issue errors)
146 .BI "\-c " command
151 .BI "\-\-check-hash-based-pycs " mode
152 Configure how Python evaluates the up-to-dateness of hash-based .pyc files.
154 .B \-d
158 .B \-E
162 .B \-h ", " \-? ", "\-\-help
165 .B "\-\-help\-env"
166 Prints help about Python-specific environment variables and exits.
168 .B "\-\-help\-xoptions"
169 Prints help about implementation-specific \fB\-X\fP options and exits.
172 .B "\-\-help\-all"
175 .B \-i
176 When a script is passed as first argument or the \fB\-c\fP option is
177 used, enter interactive mode after executing the script or the
179 useful to inspect global variables or a stack trace when a script
182 .B \-I
183 Run Python in isolated mode. This also implies \fB\-E\fP, \fB\-P\fP and \fB\-s\fP. In
184 isolated mode sys.path contains neither the script's directory nor the user's
185 site-packages directory. All PYTHON* environment variables are ignored, too.
189 .BI "\-m " module-name
194 file as a script. This terminates the option list (following options
197 .B \-O
200 adding .opt-1 before the .pyc extension.
202 .B \-OO
203 Do \fB-O\fP and also discard docstrings; change the filename for
204 compiled (bytecode) files by adding .opt-2 before the .pyc extension.
206 .B \-P
208 as the current directory, the script's directory or an empty string. See also the
211 .B \-q
213 also suppressed in non-interactive mode.
215 .B \-s
218 .B \-S
221 and the site-dependent manipulations of
227 .B \-u
231 .B \-v
233 (filename or built-in module) from which it is loaded. When given
238 .B \-V ", " \-\-version
243 .BI "\-W " argument
251 -Wdefault # Warn once per call location
252 -Werror # Convert to exceptions
253 -Walways # Warn every time
254 -Wmodule # Warn once per calling module
255 -Wonce # Warn once per Python process
256 -Wignore # Never warn
260 .B -Wi
262 .B -Wignore .
269 .B -W ignore::DeprecationWarning
280 case-insensitive.
290 field matches the (fully-qualified) module name; this match is case-sensitive.
298 .B -W
301 .B -W
312 .BI "\-X " option
313 Set implementation-specific option. The following options are available:
315 -X faulthandler: enable faulthandler
317 -X showrefcount: output the total reference count and number of used
321 -X tracemalloc: start tracing Python memory allocations using the
323 traceback of a trace. Use -X tracemalloc=NFRAME to start tracing with a
326 -X importtime: show how long each import takes. It shows module name,
328 nested imports). Note that its output may be broken in multi-threaded
329 application. Typical usage is python3 -X importtime -c 'import asyncio'
331 -X dev: enable CPython's "development mode", introducing additional runtime
335 * Add default warning filter, as -W default
343 -X utf8: enable UTF-8 mode for operating system interfaces, overriding the default
344 locale-aware mode. -X utf8=0 explicitly disables UTF-8 mode (even when it would
347 -X pycache_prefix=PATH: enable writing .pyc files to a parallel tree rooted at the
350 -X warn_default_encoding: enable opt-in EncodingWarning for 'encoding=None'
352 -X no_debug_ranges: disable the inclusion of the tables mapping extra location
358 -X frozen_modules=[on|off]: whether or not frozen modules should be used.
361 -X int_max_str_digits=number: limit the size of int<->str conversions.
366 .B \-x
376 .I script
379 .B \-c
387 In non-interactive mode, the entire input is parsed before it is
390 If available, the script name and additional arguments thereafter are
391 passed to the script in the Python variable
396 If no script name is given,
399 .B \-c
403 .I '-c'.
416 control returns to the primary prompt; in non-interactive mode, the
426 conventions; ${prefix} and ${exec_prefix} are installation-dependent
450 If this is set to a non-empty string, don't automatically prepend a potentially
451 unsafe path to \fBsys.path\fP such as the current directory, the script's
452 directory or an empty string. See also the \fB\-P\fP option.
457 are installation-dependent directories, both defaulting to
465 Non-existent directories are silently ignored.
469 If a script argument is given, the directory containing the script is
478 file are executed before the first prompt is displayed in interactive
489 If this is set to a non-empty string it is equivalent to specifying
490 the \fB\-O\fP option. If set to an integer, it is equivalent to
491 specifying \fB\-O\fP multiple times.
493 If this is set to a non-empty string it is equivalent to specifying
494 the \fB\-d\fP option. If set to an integer, it is equivalent to
495 specifying \fB\-d\fP multiple times.
497 If this is set to a non-empty string it is equivalent to specifying
498 the \fB\-B\fP option (don't try to write
502 If this is set to a non-empty string it is equivalent to specifying
503 the \fB\-i\fP option.
505 If this is set before running the interpreter, it overrides the encoding used
514 If this is set to a non-empty string it is equivalent to specifying the
515 \fB\-s\fP option (Don't add the user site directory to sys.path).
517 If this is set to a non-empty string it is equivalent to specifying
518 the \fB\-u\fP option.
520 If this is set to a non-empty string it is equivalent to specifying
521 the \fB\-v\fP option. If set to an integer, it is equivalent to
522 specifying \fB\-v\fP multiple times.
524 If this is set to a comma-separated string it is equivalent to
525 specifying the \fB\-W\fP option for each separate value.
560 If set to a non-empty string, Python will print statistics of the pymalloc
570 If this environment variable is set to a non-empty string, enable the debug
573 If this environment variable is set to a non-empty string, start tracing
581 If this environment variable is set to a non-empty string,
586 This is equivalent to the \fB-X faulthandler\fP option.
594 .IR site-packages
596 .IR "python setup\.py install \-\-user" .
598 If this environment variable is set to a non-empty string, Python will
600 \fB\-X importtime\fP on the command line.
604 .SS Debug-mode variables
607 \fB\--with-pydebug\fP build option.