我想使用Python解决线性规划问题。模型如下:
Maximizing x1 + x2
S.t:
x1 + x2 <=1
0<= x1 , x2 <=1
所以我尝试了这个:
from gekko import GEKKO
model = GEKKO(remote=False)
x1 = model.Var(0.2 , lb=0 , ub=1)
x2 = model.Var(0.2 , lb=0 , ub=1)
model.Equation = (sum(x1 , x2) <=1)
model.Maximize(sum(x1 , x2))
但我收到的是:
---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
~\AppData\Local\Temp/ipykernel_8024/1372822120.py in <module>
6 x2 = model.Var(0.2 , lb=0 , ub=1)
7
----> 8 model.Equation = (sum(x1 , x2) <=1)
9
10 model.Maximize(sum(x1 , x2))
~\Anaconda3\envs\Python3.10\lib\site-packages\gekko\gk_variable.py in __getitem__(self, key)
78 return len(self.value)
79 def __getitem__(self,key):
---> 80 return self.value[key]
81 def __setitem__(self,key,value):
82 self.value[key] = value
~\Anaconda3\envs\Python3.10\lib\site-packages\gekko\gk_operators.py in __getitem__(self, key)
145
146 def __getitem__(self,key):
--> 147 return self.value[key]
148
149 def __setattr__(self, name, value):
TypeError: 'float' object is not subscriptable
sum(x1, x2)
简单地改为x1 + x2
。 - Shayansum()
接受一个可迭代对象和一个起始参数。 - Tomerikoo