Slow iteration with pandas

Question

I am using the following code to generate all chords of up to 6 elements, with 12 possible notes for each element. Then the amount of chords generated should be : (12*12*12*12*12*12) + (12*12*12*12*12) + (12*12*12*12) + (12*12*12) + (12*12) + (12) = 3.257.436 . Right ?

Well, according to my calculations, it’ll take about 30 hours to finish on my laptop. That is if the processing speed does not change with time ... I created a free virtual machine on google Clouds, and I left this code running there tbm (8 vCpus, 8gb of ram) but it’s been a few hours.

So I’m wondering if there’s a way to speed up the process. I couldn’t use the Vm with 16 vCpus. And I don’t know what I can do to improve the code.

def calculando_todos_acordes_e_diferencas():
    import pandas as pd
    import itertools                          
    anagrama=[]
    for i in range(1,13):
        anagrama.append(i)

    tst=[[[0],[0]]]
    df=pd.DataFrame(tst, columns=["notas","diferencas"])
    count_name=-1

    for qntd_notas in range(7):
        for i in itertools.product((anagrama), repeat=qntd_notas) :
            diferencas=[]
            count=-1
            for primeiro in i :
                count=count+1
        
        
                if i.index(primeiro) != len(i)-1 :
                    for segundo in i[count+1:]:
                        diferenca= segundo - primeiro
                        if diferenca < 0 :
                            diferenca=diferenca* -1
                        diferencas.append(diferenca)

          #  if len(df.index) == 100000 :
           #     count_name=count_name+1
            #    df=df.append({"notas":list(i),"diferencas":diferencas},ignore_index=True)
             #   df.to_csv("acordes e diferencas pt %s.csv" %(count_name), index=False)
              #  df=pd.DataFrame(tst, columns=["notas","diferencas"])

            df=df.append({"notas":list(i),"diferencas":diferencas},ignore_index=True)
    
    df.to_csv("acordes e diferencas TOTAL2.csv", index=False)
            #else:
            
     
calculando_todos_acordes_e_diferencas()