what is a class in python
Classes are blueprint used to construct objectswhat is a class in python
Classes are blueprint used to construct objects@methodclass in python
class Date(object):
def __init__(self, day=0, month=0, year=0):
self.day = day
self.month = month
self.year = year
@classmethod
def from_string(cls, date_as_string):
day, month, year = map(int, date_as_string.split('-'))
date1 = cls(day, month, year)
return date1
@staticmethod
def is_date_valid(date_as_string):
day, month, year = map(int, date_as_string.split('-'))
return day <= 31 and month <= 12 and year <= 3999
date2 = Date.from_string('11-09-2012')
is_date = Date.is_date_valid('11-09-2012')why should i use classes in python
"Why should I use classes in python?"
Classes are essential in OOP.
A good reason to use classes is to make your code structured and organised.
Furthermore it is easy to import functions when they are part of a class since you can just import the class.
Classes provide methods that are useful such as the __repr__ method which allows you to represent an object by a string.
Classes allow for access control (encapsulation) by using the underscore character.python 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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