Python Module and Class - AttributeError: module has no attribute

Question

I'm new to python and I'm trying to create a module and class.

If I try to import mystuff and then use cfcpiano = mystuff.Piano(), I get an error:

AttributeError: module 'mystuff' has no attribute 'Piano'

If I try from mystuff import Piano I get:

ImportError: cannot import name 'Piano'

Can someone explain what is going on? How do I use a module and class in Python

mystuff.py

def printhello():
    print ("hello")

def timesfour(input):
    print (input * 4)


class Piano:
    def __init__(self):
        self.type = raw_input("What type of piano? ")

    def printdetails(self):
        print (self.type, "piano, " + self.age)

Test.py

import mystuff 
from mystuff import Piano 
cfcpiano = mystuff.Piano()
cfcpiano.printdetails()

Do you have an __init__.py file inside mystuff directory? — Andrey Shipilov
– Andrey Shipilov, Commented Apr 4, 2017 at 6:42
Test.py and mystuff.py has to be in the same folder, for your code to work as is. — Satish Prakash Garg
– Satish Prakash Garg, Commented Apr 4, 2017 at 6:48
its a long shot .. But delete all the .pyc files from your folder — Abhimanyu singh
– Abhimanyu singh, Commented Apr 4, 2017 at 6:53
I dont have an init file, Im using Anaconda, created a project and then added a module. — Earl
– Earl, Commented Apr 4, 2017 at 11:39

Kajal · Accepted Answer · 2022-05-11 15:26:42Z

1

If you want to create a python module named mystuff

Create a folder with name mystuff
Create an __init__.py file

#__init__.py

from mystuff import Piano #import the class from file mystuff
from mystuff import timesfour,printhello #Import the methods

Copy your class mystuff.py to the folder mystuff
Create file test.py outside the folder(module) mystuff.

#test.py
from mystuff import Piano
cfcpiano = Piano()
cfcpiano.printdetails()

edited May 11, 2022 at 15:26

user17242583

answered Apr 4, 2017 at 7:51

Kajal

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2 Comments

Stop harming Monica Over a year ago

mystuff.py is not a class but a moule. What you described (the folder with __init__.py inside) is not a module but a package. You don't need that to create a python module.

Earl Over a year ago

Thanks, I tried the folder but it just couldn't find the module. I put all the code pages without Init page under one project and it seems to work. Two questions, how does the init page get fired? It seems to cache self data code - eg. If I alter the question to What is the age of the piano? this does not come up , how does one reset this? Thanks for the help guys.

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