LGTM.com - false positive: 0 != None

[gpotter2]

Platform: Python

Description of the false positive

Apparently

if n == 0:
    print("a")
elif not n:
    print("b")
else:
    print("c")

Shows the elif as dead code. However if n is None it will get triggered.

URL to the alert on the project page on LGTM.com: https://lgtm.com/projects/g/secdev/scapy/snapshot/4d06eb2812a98a1001478bf06e033fbbb2afbef7/files/scapy/volatile.py?sort=name&dir=ASC&mode=heatmap#xf144c20a181fcce0:1