[英]Adding Pulp Variable Value to Matrix
def square(n,m):
my_lp_problem = pulp.LpProblem("My LP Problem", pulp.LpMinimize)
x1 = pulp.LpVariable('x1', lowBound=0, cat='Integer')
x2 = pulp.LpVariable('x2', lowBound=0, cat='Integer')
x3 = pulp.LpVariable('x3', lowBound=0, cat='Integer')
x4 = pulp.LpVariable('x4', lowBound=0, cat='Integer')
x5 = pulp.LpVariable('x5', lowBound=0, cat='Integer')
x6 = pulp.LpVariable('x6', lowBound=0, cat='Integer')
x7 = pulp.LpVariable('x7', lowBound=0, cat='Integer')
x8 = pulp.LpVariable('x8', lowBound=0, cat='Integer')
# Objective function
Sum = x1+x2+x3+x4+x5+x6+x7+x8
my_lp_problem += Sum, "Z"
my_lp_problem += 1+x1-x2+x3-x4+2*x5-2*x6+2*x7-2*x8 == n
my_lp_problem += 1-(2*x1+2*x2-2*x3-2*x4+x5+x6-x7-x8) == m
my_lp_problem.solve()
pulp.LpStatus[my_lp_problem.status]
for variable in my_lp_problem.variables():
print( "{} = {}".format(variable.name, variable.varValue))
return
for n in range(1,3):
for m in range(1,3):
square(n,m)
Matrix[n-1,m-1]=x1.varValue
I keep getting 'nan' as the values in the matrix.我不断得到'nan'作为矩阵中的值。 I have tried.value, just x1 on its own.
我已经尝试过.value,只是 x1 本身。 How do I fetch the value and insert it into the matrix?
如何获取值并将其插入矩阵? Why though.
为什么。
Matrix[n-1,m-1]=x1.varValue
This line needs to be in the square(n,m)
function for x1 to be defined.这条线需要在
square(n,m)
function 中才能定义 x1。
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