import os

f1 = "./fdaapp_new"
f1_bak = "./fdaapp_new_bak"

f2 = "./TCMML_pdbqt"
f2_bak = "./TCMML_pdbqt_bak"

f3 = "./exp_pdbqt7kb_filter"
f3_bak = "./exp_pdbqt7kb_filter_bak"

f1_files = os.listdir(f1)[:8]
f2_files = os.listdir(f2)[:8]
f3_files = os.listdir(f3)[:8]

print(f1,f1_files)
print(f2,f2_files)
print(f3,f3_files)

os.makedirs(f1_bak)
os.makedirs(f2_bak)
os.makedirs(f3_bak)

os.system("mv "+f1+"/* "+f1_bak+"/")
os.system("mv "+f2+"/* "+f2_bak+"/")
os.system("mv "+f3+"/* "+f3_bak+"/")

for f in f1_files:
    f_url = f1_bak + "/" + f
    os.system("cp "+f_url+" "+f1+"/")

for f in f2_files:
    f_url = f2_bak + "/" + f
    os.system("cp "+f_url+" "+f2+"/")

for f in f3_files:
    f_url = f3_bak + "/" + f
    os.system("cp "+f_url+" "+f3+"/")