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(Python Beginner) Need a start on classes


(Python Beginner) Need a start on classes

By : Victor S btk467
Date : November 22 2020, 03:01 PM
like below fixes the issue I'm starting to use classes to create a simple contacts output, and then an updated version like this: , First, it need's to initialize so put a __init__ function.
code :
class Contact:
    def __init__(self, first_name, last_name, phone_number): # Arguments. self is always needed.
        self.first_name = first_name
        self.last_name = last_name
        self.phone_number = phone_number
class Contact:
    def __init__(self, first_name, last_name, phone_number): # Arguments. self is always needed.
        self.first_name = first_name
        self.last_name = last_name
        self.phone_number = phone_number

    def __str__(self):
        return "%s %s \t %s" % (self.first_name, self.last_name, self.phone_number)
class Contact:
    def __init__(self, first_name, last_name, phone_number): # Arguments. self is always needed.
        self.first_name = first_name
        self.last_name = last_name
        self.phone_number = phone_number

    def __str__(self):
        return "%s %s \t %s" % (self.first_name, self.last_name, self.phone_number)

    def set_first_name(self, first_name):
        self.first_name = first_name
class Contact:
    def __init__(self, first_name, last_name, phone_number): # Arguments. self is always needed.
        self.first_name = first_name
        self.last_name = last_name
        self.phone_number = phone_number
        self.title = None

    def __str__(self):
        if self.title is None:
            return "%s %s \t %s" % (self.first_name, self.last_name, self.phone_number)
        else:
            return "%s %s %s \t %s" % (self.title, self.first_name, self.last_name, self.phone_number)

    def set_first_name(self, first_name):
        self.first_name = first_name

    def set_title(self, title):
        self.title = title


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Beginner questions regarding Python classes

Beginner questions regarding Python classes


By : Chris F
Date : March 29 2020, 07:55 AM
wish of those help The instance reference in Python is explicit. That way it can be manipulated by e.g. decorators before finally being passed to the method.
We need to declare x and y as arguments to the function so that we can use their names within the function, bound to the arguments passed in the corresponding function call.
classes in Python for a beginner

classes in Python for a beginner


By : DasLampe
Date : March 29 2020, 07:55 AM
it fixes the issue Could you please help me to find the problem? Python code that works:
code :
def __init__(self, parent, b):
    self = wx.Frame(parent = parent, id=-1, title="Parameters")
    self.a = b
class ParamWindow(wx.Frame):
    def __init__(self, parent, b):
        # Initialize the superclass (wx.Frame).
        super(ParamWindow, self).__init__(parent=parent, id=-1, title="Parameters")
        self.a = b
        print self.a
python beginner: interaction of classes

python beginner: interaction of classes


By : simon80
Date : March 29 2020, 07:55 AM
I hope this helps . Main application loop (window.mainloop()) must be started after all the other statements in the program. When you create menu, your main window is already destroyed.
code :
    self.scrollbar.config(command=self.text.yview)
    self.text.pack()
    window.mainloop()    # Remove this line

...

window =  Tk()            
textfield = Textfield(window)
menu = Menubar(window, textfield.text)
window.mainloop()    # <----
classes, inheritance [beginner] Python

classes, inheritance [beginner] Python


By : daavid245
Date : November 13 2020, 05:40 AM
wish of those help You'll need to pass on the nazwa argument in the Kolo.__init__() method call:
code :
class Kolo(Figura):
    def __init__(self, nazwa, promien):
        Figura.__init__(self, nazwa)
        self.promien = promien
class Kolo(Figura):
    def __init__(self, nazwa, promien):
        super().__init__(nazwa)
        self.promien = promien

    def calculate(self):
        super().calculate()
        print(2 * 3.1415 * self.promien)
>>> class Figura(object):
...     def __init__(self,nazwa):
...         self.nazwa = nazwa
...     def calculate(self):
...         print(self.nazwa)
...
>>> class Kolo(Figura):
...     def __init__(self, nazwa, promien):
...         super().__init__(nazwa)
...         self.promien = promien
...     def calculate(self):
...         super().calculate()
...         print(2 * 3.1415 * self.promien)
...
>>> kolo1 = Kolo('kolo',4)
>>> kolo1.calculate()
kolo
25.132
Beginner question about classes in Python

Beginner question about classes in Python


By : user3092222
Date : March 29 2020, 07:55 AM
wish help you to fix your issue You have a problem with type comparison. You should compare it to int, str and list types, not to "int", "str" and "list" strings.
Here's the quick fix for your issue:
code :
class SortedList:
    def __init__(self, element):

        self.list = []
        if type(element) == int or type(element) == str:
            self.list = self.list + [element]

        if type(element) == list:
            self.list = self.list + element

        self.list.sort()


a = SortedList(5)
b = SortedList([7, 5, 8])

print(a.list)
print(b.list)
    class SortedList:
        def __init__(self, element):

            self.vals = []
            if isinstance(element, (int, str)):
                self.vals = self.vals + [element]

            if isinstance(element, list):
                self.vals = self.vals + element

            self.vals.sort()


    a = SortedList(5)
    b = SortedList([7, 5, 8])

    print(a.vals)
    print(b.vals)
class SortedList:
    def __init__(self, element):
        self.vals = element if isinstance(element, list) else [element]  # Convert to list if not a list

        if not all(isinstance(item, (int, str)) for item in self.vals):  # Ensure all items are either ints or strings
            raise TypeError("Incorrect Item Datatypes")

        self.vals.sort()

a = SortedList(5)
b = SortedList([7, 5, 8])

print(a.vals)
print(b.vals)
    c = SortedList([7.0, 5, 8])

    Traceback (most recent call last):
        File "tester.py", line 16, in <module>
            c = SortedList([7.0, 5, 8])
        File "tester.py", line 6, in __init__
            raise TypeError("Incorrect Item Datatypes")
        TypeError: Incorrect Item Datatypes
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