jimgardener wrote:
I am new to python,and am learning from the tutorials
i created 2 .py files like below and put the main in one of them
empmodule.py
----------
from workmodule import Worker
class Employer:
def __init__(self,n):
self.name=n
self.worker=Worker()
def getemployerName(self):
return self.name
def callWorker(self,message):
self.worker.answerCall(message)
if __name__ == "__main__":
emp=Employer()
emp.callWorker("report to work")
workmodule.py
------------------
from empmodule import Employer
class Worker:
def __init__(self):
self.emp=Employer()
def answerCall(self,msg):
print "Worker :"+msg+" received
from :"+self.emp.getemployerName()
is this kind of mutual import not allowed in python?
I am getting
"from workmodule import Worker
ImportError: cannot import name Worker"
any advice/pointers most welcome
thanks
You are doing a circular import. Here is some things you can do:
#1. import the module names, not definitions inside them. For example:
import empmodule
....
self.emp = empmodule.Employer()
#2. place both classes in the same file
By the way, your program must semantically be wrong. When you create an
Employer instance from your main program, it will try to create a worker
in its constuctor:
self.worker = workmodule.Worker()
When the worker is being created, it tries to create an employer in its
constuctor:
self.emp = empmodule.Employer()
These constructors will be calling each other forever. This will be an
infinite recursion. In the end, no constructor call will be finished and
you will not create any objects but reach recursion limit instead.
Best,
Laszlo
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