Import File But Reports Error Nameerror: Name 'something' Is Not Defined

testa.py class A: s1 = 333 __age = 0 def __init__(self,age ): self.__age=age return def __del__(self): return #private def _

Solution 1:

Use a=testa.A(111)

You must name the package unless you import A explicitly e.g

from testa import A

Solution 2:

Remember this:

Doing: import mymodule does not import the whole methods and attributes of mymodule to the namespace, so you will need to refer to mymodule, everytime you need a method or attribute from it, using the . notation, example:

x = mymodule.mymethod()

However, if you use:

from mymodule import * 

This will bring every method and attribute of mymodule into the namespace and they are available directly, so you don't need to refer to mymodule each time you need to call one of its method or attribute, example:

from mymodule import *

x = mymethod()  #mymethod being a method from mymodule

You can also import specific method if you don't want to bring the whole module:

from mymodule import myMethod

For further details, read the Python docs:

https://docs.python.org/2/tutorial/modules.html