Hasil dari diagnosa menggunakan sistem Certainty Factor di Python tidak muncul

penyakit = ["DBD (Demam Berdarah Dengue)", "Demam Tifoid", "Campak", "Diare", "Tetanus", "Malaria", "Varisela (Cacar Air)"]
gejala = ["Demam", "Lesu", "Malas Makan", "Muntah Berak", "Pendarahan Pada Kulit", "Mimisan", "Sakit Kepala", "Tubuh Menggigil", \
          "Denyut Jantung Lemah", "Badan Lemah", "Nyeri Otot Myalgia", "Tidak Nafsu Makan", "Konstipasi", "Sakit Perut", \
          "Penyebaran Vlek Merah Muda", "Nyeri Tenggorokan", "Hidung Meler", "Batuk", "Bercak Koplik", "Nyeri Otot", "Mata Merah", \
          "Buang Air Besar Terus Menerus", "Mual", "Muntah-Muntah", "Pegal Pada Punggung", "Perut Sering Berbunyi", \
          "Kekakuan Rahang", "Nyeri Telan", "Kejang Otot", "Sakit Otot", "Nyeri Perut", "Nyeri Punggung", \
          "Tonjolan-Tonjolan Kemerahan"]
cf_pakar = [
    ["Demam", "Lesu", "Malas Makan", "Muntah Berak", "Pendarahan Pada Kulit", "Mimisan", "Sakit Kepala", \
      0.8, 0.5, 0.2, 0.7, 0.2, 0.6, 0.7],
    ["Demam", "Sakit Kepala", "Tubuh Menggigil", "Denyut Jantung Lemah", "Badan Lemah", "Nyeri Otot Myalgia", "Tidak Nafsu Makan", \
     "Konstipasi", "Sakit Perut", "Penyebaran Vlek Merah Muda", \
     0.8, 0.6, 0.7, 0.5, 0.6, 0.3, 0.4, \
     0.3, 0.4, 0.2],
    ["Demam", "Nyeri Tenggorokan", "Hidung Meler", "Batuk", "Bercak Koplik", "Nyeri Otot", "Mata Merah", \
     0.5, 0.3, 0.4, 0.2, 0.7, 0.5, 0.4],
    ["Buang Air Terus Menerus", "Mual", "Muntah-Muntah", "Pegal Pada Punggung", "Perut Sering Berbunyi", \
     0.8, 0.7, 0.7, 0.4, 0.6],
    ["Sakit Kepala", "Tubuh Menggigil", "Nyeri Tenggorokan", "Kekakuan Rahang", "Nyeri Telan", "Kejang Otot", \
     0.6, 0.6, 0.4, 0.3, 0.5, 0.7],
    ["Demam", "Lesu", "Sakit Kepala", "Tubuh Menggigil", "Tidak Nafsu Makan", "Sakit Otot", "Nyeri Perut", "Nyeri Punggung", \
     0.8, 0.8, 0.7, 0.8, 0.7, 0.6, 0.5, 0.4],
    ["Demam", "Sakit Kepala", "Mual", "Nyeri Punggung", "Tonjolan-Tonjolan Kemerahan", \
     0.6, 0.5, 0.5, 0.4, 0.8]
]
gejala_dipilih = []
for i in range(len(gejala)):
    jawaban = input("Apakah "+gejala[i]+" (Ya / Tidak) ? ")
    if jawaban.upper() == "Ya":
        gejala_dipilih.append(gejala[i])
print("Gejala Yang Dipilih : ", gejala_dipilih)
penyakit_terpilih = []
for i in range(len(cf_pakar)):
    for j in range(len(gejala_dipilih)):
        if (cf_pakar[i][1] == gejala_dipilih[j]):
            if cf_pakar[i][0] not in penyakit_terpilih:
                penyakit_terpilih.append(cf_pakar[i][0])
print("Penyakit Yang Didiagnosa Adalah : ", penyakit_terpilih)
daftar_cf = []
for i in range(len(penyakit_terpilih)):
    print("##### "+penyakit_terpilih[i]+" #####")
    jmlcf = 0
    cfke = 0
    for j in range(len(cf_pakar)):
        if (cf_pakar[j][0] == penyakit_terpilih[i]) and (cf_pakar[j][1] in gejala_dipilih):
            jmlcf = jmlcf + 1
    mblama = 0
    mdlama = 0
    for j in range(len(cf_pakar)):
        if (cf_pakar[j][0] == penyakit_terpilih[i]) and (cf_pakar[j][1] in gejala_dipilih):
            if (jmlcf == 1):
                mb = cf_pakar[j][2]
                md = cf_pakar[j][3]
                cf = mb - md
                print("MB = ", mb)
                print("MD = ", md)
                print("CF = MB - MD ==> ", mb, " - ", md, " = ", cf);
                daftar_cf.append(cf)
            elif (jmlcf > 1):
                if (cfke == 1):
                    mblama = cf_pakar[j][2]
                    mdlama = cf_pakar[j][3]
                    print("MBlama = ", mblama)
                    print("MDlama = ", mdlama)
                elif (cf_pakar == 2):
                    mbbaru = cf_pakar[j][2]
                    mdbaru = cf_pakar[j][3]
                    mbsementara = (mblama + mbbaru) * (1 - mblama)
                    mdsementara = (mdlama + mdlama) * (1 - mdlama)
                    print("MBsementara = (MBlama + MBbaru) * (1 - MBlama) ==> (", \
                          mblama, " + ", mbbaru, ") * (1 - ", mblama, ") = ", mbsementara)
                    print("MDsementara = (MDlama + MDbaru) * (1 - MDlama) ==> (", \
                          mdlama, " + ",mdbaru, ") * (1 - ", mdlama, ") = ", mdsementara)
                    if (jmlcf == 2):
                        mb = mbsementara
                        md = mdsementara
                        cf = mb - md
                        print("MB = MBsementara = ", mb)
                        print("MD = MDsementara = ", md)
                        print("CF = MB - MD ==> ", mb, " - ", md, " = ", cf)
                        daftar_cf.append(cf)
                elif (cfke >= 3):
                    mblama = mbsementara
                    mdlama = mdsementara
                    print("MBlama = MBsementara ==> ", mblama)
                    print("MDlama = MDsementara ==> ", mdlama)
                    mbbaru = cf_pakar[j][2]
                    mdbaru = cf_pakar[j][3]
                    print("MBbaru = ", mbbaru)
                    print("MDbaru = ", mdbaru)
                    mbsementara = (mblama + mbbaru) * (1 - mblama)
                    mdsementara = (mdlama + mdbaru) * (1 - mdlama)
                    print("MBsementara = (MBlama + MBbaru) * (1 - MBlama) ==> (", \
                          mblama, " + ", mbbaru, ") * (1 - ", mblama, ") = ", mbsementara)
                    print("MDsementara = (MDlama + MDbaru) * (1 - MDlama) ==> (", \
                          mdlama, " + ", mdbaru, ") * (1 - ", mdlama, ") = ", mdsementara)
                    if (jmlcf == cfke):
                        mb = mbsementara
                        md = mdsementara
                        cf = mb - md
                        print("MB = MBsementara ==> ", mb)
                        print("MD = MDsementara ==> ", md)
                        print("CF = MB - MD ==> ", mb, " - ", md, " = ", cf)
                        daftar_cf.append(cf)
print("Penyakit Hasil Diagnosa : ", penyakit_terpilih)
print(daftar_cf)
rankingpenyakit = []
cfranking = []
for i in range(len(penyakit_terpilih)):
    rankingpenyakit.append(penyakit_terpilih[i])
    cfranking.append(daftar_cf[i])
for i in range(len(penyakit_terpilih)):
    for j in range(len(penyakit_terpilih)):
        if j > i:
            if cfranking[j] > cfranking[i]:
                tmpcf = cfranking[i]
                tmppenyakit = rankingpenyakit[i]
                cfranking[i] = cfranking[j]
                rankingpenyakit[i] = rankingpenyakit[j]
                cfranking[j] = tmpcf
                rankingpenyakit[j] = tmppenyakit
print("")
print("Ranking Penyakit : ", rankingpenyakit)
print("Ranking CF : ", cfranking)