关于我的问题:
每次前端向后端发送消息时,我都会多次创建类的实例。(这也无法更改)。
现在实例必须满足以下条件:
你知道我如何实现这一点吗?
到目前为止,我的课堂上有这个:
class ScheduleOptimizeNew:
data = {
"Station": {
}}
def __init__(self, cfgpath):
self.cfg = cfgpath
这里它是在我的 app.py 中创建的:
scheduleroptimizernew= ScheduleOptimizeNew(CFGPath)
非常感谢!
这里有一些代码,以便您可以了解类变量与实例变量:
class ScheduleOptimizeNew:
data = "Shared between instances"
def __init__(self):
pass
instance1 = ScheduleOptimizeNew()
instance2 = ScheduleOptimizeNew()
instance3 = ScheduleOptimizeNew()
print("\n------------------")
print("Original")
print(instance1.data)
print(instance2.data)
print(instance3.data)
print("------------------")
instance2.data = "Modified value"
print("\n------------------")
print("Modified through instance")
print(instance1.data)
print(instance2.data)
print(instance3.data)
print("------------------")
ScheduleOptimizeNew.data = "Modified value"
print("\n------------------")
print("Modified through class")
print(instance1.data)
print(instance2.data)
print(instance3.data)
print("------------------")
class ScheduleOptimizeNew:
def __init__(self):
self.data = "Specific to each instance"
pass
instance1 = ScheduleOptimizeNew()
instance2 = ScheduleOptimizeNew()
instance3 = ScheduleOptimizeNew()
print("\n------------------")
print("Original")
print(instance1.data)
print(instance2.data)
print(instance3.data)
print("------------------")
instance2.data = "Modified value"
print("\n------------------")
print("Modified through instance")
print(instance1.data)
print(instance2.data)
print(instance3.data)
print("------------------")
ScheduleOptimizeNew.data = "Modified value"
print("\n------------------")
print("Modified through class")
print(instance1.data)
print(instance2.data)
print(instance3.data)
print("------------------")