python协程初步---一个迭代器的实现

from collections import Iterable
from collections import Iterator

class classiterable(object):
    def __iter__(self):
        pass
    def __next__(self):
        pass


class mycoach(object):
    def __init__(self):
        pass
    def addname(self):
        pass
    def __iter__(self):
        return classiterable()
cpc = mycoach()

print("类对象可以被迭代" if isinstance(cpc,Iterable) else "无法被迭代")

类对象可以被迭代

from collections import Iterable
from collections import Iterator

class classiterable(object):
    def __init__(self,obj):
        self.obj = obj
        self.count = 0 #添加一个计数器，确保按顺序遍历数组

    def __iter__(self):
        pass
    def __next__(self):
        #防止迭代过头
        if self.count<len(self.obj.coachname):
            ret = self.obj.coachname[self.count]
            self.count+=1
            return ret
        else:
            raise StopIteration

class mycoach(object):
    def __init__(self):
        self.coachname=[]
    def addname(self,name):
        self.coachname.append(name)
    def __iter__(self):
        return classiterable(self)
cpc = mycoach()
cpc.addname(‘陈培昌‘)
cpc.addname(‘程劲‘)
cpc.addname(‘徐晓冬‘)
for i in cpc:
    print(i)
print("类对象可以被迭代" if isinstance(cpc,Iterable) else "无法被迭代")

陈培昌
程劲
徐晓冬
类对象可以被迭代

class mycoach(object):
    def __init__(self):
        self.coachname=[]
        self.count=0
    def addname(self,name):
        self.coachname.append(name)
    def __iter__(self):
        return self
    def __next__(self):
        if self.count<len(self.coachname):
            ret = self.coachname[self.count]
            self.count+=1
            return ret
        else:
            raise StopIteration


cpc = mycoach()
cpc.addname(‘陈培昌‘)
cpc.addname(‘程劲‘)
cpc.addname(‘徐晓冬‘)
for i in cpc:
    print(i)
print("类对象可以被迭代" if isinstance(cpc,Iterable) else "无法被迭代")

陈培昌
程劲
徐晓冬
类对象可以被迭代