I solved this problem. I had two Python installations in my computer. One is individual installation that I did, and the other is Anaconda installation. Individual installation was 32-bit. What I did is to define ENV[“PYTHON”] to Anaconda installation, which is 64-bit. Then, I run Pkg.build(“PyCall”), and restated Julia. This solved the problem.
However, now when I run “using PyPlot”, it says that matplotlib does not match with Python installation. I do not have the Windows computer now. I will upload the error when I have that.