我正在寻找通过用户输入创建类的实例 [英] I am looking to create instances of a class from user input

问题描述

我有这个课程：

class Bowler:

    def __init__(self, name, score):
        self.name = name
        self.score = score

    def nameScore(self):
        return '{} {}'.format(self.name, self.score)

我需要获得用户输入，直到输入空白行。然后使用获得的数据创建类的实例。我在想类似的东西：

I need to get user input until a blank line is entered. Then use the data I got to create instances of a class. I was thinking something like:

def getData():
    name, score = input("Please enter your credentails (Name score): ").split()
    B1 = Bowler(name, score)
    print(B1.nameScore())

但是后来我不得不以某种方式循环它，直到得到空白的用户输入为止。

But then I would somehow have to loop it until I get a blank user input. Also I would somehow have to create B2 B3 B4 etc in the loop.

对不起，我还是编程新手，也许我是从错误的角度来看的。

Sorry I am still really new to programming, maybe I am looking at this from the wrong angle.

推荐答案

您要查找的是 Python列表。使用这些，您可以在运行循环时跟踪新创建的项目。要创建一个列表，我们只需像这样定义它：

What you're looking for are Python Lists. With these you will be able to keep track of your newly created items while running the loop. To create a list we simply defined it like so:

our_bowlers = []

现在，我们需要更改 getData 函数以返回无或新的 Bowler ：

Now we need to alter our getData function to return either None or a new Bowler:

def getData():
    # Get the input
    our_input = input("Please enter your credentails (Name score): ").split()

    # Check if it is empty
    if our_input == '':
        return None

    # Otherwise, we split our data and create the Bowler
    name, score = our_input.split()
    return Bowler(name, score)

然后运行一个循环，检查一个新的 Bowler ，如果没有得到任何东西，我们可以打印所有的 Bowlers 我们创建了：

and then we can run a loop, check for a new Bowler and if we didn't get anything, we can print all the Bowlers we created:

# Get the first line and try create a Bowler
bowler = getData()

# We loop until we don't have a valid Bowler
while bowler is not None:

    # Add the Bowler to our list and then try get the next one
    our_bowlers.append(bowler)
    bowler = getData()

# Print out all the collected Bowlers
for b in our_bowlers:
    print(b.nameScore())

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