Is there anyway to catch a SIGSEGV signal that results from an import?
I'd like to get a list of all modules on the sys.path. The module
pkgutil has a nice method, walk_packages, to do just that. But, there
is a third party extension that throws a SIGSEGV when imported. I
tried to create a signal handler with the signal module like:
#!/bin/env python
import pkgutil
import signal
import traceback
def handler(signal, stackframe):
raise ImportError
# Handle seg faults that may occur during an import
signal.signal(signal.SIGSEGV, handler)
if __name__ == "__main__":
goodMods = []
def onerror(pkgName):
sys.stdout.write('Unable to import package %s\n' % pkgName)
traceback.print_exc(file=sys.stdout)
sys.stdout.write('\n')
#sys.stdout.flush()
for importer, mod, ispkg in pkgutil.walk_packages(path=None,
onerror=onerror):
goodMods.append(mod)
for m in goodMods:
sys.stdout.write(m + '\n')
sys.stdout.flush()
This sometimes works. But, since SIGSEGV is asynchronous it is not
guaranteed to work all the time. In general, is there anyway to catch
a SIGSEGV on import? If so, is there a way to use that with
pkgutil.walk_packages to get all the modules on sys.path?
Thanks,
Ryan
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