Sensor breaks with pyasn1 package

[elgris]

Basically, you can find the suspect here:

meter.py

...
    def collect_modules(self):
        try:
            m = sys.modules
            r = {}
            for k in m:
                if m[k]:
                    d = m[k].__dict__
                    if "version" in d and d["version"]:
                        r[k] = self.jsonable(d["version"])
                    elif "__version__" in d and d["__version__"]:
                        r[k] = self.jsonable(d["__version__"])
                    else:
                        r[k] = "builtin"

            return r
        except Exception as e:
            l.error("collect_modules: ", str(e))

            return None
...

Following line of code fails if module pyasn1 is being processed:

if "version" in d and d["version"]

exception thrown is pyasn1.error.PyAsn1Error: Uninitialized ASN.1 value ("__nonzero__" attribute looked up)

This problem came from package pysnmp which imports pyasn1

Snippet to reproduce

You can reproduce this problem with a small snippet

import sys
from pysnmp.entity.rfc3413.oneliner import cmdgen

m = sys.modules
r = {}
for k in m:
    if m[k]:
        d = m[k].__dict__
        if "version" in d and d["version"]:
            r[k] = d["version"]
        elif "__version__" in d and d["__version__"]:
            r[k] = d["__version__"]
        else:
            r[k] = "builtin"
print(r)

[elgris]

Just in case: pyasn1-0.3.5 was used

[pglombardo]

Thanks @elgris - this was very helpful. Fixed in #24