如何在我的 python 代码中添加一个循环，从头开始？答案

【问题标题】：How do I add a loop to my python code, to start it from the beginning?如何在我的 python 代码中添加一个循环，从头开始？
【发布时间】：2015-10-23 14:40:27
【问题描述】：

如果他们选择是 (y)，我如何从头开始重新启动

print ""
print "               WAGE CALCULATOR TOOL   -    By Joel"
print""
print " Please enter details: "
name = raw_input("  Employee Name: ")
hrs = float(raw_input("  Hours Per Week: "))
rate = float(raw_input("  Hourly Rate: "))
pay = hrs * rate
print ""
print "",name,":","Wage amount: "
print " ",pay,"Per week"
week = pay * 4
print " ",week,"Every 4 weeks"
print""

done = raw_input("Restart? y/n: )

【问题讨论】：

您是否尝试过阅读有关循环的 Python 文档？
是的，我尝试了不同的方法来添加它，但它最终根本没有加载:(
将其中一种方式添加到您的帖子中。

标签： python loops restart

【解决方案1】：

建议将其包装成一个函数：

def ask():
    print " Please enter details: "
    name = raw_input("  Employee Name: ")
    hrs = float(raw_input("  Hours Per Week: "))
    rate = float(raw_input("  Hourly Rate: "))
    pay = hrs * rate
    print ""
    print "",name,":","Wage amount: "
    print " ",pay,"Per week"
    week = pay * 4
    print " ",week,"Every 4 weeks"
    print""

    return raw_input("Restart? y/n: ") == "y"

done = ask()
while not done:
    done = ask()

当然，您还应该考虑验证用户输入（例如，通过try/except 捕获float() 引发的错误）。

【讨论】：

【解决方案2】：

def ask():
    print (" Please enter details: ")
    name = input("  Employee Name: ")
    hrs = float(input("  Hours Per Week: ")
    rate = float(input("  Hourly Rate: ")
    pay = hrs * rate
    print ("")
    print (""),name,(":"),("Wage amount: ")
    print (" "),pay,("Per week")
    week = pay * 4
    print (" "),week,("Every 4 weeks")
    print("")

    return input("Restart? y/n: ") == "y"

done = ask()
while not done:
    done = ask()

我没有尝试过原始输入，但似乎效果更好

【讨论】：