eth-brownie - No module named <Users.someuser>

Question

Getting this error while trying to run a eth-brownie script on MacOS

ModuleNotFoundError: No module named 'Users.xyz'

Run command:

brownie run scripts/mainnet/poolUpdaterMainNet.py --network bsc-main

Would be great if someone can help.

Answer 1

I am on Python 3.9.6, but had a similar problem only using my MacOS, does not occur on my Linux machine.

Either way, I think I found a solution (at least for my version). The issue stems from the function _import_from_path in the file brownie/project/scripts.py (that should be found in your eth-brownie folder, wherever you installed it). The way it is written, it will incorrectly identify Users.username as "not a module."

My solution: replace _import_from_path with the following

def _import_from_path(path: Path) -> ModuleType:
    # Imports a module from the given path
    
    import_str = "/" + "/".join(path.parts[1:-1] + (path.stem,))+'.py'
    
    if import_str in _import_cache:
        importlib.reload(_import_cache[import_str])
    else:
        spec = importlib.util.spec_from_file_location('.'+path.stem,import_str)
        module = importlib.util.module_from_spec(spec)
        spec.loader.exec_module(module)
        _import_cache[import_str] = module
    return _import_cache[import_str]

Explanation: import_str is now modified to reflect the exact file location instead of a module name. The else: block now imports the module by specifying the file location and then loading that file as a module. I'm not sure if this will break any of the functionality in other operating systems, but I'm happy with using it as a hotfix for my Mac -- I can now run my scripts folder.