Get variable value defined in another python code

Question

In order to create a code, I have decided to create a python class to just define some variables with default value. you can see this as "struct" in C.

the file is name : ScreenStructure.py

Inside I have defined this code

class ViewIdleScreen():
    def _init_(self):
        self.menu_access = "id/no_id/21"
        self.Call_app = "id/no_id/23"
        self.Email_app = "idno_id/24"
        self.Camera_app = "id/no_id/27"
        self.Browser_app = "id/no_id/26"
        self.Contacts_app = "id/no_id/9"
        self.Calendar_app = "id/no_id/10"
        self.Messaging_app = "id/no_id/11"
        self.Notes_app = "id/no_id/12"

    def Call_app(self):
        return self.Call_app

In the main file, I have added :

from ScreenStructure import ViewIdleScreen

later in the code of the main file:

IdleScreenView = ViewIdleScreen()
print IdleScreenView.Call_app()

but instead of displaying "id/no_id/23" it display

<bound method ViewIdleScreen.Call_app of <ScreenStructure.ViewIdleScreen instance at 0x02A16990>>

You've named the function and the attribute the same thing. You've also left out the double underscores around the init method, which means that's just a private method and not an initializer. Lastly, by convention, method names are lowercase in Python. — Two-Bit Alchemist
– Two-Bit Alchemist, Commented Apr 2, 2014 at 21:50

mhlester · Accepted Answer · 2014-04-02 21:52:42Z

3

First, you're naming __init__ _init_. This is wrong. You need two underscores.

Second, you're setting an attribute Call_app there, but that's the same name as the method you define later:

def Call_app(self):
    return self.Call_app

In addition to being shadowed by the attribute (if __init__ were declared properly), this method returns the method itself, which is the bound method you're seeing.

Avoid the collision of attribute and method names, and name __init__ correctly

answered Apr 2, 2014 at 21:52

mhlester

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1 Comment

Joran Beasley Over a year ago

ahh +1 better reading than me :P I thought it was strange that the method would shadow the member

Joran Beasley · Accepted Answer · 2014-04-02 21:51:05Z

0

you should not make functions named the same as data members

hello = "hello world"
def hello():
     print "goodbye!"

print hello

often times people will make a variable name preceded by an underscore or something

class X:
    def __init__(self,*args):
         self._x = "yellow"
    def x(self):
       return self._x

but as @mhlester points out a main problem is that you named __init__ incorrectly

answered Apr 2, 2014 at 21:51

Joran Beasley

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