Question

我设法让这个函数遍历列表。我想要的是一种在输出字符串中包含当前列表元素的方法。即。显示星期一或星期二的(raw_input("Enter the number of hours the employee worked on : "))或函数所在的元素。

# -*- coding: utf-8 -*-

day = ["Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"]

def hours():
    while True:
        try:
            hours = int(raw_input("Enter the number of hours the employee worked on : "))
            if (hours >=0) and (hours <=24):
                return hours
            else:
                print ("Please enter a whole number that is more than zero & less than 24")
        except ValueError:
            print ("Please enter a whole number that is more than zero & less than 24")
            continue


for i in day:
    print hours()

Answer 1

如果您想在输出中使用工作日，可以使用format()函数，如下所示：

"Enter ... worked on {0} : ".format(day)

并将day传递到您的hours()函数：

print hours(i)

当然，您必须定义您的函数以接受一个新参数：

def hours(day):
    ...

所以你的功能有点清理，如下所示。请注意，工作日列表具有convention for constants的大写名称，并且range check已简化。此外，通常，如果您必须多次键入相同的代码行，则可能需要重新考虑代码的结构：

def hours(day):
    while True:
        try:
            prompt = "Enter the number of hours the employee worked on {0}: ".format(day)
            hours = int(raw_input(prompt))
            if 0 <= hours <= 24:
                return hours
        except ValueError:
            pass # Silently catch failure.
        print "Please enter a whole number that is more than zero & less than 24"

WEEKDAYS = ["Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"]
for day in WEEKDAYS:
    print hours(day)

Answer 2

如果您正在使用python 3.只需将其设为hours = int(input("Enter the number of hours the employee worked on: "))

即可

如何在此函数中引用列表元素？

2 个答案: