Yes, 'apple' is in the fruits list List uzunligi. Listda nechta element mavjudligini aniqlash uchun ushbu len()funktsiyadan foydalaning :
thislist = ["apple", "banana", "cherry"]
print(len(thislist))
3 Elementlarni qo'shish. Ro'yxat oxiriga biror narsa qo'shish uchun append() usulidan foydalaning:
thislist = ["apple", "banana", "cherry"]
thislist.append("orange")
print(thislist)
['apple', 'banana', 'cherry', 'orange'] Elementni olib tashlash. Ro'yxatdan elementlarni olib tashlashning bir necha usullari mavjud: remove() Usuli belgilangan ob'ektni tozalaydi:
thislist = ["apple", "banana", "cherry"]
thislist.remove("banana")
print(thislist)
['apple', 'cherry'] pop()Usuli belgilangan katalog, (yoki indeks ko'rsatilmagan bo'lsa oxirgi elementni) olib tashlanadi:
thislist = ["apple", "banana", "cherry"]
thislist.pop()
print(thislist)
['apple', 'banana'] delKalit so'z belgilangan katalog olib tashlanadi:
thislist = ["apple", "banana", "cherry"]
del thislist[0]
print(thislist)
['banana', 'cherry'] Izoh: delKalit so'z ham butunlay ro'yxatini o'chirishingiz mumkin:
clear()Usuli ro'yxatini bo'shatmoqda:
thislist = ["apple", "banana", "cherry"]
thislist.clear()
print(thislist)
[] List ni nusxalash. Siz oddiygina yozib ro'yxatini nusxa olmaydi list2 = list1: chunki, list2faqat bir o'ladi yozuvlar uchun list1, va qilingan o'zgarishlar list1avtomatik ravishda ham amalga oshiriladi list2. Nusxalashning usullari mavjud, bittasi - o'rnatilgan ro'yxat usulidan foydalanish copy().
thislist = ["apple", "banana", "cherry"]
mylist = thislist.copy()
print(mylist)
