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Apr 8th, 2020
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Python 0.27 KB | None | 0 0
  1. list = []
  2. elem = True
  3. while elem != "":
  4.   elem = input('Введите элемент или enter чтобы закончить: ')
  5.   if elem != "" and list.count(elem) == 0:
  6.     list.append(elem)
  7.   else:
  8.     print('Такой элемент уже есть!')
  9. print(list)
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