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Added new Python exercises
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‎Python/03-Strings/2-Price-After-Discount/README.md

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# Price After Discount Exercise
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Read the exercise's description at [Python Strings — Price After Discount Exercise](https://www.codeguage.com/courses/python/strings-price-after-discount-exercise).

‎Python/03-Strings/2-Price-After-Discount/code.py

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items = [(50, 30), (85, 10), (300, 15), (20, 5)]
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col_len = 20
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print('Price'.ljust(col_len) + 'Discount'.ljust(col_len) + 'Price after discount'.ljust(col_len))
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print()
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for item in items:
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price = item[0]
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discount = item[1]
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final_price = price - (price * discount / 100)
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price = '${:.2f}'.format(price)
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final_price = '${:.2f}'.format(final_price)
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discount = str(discount) + '%'
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print(price.ljust(col_len) + discount.ljust(col_len) + final_price.ljust(col_len))

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