关于pulp.solve()的报错，pulp.apis.core.PulpSolverError: Pulp: Error while executing，末尾为cbc.exe提出的报错

  File "E:\python\建模\.venv\Lib\site-packages\pulp\apis\coin_api.py", line 112, in actualSolve
    return self.solve_CBC(lp, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "E:\python\建模\.venv\Lib\site-packages\pulp\apis\coin_api.py", line 188, in solve_CBC
    raise PulpSolverError("Pulp: Error while executing " + self.path)
pulp.apis.core.PulpSolverError: Pulp: Error while executing E:\python\建模\.venv\Lib\site-packages\pulp\solverdir\cbc\win\64\cbc.exe
 

咋一看好像是cbc解释器错误，所以可以重新安装看看是不是解释器的问题
pip install cbc

如果还不行，可以试试下述代码查看是哪个位置出了问题

pulpTestAll()

如果依旧不行，就回到源码中去，这里其实是float("inf")报错，推测原因是CBC解释器识别不了（个人推测），总之LpVariable上下限已经给出就是无穷，不必画蛇添足加这一步

import pulp as p

# pulpTestAll()
# pulp.CBC_PATH = "e:\python\建模\.venv\lib\site-packages"
LP = p.LpProblem("problem1", sense=p.LpMaximize)
x1 = p.LpVariable("x1", 0, float("inf"), cat="LpContinuous")
x2 = p.LpVariable("x2", 0, float("inf"), cat="LpContinuous")
x3 = p.LpVariable("x3", 0, float("inf"), cat="LpContinuous")
# 已找到问题，不能使用float("inf")这个正无穷，会报错， cat默认连续形

LP += 1000 * x1 + 2000 * x2 + 3000 * x3
LP += (x1 + x2 * 2 + x3 * 3 <= 10)
LP += (x2 + x3 * 2 <= 5)

LP.solve()
print("Status:", p.LpStatus[LP.status])

 因为没有blog做过这个报错，所以我给一个补充嘞