Blank window

[emanom]

Hi, very interesting project!

I'm trying to run this on a Mac with Python 3 and all the required libraries but I only get a blank window and the following output in the console:

pygame 1.9.6
Hello from the pygame community. https://www.pygame.org/contribute.html
Start Date:  2018-08-07 00:00:00
3.7.5 (default, Nov 11 2019, 20:11:10) 
[Clang 11.0.0 (clang-1100.0.33.8)]
libpng warning: Interlace handling should be turned on when using png_read_image
>>>>>>>>>>>>>heat subwindow height:  700
Heat Map Generated
Heatmap Surface dimensions NC:  311 175
Market Generated
Smoothing Seasonal Market Conditions
serviceCoop
serviceCoop
ProdCoop
ProdCoop
Traders Generated
Generating Trade Partners
Trade Partners Generated
Start Trade
Adjust HeatMap Mode False
Adjust Import Mode True
Adjust export Mode True
ClearingMode, Month, All-Trade, Avg-Trade, NC, CC, Export, AvgNC, AvgCC, avgExport IMPORTMULT today
libpng warning: Interlace handling should be turned on when using png_read_image
True , 8 , 170991 , 2849 , 70854 , 76671 , 23466 , 1180 , 1277 , 391 , 4.0 , 244
True , 9 , 485184 , 8086 , 118352 , 221185 , 145647 , 1972 , 3686 , 2427 , 4.0 , 274
True , 10 , 512679 , 8544 , 110852 , 264107 , 137720 , 1847 , 4401 , 2295 , 4.0 , 305 
True , 11 , 715697 , 11928 , 192155 , 228546 , 294996 , 3202 , 3809 , 4916 , 4.0 , 335
...