Web2 mrt. 2024 · class MyNumbers: def __iter__(self): self.a = 1 return self def __next__(self): if self.a <= 3: x = self.a self.a += 1 return x else: raise StopIteration myclass = … Web7 feb. 2024 · 1.代码如图所示 >>> class MyNumbers: def __iter__ (self): self.a = 1 return self def __next__ (self): if self.a <= 20: x = self.a self.a += 1 return x else: raise StopIteration >>> myclass = MyNumbers () >>> myiter = iter (myclass) >>> for x in myiter: print (x) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 2.出现错误：

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Web6 apr. 2024 · 4. 创建生成器 方式二（生成器函数）. 1. 生成器函数. 如果一个函数中包含了 yield 关键字，那么这个函数就不再是一个普通的函数，调用函数就是创建了一个生成器（generator）对象. 生成器函数：利用关键字 yield 一次性返回一个结果，阻塞，重新开始. 2. … Webclass MyNumbers: def __iter__( self): self. a = 1 return self def __next__( self): x = self. a self. a += 1 return x myclass = MyNumbers () myiter = iter( myclass) print(next( myiter)) print(next( myiter)) print(next( myiter)) print(next( myiter)) print(next( myiter)) Вывод: 1 2 … gunship token

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Web7 sep. 2024 · class MyNumbers: def __iter__(self) : self .a = 1 return self def __next__(self) : if self .x < 20 : x = self .a self .a += 1 return x else: raise StopIteration myclass = … WebIterator objects in python conform to the iterator protocol, which basically means they provide two methods: __iter__() and __next__(). The __iter__ returns the iterator object and is implicitly called at the start of loops.. The __next__() method returns the next value and is implicitly called at each loop increment. This method raises a StopIteration exception … Web27 mrt. 2024 · 9、python遗传算法求解VRP问题中的一类问题-TSP问题：遗传求解哈密尔顿路线。10、python实现熵值法、灰色关联系数、隶属度矩阵、效能评价模型的求解。8、NSGA2求解多目标优化问题，对比多智能 … gunship tim capello