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Python dasturlash maktabi
Python dasturlash maktabi
Ⓜ️ Roʼyxat Ro'yxat - ma'lumotlar to'plamini saqlash uchun ishlatiladigan ma'lumot turi. To'rtburchakli qavs ichida ro'yxat yaratilganda uning barcha elementlari vergul bilan ajratilib yoziladi. ['olma', 'anor', 'gilos'] Ro'yxat massivga o'xshaydi va farqi…
Ro'yxat funksiyalari va uslublari


royxat = list() # yoki []

# ro'yxat oxiriga element qo'shadi
royxat.append('olma')
print('append', royxat)
append ['olma']

# 2 ta ro'yxatni birlashtiradi
royxat.extend(['uzum', 'qulupnay'])
print('extend', royxat)
extend ['olma', 'uzum', 'qulupnay']


# Ro'yxatning birinchi elementiga 'behi' qiymatini kiriting
royxat.insert(1, 'behi')
print('insert', royxat)
insert ['olma', 'behi', 'uzum', 'qulupnay']


# Ro'yxatdagi 'olma' qiymatiga ega bo'lgan birinchi elementni o'chiradi.
# Agar bunday element mavjud bo'lmasa ValueError xatoligini qaytaradi
royxat.remove('olma')
print('remove', royxat)
remove ['behi', 'uzum', 'qulupnay']


# i-elementni olib tashlaydi va qaytaradi. Agar indeks ko'rsatilmagan
# bo'lsa, oxirgi element o'chiriladi
royxat.pop(0)
print('pop', royxat)
pop ['uzum', 'qulupnay']


# qiymati x bo'lgan elementlar sonini qaytaradi
print('count', royxat.count('uzum'))
count 1


# Ro'yxatni teskari joylashtiradi
royxat.reverse()
print('reverse', royxat)
reverse ['qulupnay', 'uzum']


# Ro'yxatni nusxalaydi
rc = royxat.copy()
royxat.extend(rc)
print('copy', royxat)
copy ['qulupnay', 'uzum', 'qulupnay', 'uzum']


# Ro'yxatni tozalaydi
royxat.clear()
print('clear', royxat)
clear []



alfabit = ['i', 'e', 'i', 'o', 'g', 'l', 'i', 'i', 'u', 'l']

index = alfabit.index('o')
print("birinchi o harfini ro'yxatdagi o'rni: ", index)
birinchi o harfini ro'yxatdagi o'rni: 3

index = alfabit.index('i', 3)
print("Ro'yxatdagi uchinchi i harfi joylashgan o'rni: ", index)
Ro'yxatdagi uchinchi i harfi joylashgan o'rni: 6

index = alfabit.index('i', 2, 8)
print("""Ro'yxatning iikinchi elementidan sakkizinchi elementigacha birinchi i harfi joylashgan o'rni: """, index)
Ro'yxatning ikkinchi elementidan sakkizinchi elementi oralig'idagi
birinchi i harfi joylashgan o'rni: 2

# Ro'yxatni funksiyaga qarab saralash
def funksiya(n):
return n['yili']

majburiy_ixtiyoriy = [
{'GM': 'Nexia', 'yili': 2016},
{'GM': 'Spark', 'yili': 2014},
{'GM': 'Damas', 'yili': 2011},
{'GM': 'Matiz', 'yili': 2015}
]

majburiy_ixtiyoriy.sort(key=funksiya)

print(majburiy_ixtiyoriy)
[{'GM': 'Damas', 'yili': 2011}, {'GM': 'Spark', 'yili': 2014},
{'GM': 'Matiz', 'yili': 2015}, {'GM': 'Nexia', 'yili': 2016}]

Ushbu postni pythonga aloqador guruhlarga yuboring.


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@pythonuz
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Ro'yxat funksiyalari va uslublari


royxat = list() # yoki []

# ro'yxat oxiriga element qo'shadi
royxat.append('olma')
print('append', royxat)
append ['olma']

# 2 ta ro'yxatni birlashtiradi
royxat.extend(['uzum', 'qulupnay'])
print('extend', royxat)
extend ['olma', 'uzum', 'qulupnay']


# Ro'yxatning birinchi elementiga 'behi' qiymatini kiriting
royxat.insert(1, 'behi')
print('insert', royxat)
insert ['olma', 'behi', 'uzum', 'qulupnay']


# Ro'yxatdagi 'olma' qiymatiga ega bo'lgan birinchi elementni o'chiradi.
# Agar bunday element mavjud bo'lmasa ValueError xatoligini qaytaradi
royxat.remove('olma')
print('remove', royxat)
remove ['behi', 'uzum', 'qulupnay']


# i-elementni olib tashlaydi va qaytaradi. Agar indeks ko'rsatilmagan
# bo'lsa, oxirgi element o'chiriladi
royxat.pop(0)
print('pop', royxat)
pop ['uzum', 'qulupnay']


# qiymati x bo'lgan elementlar sonini qaytaradi
print('count', royxat.count('uzum'))
count 1


# Ro'yxatni teskari joylashtiradi
royxat.reverse()
print('reverse', royxat)
reverse ['qulupnay', 'uzum']


# Ro'yxatni nusxalaydi
rc = royxat.copy()
royxat.extend(rc)
print('copy', royxat)
copy ['qulupnay', 'uzum', 'qulupnay', 'uzum']


# Ro'yxatni tozalaydi
royxat.clear()
print('clear', royxat)
clear []



alfabit = ['i', 'e', 'i', 'o', 'g', 'l', 'i', 'i', 'u', 'l']

index = alfabit.index('o')
print("birinchi o harfini ro'yxatdagi o'rni: ", index)
birinchi o harfini ro'yxatdagi o'rni: 3

index = alfabit.index('i', 3)
print("Ro'yxatdagi uchinchi i harfi joylashgan o'rni: ", index)
Ro'yxatdagi uchinchi i harfi joylashgan o'rni: 6

index = alfabit.index('i', 2, 8)
print("""Ro'yxatning iikinchi elementidan sakkizinchi elementigacha birinchi i harfi joylashgan o'rni: """, index)
Ro'yxatning ikkinchi elementidan sakkizinchi elementi oralig'idagi
birinchi i harfi joylashgan o'rni: 2

# Ro'yxatni funksiyaga qarab saralash
def funksiya(n):
return n['yili']

majburiy_ixtiyoriy = [
{'GM': 'Nexia', 'yili': 2016},
{'GM': 'Spark', 'yili': 2014},
{'GM': 'Damas', 'yili': 2011},
{'GM': 'Matiz', 'yili': 2015}
]

majburiy_ixtiyoriy.sort(key=funksiya)

print(majburiy_ixtiyoriy)
[{'GM': 'Damas', 'yili': 2011}, {'GM': 'Spark', 'yili': 2014},
{'GM': 'Matiz', 'yili': 2015}, {'GM': 'Nexia', 'yili': 2016}]

Ushbu postni pythonga aloqador guruhlarga yuboring.


http://telegra.ph/file/03234945c42b61c15d5ea.jpg

@pythonuz

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Ro'yxat funksiyalari va uslublariroyxat = list() # yoki []# ro'yxat oxiriga element qo'shadiroyxat.append('olma')print('append'

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