Python/Kivy : Call function from one class to another class and show widget in Python

Question

I am using Python-2.7 and Kivy. When I run test.py then a show button shows. When I click on the show button then a label and value shows. I am fetching it from

Answer 1

You are creating a new Invoice instance instead of using the existing one.

 Invoice().abc()

try instead:

class EditPopup(Popup):
    mode = StringProperty("")
    label_rec_id = StringProperty("Id")
    col_data = ListProperty(["?", "?", "?"])
    index = NumericProperty(0)

    def __init__(self, obj, **kwargs):
        super(EditPopup, self).__init__(**kwargs)
        self.obj = obj # will need it later...

    def update(self,obj):
        #cur.execute("UPDATE `item` SET itemName=?, itemCode=? WHERE itemId=?",
                #('Item1', 9999, 11))
        #con.commit()

        self.obj.abc()  # was Invoice().abc()