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SF patch #467455 : Enhanced environment variables, by Toby Dickenson. 

This patch changes to logic to:

   if env.var. set and non-empty:
       if env.var. is an integer:
           set flag to that integer
   if flag is zero: # [actually, <= 0 --GvR]
       set flag to 1

   Under this patch, anyone currently using
   PYTHONVERBOSE=yes will get the same output as before.

   PYTHONVERBNOSE=2 will generate more verbosity than
   before.

   The only unusual case that the following three are
   still all equivalent:
   PYTHONVERBOSE=yespleas
   PYTHONVERBOSE=1
   PYTHONVERBOSE=0
This commit is contained in:
Guido van Rossum 2001-10-12 22:17:56 +00:00
parent 1566a17af5
commit 9abaf4d3b7
2 changed files with 22 additions and 5 deletions
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10
Misc/python.man
View File

@ -339,9 +339,14 @@ Set this to a non-empty string to cause the \fItime\fP module to
require dates specified as strings to include 4-digit years, otherwise
2-digit years are converted based on rules described in the \fItime\fP
module documnetation.
.IP PYTHONOPTIMIZE
If this is set to a non-empty string it is equivalent to specifying
the \fB\-O\fP option. If set to an integer, it is equivalent to
specifying \fB\-O\fP multiple times.
.IP PYTHONDEBUG
If this is set to a non-empty string it is equivalent to specifying
the \fB\-d\fP option.
the \fB\-d\fP option. If set to an integer, it is equivalent to
specifying \fB\-d\fP multiple times.
.IP PYTHONINSPECT
If this is set to a non-empty string it is equivalent to specifying
the \fB\-i\fP option.
@ -350,7 +355,8 @@ If this is set to a non-empty string it is equivalent to specifying
the \fB\-u\fP option.
.IP PYTHONVERBOSE
If this is set to a non-empty string it is equivalent to specifying
the \fB\-v\fP option.
the \fB\-v\fP option. If set to an integer, it is equivalent to
specifying \fB\-v\fP multiple times.
.SH AUTHOR
.nf
Guido van Rossum

17
Python/pythonrun.c
View File

@ -87,6 +87,17 @@ Py_IsInitialized(void)
*/
static int
add_flag(int flag, const char *envs)
{
int env = atoi(envs);
if (flag < env)
flag = env;
if (flag < 1)
flag = 1;
return flag;
}
void
Py_Initialize(void)
{
@ -101,11 +112,11 @@ Py_Initialize(void)
initialized = 1;
if ((p = Py_GETENV("PYTHONDEBUG")) && *p != '\0')
Py_DebugFlag = Py_DebugFlag ? Py_DebugFlag : 1;
Py_DebugFlag = add_flag(Py_DebugFlag, p);
if ((p = Py_GETENV("PYTHONVERBOSE")) && *p != '\0')
Py_VerboseFlag = Py_VerboseFlag ? Py_VerboseFlag : 1;
Py_VerboseFlag = add_flag(Py_VerboseFlag, p);
if ((p = Py_GETENV("PYTHONOPTIMIZE")) && *p != '\0')
Py_OptimizeFlag = Py_OptimizeFlag ? Py_OptimizeFlag : 1;
Py_OptimizeFlag = add_flag(Py_OptimizeFlag, p);
interp = PyInterpreterState_New();
if (interp == NULL)