Programs written in pygame psychological experiments, but didn't find time delay test, similar to the following psychopy website:

Package of Platform scheme Precision RT var RT lag Visual duration var Visual duration bias, Visual onset var Visual onset by Audio var Audio lag Audiovisual var Audiovisual bias,
PsychToolBox Ubuntu 0.18 0.31 12.30 0.15 2.05 0.18 4.53 0.17 0.74 0.11 5.27
The Presentation Win10 0.29 0.35 11.48 0.23 1.83 0.34 7.07 0.31 0.56 0.19 6.51
PsychToolBox MacOS 0.39 0.44 22.27 0.12 2.15 0.41 21.52 0.53 0.09 0.43 21.43
PsychoPy Ubuntu 0.46 0.31 8.43 1.19 3.49 0.34 4.71 0.31 0.71 0.16 5.43
E - Prime Win10 0.57 0.53 9.27 0.18 2.51 0.18 4.41 0.98 5.08 0.97 0.67
PsychToolBox Win10 0.67 0.42 10.49 0.75 2.24 0.19 4.56 0.99 0.77 0.98 3.79
PsychoPy Win10 1.00 0.35 12.05 2.42 1.97 0.35 7.10 0.96 0.85 0.93 6.25
PsychoPy MacOS 2.75 0.40 22.02 11.56 1.00 0.55 18.24 0.70 0.54 0.52 17.70
Open the original MacOS 3.14 0.54 21.21 1.65 18.94 0.79 18.10 6.40 9.46 6.30 8.64
Open the original Ubuntu 3.41 0.45 9.68 9.16 32.29 0.50 2.35 3.45 2.05 3.48 0.30
Open the original Win10 4.02 1.22 8.27 1.12 17.04 0.72 3.85 8.56 47.24 8.50 43.39
Expyriment Win10 6.22 2.90 10.76 0.55 0.08 0.19 5.98 13.72 106.83 13.72 100.85
Expyriment Ubuntu 7.75 2.73 23.45 8.31 12.08 0.73 16.75 13.49 118.67 13.50 101.92
Expyriment MacOS 9.05 4.84 33.83 7.04 1.13 4.82 29.02 13.84 42.81 14.72 13.79

Want to know about the pygame have similar testing? Pygame is time and real time gap?