The First Programmers Were Female
codepancake.com
codepancake.com
The reason why there were no male programmers is that all the men were at war. It's hard for us modern people who look at highly specialized soldiers to understand exactly just how many men were involved in the World War II.
In fact, there were far more women in manufacturing and labor in that time frame, and we don't suddenly assume that demonstrates evidence for anything related to sex ratios in the workplace.