python循环中创建新对象_Python-在具有独立处理的循环中创建对象实例

您可以将实例存储在列表中：

politicians = []

for name in 'ABC':

politicians.append(Politician(name))

现在您可以访问各个实例：

>>> politicians[0].name

'A'

我使用了类的修改版本,如果没有提供,则为每个政治家提供默认年龄：

class Politician:

def __init__(self, name, age=45):

self.name = str(name)

self.age = age

self.votes = 0

def change(self):

self.votes = self.votes + 1

def __str__(self):

return self.name + ": " + str(self.votes)

现在,您可以使用您的政治家名单：

print('The Number of politicians: {}'.format(len(politicians)))

打印：

The Number of politicians: 3

这个：

for politician in politicians:

print(politician)

打印：

A: 0

B: 0

C: 0

分配随机投票：

import random

for x in range(100):

pol = random.choice(politicians)

pol.votes += 1

现在：

for politician in politicians:

print(politician)

打印：

A: 35

B: 37

C: 28

整个计划：

# Assuming Python 3.

class Politician:

def __init__(self, name, age=45):

self.name = str(name)

self.age = age

self.votes = 0

def change(self):

self.votes = self.votes + 1

def __str__(self):

return '{}: {} votes'.format(self.name, self.votes)

num_politicians = int(input("The number of politicians: "))

politicians = []

for n in range(num_politicians):

if n == 0:

new_name = input("Please enter a name: ")

else:

new_name = input("Please enter another name: ")

politicians.append(Politician(new_name))

print('The Number of politicians: {}'.format(len(politicians)))

for politician in politicians:

print(politician)

print('Processing ...')

for x in range(100):

pol = random.choice(politicians)

pol.votes += 1

for politician in politicians:

print(politician)

用法：

The number of politicians: 3

Please enter a name: John

Please enter another name: Joseph

Please enter another name: Mary

The Number of politicians: 3

John: 0 votes

Joseph: 0 votes

Mary: 0 votes

Processing ...

John: 25 votes

Joseph: 39 votes

Mary: 36 votes

UPDATE

正如@martineau建议的那样,对于真实存在的问题,字典会更多

有用.

创建字典而不是列表：

politicians = {}

在循环中,当您添加实例时,我们将名称作为键：

politicians[new_name] = Politician(new_name)