Python

Question

我正在努力寻找天数部分的算法。不过，我能够减少年月。这是我的代码

def main():

    # Prompt the user for an integer that represents a total number of days 
    user_days = int(input("Enter a total number of days: "))

    # constant variables for: years, months, days

    DAYS_IN_YEAR = 365
    DAYS_IN_MONTH = 30

    # Calculate the user's days into equivalent years
    years = (int(user_days // DAYS_IN_YEAR))

    # Calculate the user's days into equivalent months
    months = (int(user_days // DAYS_IN_MONTH))

    # Calculate the user's days into equivalent days
    # days = (int( user_days - DAYS_IN_MONTH ))
    # days = (int( ))

    # give user their results
    print(user_days, "days are equivalent to: ")

    # display the equivalent years
    print("Years: ", years)

    # display the equivalent months
    print("Months: ", months)

    # display the equivalent days
    print("Days: ", days)



main()

Answer 1

首先你用你的 days 做 floor div 到 365，给你年。然后我们需要剩余的天数，所以我们使用天数 modulus 365 得到剩余的天数，我们用这些天数做 floor div 到 30，得到我们的月份。然后我们用那些原来的剩余天数和 modulus 30 得到剩余的天数

days = int(input())
years = days // 365
years_r = days % 365
months = years_r // 30
days_r = years_r % 30

400
Years: 1, Months: 1, Days: 5
500
Years: 1, Months: 4, Days: 15

Answer 2

这是 divmod() 的一个很好的用法，它进行整数除法并给出商和余数：

user_days = 762

DAYS_IN_YEAR = 365
DAYS_IN_MONTH = 30

# Calculate number of years and remainder
years, rem = divmod(user_days, DAYS_IN_YEAR)

# Calculate number of months and remainder
months, days = divmod(rem, DAYS_IN_MONTH)

# Display results
print(user_days, "days are equivalent to: ")
print("Years: ", years)
print("Months: ", months)
print("Days: ", days)

# output:
# 762 days are equivalent to: 
# Years:  2
# Months:  1
# Days:  2

Answer 3

如果没有开始日期，您将无法真正做到这一点，因为月份会有所不同（尤其是在闰年）。我建议将日期数学留给标准库。得到一个datetime.datetime作为你的开始日期，用你的"days"值构造一个datetime.timedelta，将两者相加得到一个结束日期，然后比较日期的年月日开始和结束日期。

Python - 输入用户输入的天数，然后显示等效的年月日

Python - Putting in user input of days and then displaying equivalent years, months and days

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