我想将所有整数限制的变量附加到我定义的integer_constraints_list中。有没有一种方法可以获取带有我所有变量名的某种列表或数组,以迭代使用for循环编写的代码?类似于variables_list = [inst.x[i], inst.y[i], inst.z[i]]
。
我知道pyomo内核有点类似,但是我用environ定义了模型
model.I = RangeSet(1,20)
model.x = Var(model.I, domain=NonNegativeIntegers)
model.y = Var(model.I, domain=NonPositiveIntegers)
model.z = Var(model.I, domain=NonPositiveIntegers)
inst = model.create_instance(data)
integer_constraints_list = []
for i in inst.I:
if "nonnegativeintegers" in str(inst.x[i].domain).lower():
integer_constraints_list.append(inst.x[i])
inst.x[i].domain = NonNegativeReals
类似
variables_list = [inst.x[i], inst.y[i], inst.z[i]]
for v in variables_list:
for i in inst.I:
if "nonnegativeintegers" in str(v.domain).lower():
integer_constraints_list.append(v[i])
v.domain = NonNegativeReals
我建议进行域相等性比较,而不是对字符串表示形式进行比较:
integer_vars = [v for v in inst.component_data_objects(Var) if v.domain == NonNegativeIntegers]
integer_constraints_list.extend(integer_vars)
for v in integer_vars:
v.domain = NonNegativeReals
您可以执行以下操作:
variables_list = ['inst.x', 'inst.y', 'inst.z']
for v in variables_list:
for i in inst.I:
if "nonnegativeintegers" in str(vars()[v][i].domain).lower():
integer_constraints_list.append(v[i])
vars()[v][i].domain = NonNegativeReals
欢迎,解决方案并不像我想的那么复杂
variables_list = [inst.x, inst.y, inst.z]
for v in variables_list:
for i in inst.I:
if "nonnegativeintegers" in str(v[i].domain).lower():
integer_constraints_list.append(v[i])
v[i].domain = NonNegativeReals