Sniffer in thread

[RaphaelBecker]

stable

[lgtm-com[bot]]

This pull request introduces 11 alerts and fixes 1 when merging 1e7ffced7e638d03a070501824e8f5d5c5c7c3ea into e4a98152bf7af10df93bf1865f7c04608b753bfb - view on LGTM.com

new alerts:

• 4 for Unreachable code
• 2 for Unused local variable
• 1 for Unnecessary pass
• 1 for Constant in conditional expression or statement
• 1 for Except block handles 'BaseException'
• 1 for Unused import
• 1 for Module is imported with 'import' and 'import from'

fixed alerts:

• 1 for Missing call to `__init__` during object initialization

[RaphaelBecker]

it was not intended to merge into the master of nccgroup