Lug'atlar va to'plamlar

talaba = {
    "ism": "Husanboy",
    "yosh": 25,
    "shahar": "Namangan",
    "talabami": True,
}

print(talaba)
print(talaba["ism"])
print(len(talaba))

talaba = {"ism": "Husanboy", "yosh": 25}

print(talaba["ism"])            # to'g'ridan-to'g'ri
print(talaba.get("yosh"))       # xavfsiz usul
print(talaba.get("telefon"))    # yo'q kalit -> None
print(talaba.get("telefon", "kiritilmagan"))    # standart qiymat bilan

talaba = {"ism": "Husanboy", "yosh": 25}

talaba["shahar"] = "Namangan"      # yangi kalit qo'shish
talaba["yosh"] = 26                 # mavjudini o'zgartirish
print(talaba)

talaba.update({"telefon": "+998901234567", "kurs": 3})
print(talaba)

talaba = {"ism": "Husanboy", "yosh": 26, "kurs": 3, "telefon": "+998901234567"}

del talaba["telefon"]
print(talaba)

olingan = talaba.pop("kurs")
print(f"O'chirilgan qiymat: {olingan}")

talaba.clear()
print(talaba)

narxlar = {
    "Klaviatura": 185000,
    "Sichqoncha": 95000,
    "Monitor": 2450000,
}

# Faqat kalitlar
for mahsulot in narxlar:
    print(mahsulot)

print("---")

# Kalit va qiymat birga
for mahsulot, narx in narxlar.items():
    print(f"{mahsulot:<15}{narx:>10,} so'm")

print("---")

# Faqat qiymatlar
print("Jami:", sum(narxlar.values()), "so'm")

guruh = {
    "husanboy": {
        "toliq_ism": "Husanboy Qodirov",
        "baholar": [85, 92, 78],
        "shahar": "Namangan",
    },
    "sardor": {
        "toliq_ism": "Sardor Aliyev",
        "baholar": [70, 65, 80],
        "shahar": "Toshkent",
    },
}

print(guruh["husanboy"]["toliq_ism"])
print(guruh["sardor"]["baholar"][0])

for login, malumot in guruh.items():
    ortacha = sum(malumot["baholar"]) / len(malumot["baholar"])
    print(f"{malumot['toliq_ism']:<20}{ortacha:>6.1f}  ({malumot['shahar']})")

sonlar = [1, 2, 3, 4, 5]

kvadratlar = {son: son ** 2 for son in sonlar}
print(kvadratlar)

narxlar = {"olma": 12000, "anor": 25000, "uzum": 18000}
chegirma = {mahsulot: narx * 0.9 for mahsulot, narx in narxlar.items()}
print(chegirma)

qimmatlar = {m: n for m, n in narxlar.items() if n > 15000}
print(qimmatlar)

raqamlar = {3, 1, 4, 1, 5, 9, 2, 6, 5}
print(raqamlar)                    # takrorlar avtomatik olib tashlandi

bosh_toplam = set()                # {} emas! -- u lug'at yaratadi
print(type(bosh_toplam))

# Ro'yxatdan takrorlarni olib tashlash
shaharlar = ["Toshkent", "Buxoro", "Toshkent", "Xiva", "Buxoro"]
noyob = list(set(shaharlar))
print(noyob)

python_biladi = {"Husanboy", "Sardor", "Malika"}
java_biladi = {"Sardor", "Bekzod", "Malika"}

print("Ikkalasidan biri:", python_biladi | java_biladi)
print("Ikkalasi ham:    ", python_biladi & java_biladi)
print("Faqat Python:    ", python_biladi - java_biladi)
print("Faqat bittasi:   ", python_biladi ^ java_biladi)

kutubxonalar = {"numpy", "pandas"}

kutubxonalar.add("requests")           # bitta element qo'shish
kutubxonalar.update(["flask", "django"])   # bir nechta
print(kutubxonalar)

kutubxonalar.discard("flask")          # xato bermaydi
kutubxonalar.remove("django")          # yo'q bo'lsa KeyError
print(kutubxonalar)

print("numpy" in kutubxonalar)

# ============================================
# Matndagi so'zlar chastotasini hisoblash
# ============================================

matn = """Python o'rganish oson. Python kuchli til.
Ko'plab kompaniyalar Python ishlatadi. Python bilan hammasi mumkin."""

# Tozalash va bo'lish
sozlar = matn.lower().replace(".", "").replace(",", "").split()

# Chastotani hisoblash
chastota = {}
for soz in sozlar:
    chastota[soz] = chastota.get(soz, 0) + 1

# Kamayish tartibida saralash
saralangan = sorted(chastota.items(), key=lambda juftlik: juftlik[1], reverse=True)

print("=" * 38)
print(f"{'SO‘ZLAR CHASTOTASI':^38}")
print("=" * 38)

for soz, soni in saralangan[:6]:
    ustun = "#" * soni
    print(f"{soz:<16}{soni:>3}  {ustun}")

print("=" * 38)
print(f"Jami so'zlar:        {len(sozlar)}")
print(f"Noyob so'zlar:       {len(set(sozlar))}")
print(f"Takrorlanish darajasi: {(1 - len(set(sozlar)) / len(sozlar)):.0%}")