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| """ | |
| # 2 class object instance is at 2 diff location of memory | |
| class Student: | |
| pass | |
| student = Student() | |
| print (student) | |
| new_student = Student() | |
| print (new_student) | |
| """ | |
| # EVOLUTION | |
| """ | |
| students = [] | |
| class Student: | |
| def add_student(self, name, student_id=332): | |
| student = {"name": name, "student_id": student_id} | |
| students.append(student) | |
| student = Student() | |
| student.add_student("Mark") | |
| print (students) | |
| """ | |
| # Construtors and Special Methos | |
| # EVOLUTION - Construtors method would be automatically get called when you instantiate a class in backgroup | |
| # We can customize a class instantiate behaviour by modifying Construtors method. | |
| """ | |
| students = [] | |
| class Student: | |
| def __init__(self, name, student_id=332): | |
| student = {"name": name, "student_id": student_id} | |
| students.append(student) | |
| mark = Student("Mark") | |
| print (students) | |
| # How to fix this? | |
| print (mark) | |
| """ | |
| # Construtors and Special Methos | |
| # EVOLUTION - | |
| """ | |
| students = [] | |
| class Student: | |
| def __init__(self, name, student_id=332): | |
| student = {"name": name, "student_id": student_id} | |
| students.append(student) | |
| def __str__(self): | |
| return "Student" | |
| mark = Student("Mark") | |
| print (students) | |
| print (mark) | |
| """ | |
| # EVOLUTION - Instance and Class Attributes | |
| # Instance Attribute This one. | |
| students = [] | |
| class Student: | |
| school_name = "DevOps School" | |
| def __init__(self, name, student_id=332): | |
| self.name = name | |
| self.student_id = student_id | |
| students.append(self) | |
| def __str__(self): | |
| return "Student" | |
| def get_name_capitaize(self): | |
| return self.name.get_name_capitaize() | |
| def get_school_name(self): | |
| return self.school_name | |
| mark = Student("Mark") | |
| print (students) | |
| print (mark) | |
| print(Student.school_name) |
by
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| students = [] | |
| class Student: | |
| school_name = "Springfield Elementary" | |
| def __init__(self, name, student_id=332): | |
| self.name = name | |
| self.student_id = student_id | |
| students.append(self) | |
| def __str__(self): | |
| return "Student " + self.name | |
| def get_name_capitalize(self): | |
| return self.name.capitalize() | |
| def get_school_name(self): | |
| return self.school_name | |
| class HighSchoolStudent(Student): | |
| school_name = "Springfield High School" | |
| def get_school_name(self): | |
| return "This is a High School student" | |
| def get_name_capitalize(self): | |
| original_value = super().get_name_capitalize() | |
| return original_value + "-HS" | |
| james = HighSchoolStudent("james") | |
| print(james.get_name_capitalize()) |
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| """ | |
| Create a Class | |
| Class Attribute | |
| The __init__() Method | |
| The self Parameter | |
| Methods | |
| Method1 - ie. CREATE | |
| Instance Attribute | |
| Instance Attribute | |
| Method2 - ie. READ | |
| Instance Attribute | |
| Instance Attribute | |
| Method3 - ie. UPDATE | |
| Instance Attribute | |
| Instance Attribute | |
| Method3 - ie. DELETE | |
| Instance Attribute | |
| Instance Attribute | |
| """ | |
| class Car: | |
| # class attribute | |
| wheels = 4 | |
| # initializer with instance attributes | |
| def __init__(self, color, style): | |
| self.color = color | |
| self.style = style | |
| # Calling a Class and it would create OBJECT | |
| c = Car('Sedan', 'Black') | |
| d = Car('Maruti', 'Blue') | |
| # Access attributes | |
| print(c.style) # Sedan | |
| print(c.color) # Black | |
| # Access attributes | |
| print(d.style) # Sedan | |
| print(d.color) # Black |
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| class Car: | |
| # class attribute | |
| wheels = 4 | |
| # initializer / instance attributes | |
| def __init__(self, color, style): | |
| self.color = color | |
| self.style = style | |
| # method 1 | |
| def showDescription(self): | |
| print("This car is a", self.color, self.style) | |
| # method 2 | |
| def changeColor(self, color): | |
| self.color = color | |
| c = Car('Black', 'Sedan') | |
| # call method 1 | |
| c.showDescription() # This car is a Black Sedan | |
| # call method 2 and set color | |
| c.changeColor('White') | |
| c.showDescription() # This car is a White Sedan | |
| # Deleting a Attributes | |
| del c.color | |
| # Deleting an Object | |
| del c |
I’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I am working at Cotocus. I blog tech insights at DevOps School, travel stories at Holiday Landmark, stock market tips at Stocks Mantra, health and fitness guidance at My Medic Plus, product reviews at I reviewed , and SEO strategies at Wizbrand.
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