Decision Optimization

I'm using IBM(R) ILOG(R) CPLEX(R) Interactive Optimizer 22.1.2.0 (Academic Initiative) on Ubuntu 22.04.5 LTS with Python 3.10.12. The following is my Python code. 

'''

import cplex
from cplex import Cplex
from docplex.mp.model import Model
import os, fileinput

milp_model = docplex.Cplex()
objective = 1.0
index = 0

while objective == 1.0:
    
    milp_model.read("model.lp")

    milp_model.solve()
    objective = milp_model.solution.get_objective_value()

    print("OBJECTIVE " + str(index) + ": " + str(objective) + "\n")

    #print("VARIABLES: " + str(milp_model.solution.get_values()) + "\n")

    if objective == 1.0:
    
        for i in range(1,6):

            variable_value = milp_model.solution.get_values("x" + str(i))

            print("x" + str(i) + ": " + str(variable_value) + "\n")

            if variable_value == 1.0:

                for line in fileinput.FileInput("model.lp", inplace=True):

                    if "Binary" in line:
                        print("x" + str(i) + " = 0")
                        
                    print(line, end = "")

'''

This code works in Community version, but not in Academic Initiative. It throws error message: 

Traceback (most recent call last):
  File "/home/insfornet/MILP/Cube_Permutation_3/main.py", line 1, in <module>
    import cplex
ModuleNotFoundError: No module named 'cplex'

Please help. Thank you. 

Hi

have you done ?

pip install cplexpip install docplex

I'm using IBM(R) ILOG(R) CPLEX(R) Interactive Optimizer 22.1.2.0 (Academic Initiative) on Ubuntu 22.04.5 LTS with Python 3.10.12. The following is my Python code. 

'''

import cplex
from cplex import Cplex
from docplex.mp.model import Model
import os, fileinput

milp_model = docplex.Cplex()
objective = 1.0
index = 0

while objective == 1.0:
    
    milp_model.read("model.lp")

    milp_model.solve()
    objective = milp_model.solution.get_objective_value()

    print("OBJECTIVE " + str(index) + ": " + str(objective) + "\n")

    #print("VARIABLES: " + str(milp_model.solution.get_values()) + "\n")

    if objective == 1.0:
    
        for i in range(1,6):

            variable_value = milp_model.solution.get_values("x" + str(i))

            print("x" + str(i) + ": " + str(variable_value) + "\n")

            if variable_value == 1.0:

                for line in fileinput.FileInput("model.lp", inplace=True):

                    if "Binary" in line:
                        print("x" + str(i) + " = 0")
                        
                    print(line, end = "")

'''

This code works in Community version, but not in Academic Initiative. It throws error message: 

Traceback (most recent call last):
  File "/home/insfornet/MILP/Cube_Permutation_3/main.py", line 1, in <module>
    import cplex
ModuleNotFoundError: No module named 'cplex'

Please help. Thank you. 

I have tried "pip install cplex", but it installed CPlex Community Edition. But what I want is IBM CPLEX Academic Initiative, not Community edition. The community edition does not run my script due to its large size. 

------------------------------
Kok-An Pang

Original Message:
Sent: Mon March 31, 2025 09:51 AM
From: ALEX FLEISCHER
Subject: I couldn't run CPLEX in my Python.

Hi

have you done ?

pip install cplexpip install docplex

------------------------------
[Alex] [Fleischer]
[Data and AI Technical Sales]
[IBM]

Original Message:
Sent: Tue February 11, 2025 07:17 AM
From: Kok-An Pang
Subject: I couldn't run CPLEX in my Python.

I'm using IBM(R) ILOG(R) CPLEX(R) Interactive Optimizer 22.1.2.0 (Academic Initiative) on Ubuntu 22.04.5 LTS with Python 3.10.12. The following is my Python code. 

'''

import cplex
from cplex import Cplex
from docplex.mp.model import Model
import os, fileinput

milp_model = docplex.Cplex()
objective = 1.0
index = 0

while objective == 1.0:
    
    milp_model.read("model.lp")

    milp_model.solve()
    objective = milp_model.solution.get_objective_value()

    print("OBJECTIVE " + str(index) + ": " + str(objective) + "\n")

    #print("VARIABLES: " + str(milp_model.solution.get_values()) + "\n")

    if objective == 1.0:
    
        for i in range(1,6):

            variable_value = milp_model.solution.get_values("x" + str(i))

            print("x" + str(i) + ": " + str(variable_value) + "\n")

            if variable_value == 1.0:

                for line in fileinput.FileInput("model.lp", inplace=True):

                    if "Binary" in line:
                        print("x" + str(i) + " = 0")
                        
                    print(line, end = "")

'''

This code works in Community version, but not in Academic Initiative. It throws error message: 

Traceback (most recent call last):
  File "/home/insfornet/MILP/Cube_Permutation_3/main.py", line 1, in <module>
    import cplex
ModuleNotFoundError: No module named 'cplex'

Please help. Thank you. 

------------------------------
Kok-An Pang
------------------------------