Chirchiq davlat pedagogika universiteti matematika va informatika fakulteti matematika va informatika

ILOVA

Satrlar bilan ishlash
1.string = "hello world"
2.c0 = string[0] # h
3.print(c0)
4.c6 = string[6] # w
5.print(c6)
6.c11 = string[11] # xatolik IndexError: satr indeksi chegaradan chiqib ketdi
7.print(c11)

Satr ostilarini olish
1.string = "hello world" # 0 dan 5 gacha belgilar
2. sub_string1 = string[:5]
3. print(sub_string1) # hello # 2 dan 5 gacha belgilar
4. sub_string2 = string[2:5] print(sub_string2) # hello # 2 dan 9 gacha bitta belgi tashlab
5. sub_string3 = string[2:9:2]
6. print(sub_string3) # lowr
Ord va len funksiyalar
Ord- 1. print(ord("A")) # 65

Len- 1.string = "hello world"

2. length = len(string)
3. print(length) # 11

Satrdan izlash
1.string = "hello world"
2.exist = "hello" in string
3. print(exist) # True
4. exist = "sword" in string
5.print(exist) # False
Satrlarni ajratish
1.string = "hello world"
2. for char in string:
3.print(char)
isnumeric() metodi
1.string = input("Son kiriting: ")
2.if string.isnumeric():
3.number = int(string)
4.print(number)
Satrdan qidirish
1.welcome = "Hello world! Goodbye world!"
2.index = welcome.find("wor")
3.print(index) # 6
4.# поиск с 10-го индекса
5.index = welcome.find("wor", 10)
6.print(index) # 21
7.# поиск с 10 по 15 индекс
8.index = welcome.find("wor", 10, 15)
9.print(index) # -1


Satrlarni almashtirish
1.phone = "[phone]"
2.# defislarni bo’sh joylarga almashtirish
3.edited_phone = phone.replace("-", " ")
4.print(edited_phone) # [phone]
5.# defislarni o’chirish
6.edited_phone = phone.replace("-", "")
7.print(edited_phone) # [phone]
8.# bitta defisni o’chirish
9.edited_phone = phone.replace("-", "", 1)
10.print(edited_phone) # [phone]