这是我第一次使用 Python。我试图弄清楚如何以最简单的方式舍入小数。
print("\nTip Calculator")
costMeal = float(input("Cost of Meal:"))
tipPrct = .20
print("Tip Percent: 20%")
tip = costMeal * tipPrct
print("Tip Amount: " + str(tip))
total = costMeal + tip
print("Total Amount: " + str(total))
您应该使用Python 的内置 round 函数。
round() 的语法：
round(number, number of digits)
round() 的参数：
..1) number - number to be rounded
..2) number of digits (Optional) - number of digits
up to which the given number is to be rounded.
If not provided, will round to integer.
因此，您应该尝试更像这样的代码：
print("\nTip Calculator")
costMeal = float(input("Cost of Meal: "))
tipPrct = .20
print("Tip Percent: 20%")
tip = costMeal * tipPrct
tip = round(tip, 2) ## new line
print("Tip Amount: " + str(tip))
total = costMeal + tip
print("Total Amount: " + str(total))
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我来说两句