def register_cbc_executable(
path=r'C:\Users\Benjamin\PycharmProjects\DispatchModels\dispatch\solver'
):
"""
:param path:
:return:
"""
# todo: add cbc executable path to Django settings
path_cbc = path
os.environ['PATH'] += os.pathsep + path_cbc
register_executable(name='cbc')
return None
def __init__(self, **kwds):
try:
GLPKSHELL_old.__init__(self, **kwds)
except ApplicationError: #pragma:nocover
pass #pragma:nocover
MockMIP.__init__(self, "glpk")
def available(self, exception_flag=True):
return GLPKSHELL_old.available(self, exception_flag)
def create_command_line(self, executable, problem_files):
command = GLPKSHELL_old.create_command_line(self, executable,
problem_files)
MockMIP.create_command_line(self, executable, problem_files)
return command
def executable(self):
return MockMIP.executable(self)
def _execute_command(self, cmd):
return MockMIP._execute_command(self, cmd)
def _convert_problem(self, args, pformat, valid_pformats):
if pformat in [ProblemFormat.mps, ProblemFormat.cpxlp]:
return (args, pformat, None)
else:
return (args, ProblemFormat.cpxlp, None)
register_executable(name='glpsol')
def __init__(self, **kwds):
try:
GLPKSHELL_old.__init__(self, **kwds)
except ApplicationError: #pragma:nocover
pass #pragma:nocover
MockMIP.__init__(self,"glpk")
def available(self, exception_flag=True):
return GLPKSHELL_old.available(self,exception_flag)
def create_command_line(self,executable,problem_files):
command = GLPKSHELL_old.create_command_line(self,executable,problem_files)
MockMIP.create_command_line(self,executable,problem_files)
return command
def executable(self):
return MockMIP.executable(self)
def _execute_command(self,cmd):
return MockMIP._execute_command(self,cmd)
def _convert_problem(self,args,pformat,valid_pformats):
if pformat in [ProblemFormat.mps,ProblemFormat.cpxlp]:
return (args,pformat,None)
else:
return (args,ProblemFormat.cpxlp,None)
register_executable( name='glpsol')
return obj
## Display of the output ##
# Display x.l, x.m ;
def pyomo_postprocess(options=None, instance=None, results=None):
model.x.display()
import os
from pyutilib.services import register_executable
print(type(os.environ['PATH']))
path_cbc = r'C:\Users\Benjamin\PycharmProjects\DispatchModels\dispatch\solver'
os.environ['PATH'] += os.pathsep + path_cbc
register_executable(name='cbc')
# This is an optional code path that allows the script to be run outside of
# pyomo command-line. For example: python transport.py
if __name__ == '__main__':
# This emulates what the pyomo command-line tools does
from pyomo.opt import SolverFactory
import pyomo.environ
opt = SolverFactory("cbc")
results = opt.solve(model)
#sends results to stdout
results.write()
print("\nDisplaying Solution\n" + '-' * 60)
pyomo_postprocess(None, model, results)