The first is that importing a module executes Python code which may take time, memory, or have side effects. So you might want to import a.b.c.d ... ... <看更多>

The path from which the module should be imported. Value. An R object wrapping a Python module. Module attributes can be accessed via the $ operator, ... ... <看更多>

Whether you import a module or import a function from a module, Python will parse the whole module. Either way the module is imported. " ... ... <看更多>