Patch #602345 by Neal Norwitz and me: add -B option and PYTHONDONTWRITEBYTECODE envvar to skip writing bytecode.

1 files changed, 14 insertions, 6 deletions

diff --git a/Modules/main.c b/Modules/main.c
index 26f8780..71c9c59 100644
--- a/Modules/main.c
+++ b/Modules/main.c
@@ -40,7 +40,7 @@ static char **orig_argv;
 static int  orig_argc;
 
 /* command line options */
-#define BASE_OPTS "3c:dEhim:OQ:StuUvVW:xX?"
+#define BASE_OPTS "3Bc:dEhim:OQ:StuUvVW:xX?"
 
 #ifndef RISCOS
 #define PROGRAM_OPTS BASE_OPTS
@@ -59,39 +59,42 @@ static char *usage_line =
 /* Long usage message, split into parts < 512 bytes */
 static char *usage_1 = "\
 Options and arguments (and corresponding environment variables):\n\
+-B     : don't write .py[co] files on import; also PYTHONDONTWRITEBYTECODE=x\n\
 -c cmd : program passed in as string (terminates option list)\n\
 -d     : debug output from parser; also PYTHONDEBUG=x\n\
 -E     : ignore environment variables (such as PYTHONPATH)\n\
 -h     : print this help message and exit (also --help)\n\
 -i     : inspect interactively after running script; forces a prompt even\n\
-         if stdin does not appear to be a terminal; also PYTHONINSPECT=x\n\
 ";
 static char *usage_2 = "\
+         if stdin does not appear to be a terminal; also PYTHONINSPECT=x\n\
 -m mod : run library module as a script (terminates option list)\n\
 -O     : optimize generated bytecode slightly; also PYTHONOPTIMIZE=x\n\
 -OO    : remove doc-strings in addition to the -O optimizations\n\
 -Q arg : division options: -Qold (default), -Qwarn, -Qwarnall, -Qnew\n\
 -S     : don't imply 'import site' on initialization\n\
 -t     : issue warnings about inconsistent tab usage (-tt: issue errors)\n\
--u     : unbuffered binary stdout and stderr; also PYTHONUNBUFFERED=x\n\
 ";
 static char *usage_3 = "\
+-u     : unbuffered binary stdout and stderr; also PYTHONUNBUFFERED=x\n\
          see man page for details on internal buffering relating to '-u'\n\
 -v     : verbose (trace import statements); also PYTHONVERBOSE=x\n\
          can be supplied multiple times to increase verbosity\n\
 -V     : print the Python version number and exit (also --version)\n\
 -W arg : warning control; arg is action:message:category:module:lineno\n\
 -x     : skip first line of source, allowing use of non-Unix forms of #!cmd\n\
+";
+static char *usage_4 = "\
 -3     : warn about Python 3.x incompatibilities\n\
 file   : program read from script file\n\
 -      : program read from stdin (default; interactive mode if a tty)\n\
-";
-static char *usage_4 = "\
 arg ...: arguments passed to program in sys.argv[1:]\n\n\
 Other environment variables:\n\
 PYTHONSTARTUP: file executed on interactive startup (no default)\n\
 PYTHONPATH   : '%c'-separated list of directories prefixed to the\n\
                default module search path.  The result is sys.path.\n\
+";
+static char *usage_5 = "\
 PYTHONHOME   : alternate <prefix> directory (or <prefix>%c<exec_prefix>).\n\
                The default module search path uses %s.\n\
 PYTHONCASEOK : ignore case in 'import' statements (Windows).\n\
@@ -110,7 +113,8 @@ usage(int exitcode, char* program)
 		fprintf(f, usage_1);
 		fprintf(f, usage_2);
 		fprintf(f, usage_3);
-		fprintf(f, usage_4, DELIM, DELIM, PYTHONHOMEHELP);
+		fprintf(f, usage_4, DELIM);
+		fprintf(f, usage_5, DELIM, PYTHONHOMEHELP);
 	}
 #if defined(__VMS)
 	if (exitcode == 0) {
@@ -337,6 +341,10 @@ Py_Main(int argc, char **argv)
 			Py_OptimizeFlag++;
 			break;
 
+		case 'B':
+			Py_DontWriteBytecodeFlag++;
+			break;
+
 		case 'S':
 			Py_NoSiteFlag++;
 			break;