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⭕️ 3-bo'lim "Nazorat tarkibi" ————————————— Ⓜ️ "if" va "elif" operatorlari Biror shart bajarish uchun if operatorlaridan foydalanishingiz mumkin va shart operatori deyarli barcha dasturlarda ishtirok etadi. Shart operatori 3 qismdan iborat (if, elif, else).…
Ⓜ️ To'plam.

To'plam - takrorlanmaydigan va tartiblanmagan ma'lumotlar saqlaydigan ma'lumot turi.

To'plamdan takrorlanmaydigan ma'lumotlarni saqlash uchun foydalaniladi.

toplam = {'pythonuz', 'pythonuz', 1, 2, 1, 1}
print(toplam)
{'pythonuz', 2, 1}


Jingalak qavs yoki set() funksiyasi yordamida to'plamni tuzish mumkin.

literal = {'pythonuz', 'phpuz', 'mqluz'}
print(literal)
{'phpuz', 'pythonuz', 'mqluz'}


Bo'sh bo'lmagan to'plamni set funksiyasi yordamida tuzish tavsiya etilmaydi.
set_funksiyasi = set([1, 2, 3, 4, 'a', 'b'])
print(set_funksiyasi)
{1, 2, 3, 4, 'b', 'a'}

Warning: Function call can be replaced with set literal

Lu'gat va to'plam jingalak qavslar ichida joylashadi. Bo'sh to'plamni lug'atdan farqlash uchun set() funksiyasi yordamida tuzish tavsiya etiladi.
none = set()
print(none)
set()


To'plamda ro'yxat, to'plam yoki lug'at kabi o'zgaruvchan elementlar bo'lishi mumkin emas.

@pythonuz



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Ⓜ️ To'plam.

To'plam - takrorlanmaydigan va tartiblanmagan ma'lumotlar saqlaydigan ma'lumot turi.

To'plamdan takrorlanmaydigan ma'lumotlarni saqlash uchun foydalaniladi.

toplam = {'pythonuz', 'pythonuz', 1, 2, 1, 1}
print(toplam)
{'pythonuz', 2, 1}


Jingalak qavs yoki set() funksiyasi yordamida to'plamni tuzish mumkin.

literal = {'pythonuz', 'phpuz', 'mqluz'}
print(literal)
{'phpuz', 'pythonuz', 'mqluz'}


Bo'sh bo'lmagan to'plamni set funksiyasi yordamida tuzish tavsiya etilmaydi.
set_funksiyasi = set([1, 2, 3, 4, 'a', 'b'])
print(set_funksiyasi)
{1, 2, 3, 4, 'b', 'a'}

Warning: Function call can be replaced with set literal

Lu'gat va to'plam jingalak qavslar ichida joylashadi. Bo'sh to'plamni lug'atdan farqlash uchun set() funksiyasi yordamida tuzish tavsiya etiladi.
none = set()
print(none)
set()


To'plamda ro'yxat, to'plam yoki lug'at kabi o'zgaruvchan elementlar bo'lishi mumkin emas.

@pythonuz

BY Python dasturlash maktabi


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How Does Bitcoin Work?

Bitcoin is built on a distributed digital record called a blockchain. As the name implies, blockchain is a linked body of data, made up of units called blocks that contain information about each and every transaction, including date and time, total value, buyer and seller, and a unique identifying code for each exchange. Entries are strung together in chronological order, creating a digital chain of blocks. “Once a block is added to the blockchain, it becomes accessible to anyone who wishes to view it, acting as a public ledger of cryptocurrency transactions,” says Stacey Harris, consultant for Pelicoin, a network of cryptocurrency ATMs. Blockchain is decentralized, which means it’s not controlled by any one organization. “It’s like a Google Doc that anyone can work on,” says Buchi Okoro, CEO and co-founder of African cryptocurrency exchange Quidax. “Nobody owns it, but anyone who has a link can contribute to it. And as different people update it, your copy also gets updated.”

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