Declare types for Result and CheckerResult

[kiritofeng]

Fixes a bug where interactive problems will crash upon grading a Java submission that returns IR due to result.proc_output being the empty string '' by default. result.proc_output should now always be a bytestring.

[Xyene]

LGTM, thanks!

[codecov-commenter]

Codecov Report

Base: 81.90% // Head: 81.50% // Decreases project coverage by -0.41% ⚠️

Coverage data is based on head (6541eba) compared to base (2ba1442).
Patch coverage: 87.09% of modified lines in pull request are covered.

📣 This organization is not using Codecov’s GitHub App Integration. We recommend you install it so Codecov can continue to function properly for your repositories. Learn more

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1106      +/-   ##
==========================================
- Coverage   81.90%   81.50%   -0.41%     
==========================================
  Files         139      139              
  Lines        5008     5013       +5     
==========================================
- Hits         4102     4086      -16     
- Misses        906      927      +21     

Impacted Files	Coverage Δ
dmoj/result.py	80.48% <86.20%> (-3.93%)	⬇️
dmoj/executors/base_executor.py	85.85% <100.00%> (-1.02%)	⬇️
dmoj/judge.py	53.33% <100.00%> (ø)
dmoj/utils/communicate.py	88.15% <0.00%> (-5.27%)	⬇️
dmoj/cptbox/isolate.py	48.17% <0.00%> (-3.05%)	⬇️
dmoj/cptbox/compiler_isolate.py	46.80% <0.00%> (-2.13%)	⬇️
dmoj/cptbox/tracer.py	58.30% <0.00%> (-2.13%)	⬇️
dmoj/executors/java_executor.py	84.39% <0.00%> (-0.98%)	⬇️
... and 1 more

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

☔ View full report at Codecov.
📢 Do you have feedback about the report comment? Let us know in this issue.