You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
50 lines
1.2 KiB
50 lines
1.2 KiB
""" |
|
atexit.py - allow programmer to define multiple exit functions to be executed |
|
upon normal program termination. |
|
|
|
One public function, register, is defined. |
|
""" |
|
|
|
__all__ = ["register"] |
|
|
|
_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.pop() |
|
apply(func, targs, kargs) |
|
|
|
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 |
|
if hasattr(sys, "exitfunc"): |
|
# Assume it's another registered exit function - append it to our list |
|
register(sys.exitfunc) |
|
sys.exitfunc = _run_exitfuncs |
|
|
|
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")
|
|
|