请参阅示例代码:
a = [1,2,3,4,5] # main list
b = [4,5,6] #variable list nr1
c = [1,2] #variable list nr2
class union(object):
def __init__(self, name):
self.name = name
def common_numbers(self, variable_list):
self.variable_list = variable_list
for x in self.name:
if x in self.variable_list:
yield(x)
def odd_numbers(self, odds):
self.odds = odds
for x in self.variable_list:
if not x % 2 == 0:
yield x
''' I receive: builtins.AttributeError: 'union' object has no attribute 'variable_list'.'''
x = union(a)
print(list(x.odd_numbers(c)))
我试图了解如何在同一个类中调用其他函数。如您所见,我试图从common_numbers函数中找到奇数。
请理解这是样本工作。我知道有很多解决方案,有或没有使用类来获得propriet结果。但是在这种情况下,我不需要结果,如果你能帮助我理解课堂上的其他功能,我真的很乐意。对不起我的英文,并提前谢谢。
答案 0 :(得分:4)
您收到错误是因为您从未真正定义过self.variable_list。它只在你调用common_numbers()时定义,但你永远不会这样做。您可以在启动时定义它:
class union(object):
def __init__(self, name, variable_list):
self.name = name
self.variable_list = variable_list
def common_numbers(self):
for x in self.name:
if x in self.variable_list:
yield(x)
x = union(a, b)
print list(x.odd_numbers(c))
或在启动之后,但在调用odd_numbers之前:
class union(object):
def __init__(self, name):
self.name = name
def common_numbers(self):
for x in self.name:
if x in self.variable_list:
yield(x)
x = union(a)
x.variable_list = b
print list(x.odd_numbers(c))