Python Gurobi导入错误：DLL加载失败

Question

I have installed Gurobi on my Windows 10 machine and I'm trying to use it in Python. Trying to import import gurobipy yields the following error:

Traceback (most recent call last):
  File "C:\Users\me\test.py", line 4, in <module>
    import gurobipy
  File "C:\Users\me\AppData\Local\Programs\Python\Python37-32\lib\site-packages\gurobipy\__init__.py", line 1, in <module>
    from .gurobipy import *
ImportError: DLL load failed: %1 is not a valid Win32 application.

Running gurobi from the command line works fine.

What does ImportError: DLL load failed: %1 is not a valid Win32 application. mean?

Answer 1

Looking at your trace I see

File "C:\Users\me\AppData\Local\Programs\Python\Python37-32\

which suggests that you are using a 32 bit build of Python 3.7. However current Gurobi distributions only ship with a gurobipy Python extension compiled for 64 bit Python versions. You need to use a 64 bit Python build to use the gurobipy extension.