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Python 2021-09-11 10:19:02
python context manager example
class File: def __init__(self, filename, method): self.file = open(filename, method) def __enter__(self): print("Enter") return self.file def __exit__(self, type, value, traceback): print(f"{type}, {value}, {tra... Add solution -
Python 2021-09-10 09:52:03
change form type flask from text to selection flask admin
class MyModel(db.Model): id = db.Column(db.Integer, primary_key=True) my_field = db.Column(db.String(128)) # Field I would like to be choices class MyModelView(ModelView): """ Admin manager for MyMode... Add solution -
Python 2021-09-09 16:34:03
Python subclassing a class with custom __new__
# python messing with __new__ and __init__ # create an instance that returns itself or its subclass, or whatever # depending on whatever condition we have created class parent: def __new__(cls, *args): print('parent', i, args) # see below ... Add solution -
Python 2021-09-09 04:20:02
python copy class object
""" I've read that there are problems with this approach, but it never let me down """ import copy class Dummy: def __init__(self, signature = 1, some_list = []): self.signature = signature self.list = s... Add solution -
Python 2021-09-08 22:30:02
wxpython custom dialog
#!/usr/bin/env python ''' ZetCode wxPython tutorial In this code example, we create a custom dialog. author: Jan Bodnar website: www.zetcode.com last modified: July 2020 ''' import wx class ChangeDepthDialog(wx.Dialog): def __init__(self, *args,... Add solution -
C++ 2021-09-08 05:04:03
public private protected c++
#include <iostream> // Visibility is how visible certain members or methods of class are , who can see them ,who can call them and who can use them //Visibility has no effect on performance of your program it is ust for organizing code //Three basic... Add solution
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