what is a class in python
Classes are blueprint used to construct objectswhat is a class in python
Classes are blueprint used to construct objectswhat is a class in python
A class is a block of code that holds various functions. Because they
are located inside a class they are named methods but mean the samne
thing. In addition variables that are stored inside a class are named
attributes. The point of a class is to call the class later allowing you
to access as many functions or (methods) as you would like with the same
class name. These methods are grouped together under one class name due
to them working in association with eachother in some way.python classmethod
class point:
def __init__(self, x, y):
self.x = x
self.y = y
@classmethod
def zero(cls):
return cls(0, 0)
def print(self):
print(f"x: {self.x}, y: {self.y}")
p1 = point(1, 2)
p2 = point().zero()
print(p1.print())
print(p2.print())python classmethod
# classmethod example
In [20]: class MyClass:
...: @classmethod
...: def set_att(cls, value):
...: cls.att = value
...:
In [21]: MyClass.set_att(1)
In [22]: MyClass.att
Out[22]: 1
In [23]: obj = MyClass()
In [24]: obj.att
Out[24]: 1
In [25]: obj.set_att(3)
In [26]: obj.att
Out[26]: 3
In [27]: MyClass.att
Out[27]: 3python class with function @classmethod
import numpy as np
class Unknown:
def __init__(self, p1, p2, p3, p4):
self.p1 = p1
self.p2 = p2
self.p3 = p3
self.p4 = p4
def random_func(self, p5):
'''Function that return an array from a range,
with specified shape, and name'''
step1 = np.array(np.arange(self.p1)).reshape((self.p2,self.p3))
step2 = self.p4
print(step2)
print('Printing p5 =>', p5)
return step1
@classmethod
def a_class_method(self, p6):
print(f'This is a class method: {p6}')
#PREPARE PARAMS
# cust_arr = random_func(self.p1, self.p2, self.p3, self.p4)
params = {'p1':12, 'p2':3, 'p3':4, 'p4':'Creating customized array with params'}
#INSTANCIATE
here = Unknown(**params)#16, 4, 4, 'This actually work too!')
here.random_func('This is P5')
Unknown.a_class_method('P6 value is now used !')Copyright © 2021 Codeinu
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