1  EInk_Autostereograms/boot.py 21: Comparison 'button != None' should be 'button is not None' (singleton-comparison)
2  EInk_Autostereograms/code.py 52: Useless return at end of function or method (useless-return)
3  EInk_Autostereograms/code.py 138: Useless return at end of function or method (useless-return)
4  EInk_Autostereograms/code.py 155: Useless return at end of function or method (useless-return)
5  EInk_Autostereograms/code.py 165: Useless return at end of function or method (useless-return)
6  EInk_Autostereograms/code.py 284: Simplify chained comparison between the operands (chained-comparison)
7  EInk_Autostereograms/code.py 193: Useless return at end of function or method (useless-return)