Does the child class not recognize the import of modules of the parent class?

Question

I have two classes in two different modules:

• animal.py
• monkey.py

animal.py:

 import json class Animal(object): pass 

a monkey:

 import animal class Monkey(animal.Animal): def __init__(self): super(Monkey, self).__init__() # Do some json stuff... 

When I try to instantiate a Monkey , I get

 NameError: global name 'json' is not defined 

But I import json into the superclass definition module, so why not load it?

Answer 1

It loads, but its name is not available in monkey.py .

You can type animal.json to get it (but why do you need it), or just type

 import json 

at monkey.py . Python ensures that the module does not load twice.

Answer 2

Well, importing python doesn't work as a C # include pre-processor directive. They only import the module into the namespace of the import module, and not into the global namespace. So, you have to import json into every module that you are going to use.