Catch TypeError together with OSError when inspect source

[gaogaotiantian]

close #111

[codecov-commenter]

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (a950dba) to head (5544a95).
Report is 1 commits behind head on master.

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Additional details and impacted files

@@            Coverage Diff            @@
##            master      #115   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            5         5           
  Lines          374       374           
=========================================
  Hits           374       374           

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