Python 2.7.5，列表基础，正确显示列表输入

Question

刚开始使用 python 2.7.5 尝试数组。我的目标是要求用户输入并将输入存储在多个数组中。

到目前为止，就用输入存储多个数组而言，这就是我所拥有的。尝试在末尾打印输入时遇到错误。

这是我目前的代码。

# want user to enter a list of employee names, error occurs when trying to recall user entry

emp_name = [0] 
emp_name = raw_input("please enter employee name") 

while emp_name !="neg":
    emp_name = raw_input("please enter employee name,enter neg to exit")

print "employee 2 is:", emp_name[1] #I want the 2nd name entered to appear 

Answer 1

然后你会想要:

1. 更改变量的名称，使列表与输入的名称不同。
2. 将您获得的每个名称附加到列表中。

这应该是你想要的:

employees = []
name = raw_input("Please enter an employee name: ") 

while name != "neg":
    # Append the previous name.
    employees.append(name)
    # Get a new name.
    name = raw_input("Please enter an employee name or 'neg' to exit: ")

# You need a try/except here in case there is no second employee.
# This can happen if the user types in "neg" to begin with or only 1 name.
try:
    print "Employee 2 is: ", employees[1]
except IndexError:
    print None

另外，我稍微更改了您的输入提示，使它们更清晰、更人性化。

下面是一个正在运行的脚本示例:

Please enter an employee name: Bob
Please enter an employee name or 'neg' to exit: Joe
Please enter an employee name or 'neg' to exit: neg
Employee 2 is:  Joe

这是一个没有第二名员工的人:

Please enter an employee name: Joe
Please enter an employee name or 'neg' to exit: neg
Employee 2 is:  None