[Python-checkins] CVS: python/dist/src/Lib atexit.py,NONE,1.1
Fred L. Drake
python-dev@python.org
Wed, 28 Jun 2000 08:07:40 -0700
Update of /cvsroot/python/python/dist/src/Lib
In directory slayer.i.sourceforge.net:/tmp/cvs-serv8272/Lib
Added Files:
atexit.py
Log Message:
Added the atexit module and documentation from Skip Montanaro
<skip@mojam.com>. Revisions to the markup to make it pass LaTeX, added
an index entry and a reference from the sys.exitfunc documentation.
This closes SourceForge patch #100620.
--- NEW FILE ---
"""
atexit.py - allow programmer to define multiple exit functions to be executed
upon normal program termination.
One public function, register, is defined.
"""
_exithandlers = []
def _run_exitfuncs():
"""run any registered exit functions
_exithandlers is traversed in reverse order so functions are executed
last in, first out.
"""
while _exithandlers:
func, targs, kargs = _exithandlers[-1]
apply(func, targs, kargs)
_exithandlers.remove(_exithandlers[-1])
def register(func, *targs, **kargs):
"""register a function to be executed upon normal program termination
func - function to be called at exit
targs - optional arguments to pass to func
kargs - optional keyword arguments to pass to func
"""
_exithandlers.append((func, targs, kargs))
import sys
try:
x = sys.exitfunc
except AttributeError:
sys.exitfunc = _run_exitfuncs
else:
# if x isn't our own exit func executive, assume it's another
# registered exit function - append it to our list...
if x != _run_exitfuncs:
register(x)
del sys
if __name__ == "__main__":
def x1():
print "running x1"
def x2(n):
print "running x2(%s)" % `n`
def x3(n, kwd=None):
print "running x3(%s, kwd=%s)" % (`n`, `kwd`)
register(x1)
register(x2, 12)
register(x3, 5, "bar")
register(x3, "no kwd args")