无法加载用户定义的函数

Question

我是新来与谷歌Colab工作，并有问题从另一个文件导入代码。为了简化这个过程，我安装了我的驱动器并上传了所有相关的数据和函数，但是我不能访问任何用户定义的函数。有没有更好的方法

我一直在使用python的import lib

from importlib.machinery import SourceFileLoader
def loadClassifier():
    PROJECT_PATH = "/content/gdrive/My Drive/Colab Notebooks"
    classifier = SourceFileLoader('imdbClassifier', 
    '/'.join([PROJECT_PATH,'reviews.ipynb'])).load_module()
    print(dir(classifier))
    return
loadClassifier()


the output I get is
['__builtins__', '__doc__', '__file__', '__loader__', '__name__', 
'__package__', '__spec__']
according to python documentation I was expecting
"If the object is a module object, the list contains the names of the 
module’s attributes"
but I try to 
print(classifier.preTrained()) I get 
"AttributeError: module 'imdbClassifier' has no attribute 'preTrained'"