تمرین 3
برنامه ای بنویسید که یک روز هفته را به طور تصافی انتخاب کند. سپس یک نام را از کاربر سوال کند. در صورتی که کاربر نام صحیح را وارد کرده بود با یک عبارت از کاربر تشکر کرده و برنامه خاتمه پیدا کند و الا برنامه با نمایش یک پیام خطا مجددا ادامه پیدا کند.
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https://www.tg-me.com/joinchat-AAAAAFGMkouqbsb86Vfzug
BY Python4Finance
Bitcoin mining is the process of adding new transactions to the Bitcoin blockchain. It’s a tough job. People who choose to mine Bitcoin use a process called proof of work, deploying computers in a race to solve mathematical puzzles that verify transactions.To entice miners to keep racing to solve the puzzles and support the overall system, the Bitcoin code rewards miners with new Bitcoins. “This is how new coins are created” and new transactions are added to the blockchain, says Okoro.
Secure video calling is in high demand. As an alternative to Zoom, many people are using end-to-end encrypted apps such as WhatsApp, FaceTime or Signal to speak to friends and family face-to-face since coronavirus lockdowns started to take place across the world. There’s another option—secure communications app Telegram just added video calling to its feature set, available on both iOS and Android. The new feature is also super secure—like Signal and WhatsApp and unlike Zoom (yet), video calls will be end-to-end encrypted.
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