22 "cells" : [
33 {
44 "cell_type" : " markdown"
5- "metadata" : {},
65 "source" : [
76 " # OOPS:\n "
87 " \n "
98 " Object Oriented Programming or OOP is working with classes and objects. It involves interaction between objects having various attributes.\n "
109 " \n "
1110 " Python is a object oriented programming language. This meand that all the types are representation or instance of a type class."
12- ]
11+ ],
12+ "metadata" : {}
1313 },
1414 {
1515 "cell_type" : " markdown"
16- "metadata" : {},
1716 "source" : [
1817 " ## Components:\n "
1918 " 1. Class\n "
2019 " 2. Object\n "
21- ]
20+ ],
21+ "metadata" : {}
2222 },
2323 {
2424 "cell_type" : " markdown"
25- "metadata" : {},
2625 "source" : [
2726 " ## Class:\n "
2827 " \n "
3332 " Name of a class should start with an uppercase letter.\n "
3433 " \n "
3534 " Syntax: `class Class_name`"
36- ]
35+ ],
36+ "metadata" : {}
3737 },
3838 {
3939 "cell_type" : " code"
4040 "execution_count" : 1 ,
41- "metadata" : {},
42- "outputs" : [],
4341 "source" : [
44- " class Student: \n "
45- " roll_no = int()\n "
42+ " class Students: \r \n"
43+ " roll_no = int()\r\ n "
4644 " name = str()"
47- ]
45+ ],
46+ "outputs" : [],
47+ "metadata" : {}
4848 },
4949 {
5050 "cell_type" : " markdown"
51- "metadata" : {},
5251 "source" : [
5352 " ## Object:\n "
5453 " \n "
5554 " It is an instance of a class.\n "
5655 " \n "
5756 " Syntax: `obj_name = Class_name()`"
58- ]
57+ ],
58+ "metadata" : {}
5959 },
6060 {
6161 "cell_type" : " code"
6262 "execution_count" : 2 ,
63- "metadata" : {},
64- "outputs" : [],
6563 "source" : [
66- " student1 = Student () # creating a new object\n "
67- " \n "
68- " student1.roll_no = 1\n "
64+ " student1 = Students () # creating a new object\r \n"
65+ " \r\ n "
66+ " student1.roll_no = 1\r\ n "
6967 " student1.name = 'Prabhu'"
70- ]
68+ ],
69+ "outputs" : [],
70+ "metadata" : {}
7171 },
7272 {
7373 "cell_type" : " code"
7474 "execution_count" : 3 ,
75- "metadata" : {},
75+ "source" : [
76+ " print(student1.name)\r\n "
77+ " print(student1.roll_no)"
78+ ],
7679 "outputs" : [
7780 {
78- "name" : " stdout"
7981 "output_type" : " stream"
82+ "name" : " stdout"
8083 "text" : [
8184 " Prabhu\n "
8285 " 1\n "
8386 ]
8487 }
8588 ],
86- "source" : [
87- " print(student1.name)\n "
88- " print(student1.roll_no)"
89- ]
89+ "metadata" : {}
9090 },
9191 {
9292 "cell_type" : " markdown"
93- "metadata" : {},
9493 "source" : [
9594 " ## *self* Keyword:\n "
9695 " \n "
9796 " Calls the attributes for current instance or object.\n "
9897 " \n "
9998 " Syntax: `self.attribute_name`"
100- ]
99+ ],
100+ "metadata" : {}
101101 },
102102 {
103103 "cell_type" : " markdown"
104- "metadata" : {},
105104 "source" : [
106105 " ## Defining attributes in a class:\n "
107106 " \n "
111110 " Executes a set of code whenever a new object/instance is created.\n "
112111 " \n "
113112 " Defined by \\ _\\ _init\\ _\\ _ method."
114- ]
113+ ],
114+ "metadata" : {}
115115 },
116116 {
117117 "cell_type" : " code"
118118 "execution_count" : 7 ,
119- "metadata" : {},
120- "outputs" : [],
121119 "source" : [
122- " class Student:\n "
123- " def __init__(self): # default constructor\n "
124- " self.roll_no = 0\n "
125- " self.name = 'Name'\n "
126- " # print('__init__ file')\n "
127- " \n "
128- " def study(): \n "
120+ " class Student:\r\ n "
121+ " def __init__(self): # default constructor\r\ n "
122+ " self.roll_no = 0\r\ n "
123+ " self.name = 'Name'\r\ n "
124+ " # print('__init__ file')\r\ n "
125+ " \r\ n "
126+ " def study(self): \r \n"
129127 " print('Studying....')"
130- ]
128+ ],
129+ "outputs" : [],
130+ "metadata" : {}
131131 },
132132 {
133133 "cell_type" : " code"
134134 "execution_count" : 8 ,
135- "metadata" : {},
135+ "source" : [
136+ " st1 = Student()\r\n "
137+ " st1.roll_no = 1\r\n "
138+ " st1.name = 'Ravi'\r\n "
139+ " print(f'Roll No: {st1.roll_no}, Name: {st1.name}')"
140+ ],
136141 "outputs" : [
137142 {
138- "name" : " stdout"
139143 "output_type" : " stream"
144+ "name" : " stdout"
140145 "text" : [
141146 " __init__ file\n "
142147 " Roll No: 1, Name: Ravi\n "
143148 ]
144149 }
145150 ],
146- "source" : [
147- " st1 = Student()\n "
148- " st1.roll_no = 1\n "
149- " st1.name = 'Ravi'\n "
150- " print(f'Roll No: {st1.roll_no}, Name: {st1.name}')"
151- ]
151+ "metadata" : {}
152152 },
153153 {
154154 "cell_type" : " code"
155155 "execution_count" : 9 ,
156- "metadata" : {},
157- "outputs" : [],
158156 "source" : [
159- " class Student: \n "
160- " def __init__(self, rn = 0, st_name = 'Name'): # Parametric Constructor\n "
161- " self.roll_no = rn\n "
162- " self.name = st_name\n "
163- " # print('__init__ file')\n "
164- " \n "
165- " def study(): \n "
157+ " class Student_details: \r \n"
158+ " def __init__(self, rn = 0, st_name = 'Name'): # Parametric Constructor\r\ n "
159+ " self.roll_no = rn\r\ n "
160+ " self.name = st_name\r\ n "
161+ " # print('__init__ file')\r\ n "
162+ " \r\ n "
163+ " def study(self): \r \n"
166164 " print('Studying....')"
167- ]
165+ ],
166+ "outputs" : [],
167+ "metadata" : {}
168168 },
169169 {
170170 "cell_type" : " code"
171171 "execution_count" : 10 ,
172- "metadata" : {},
172+ "source" : [
173+ " st2 = Student_details(2, 'Rahul')\r\n "
174+ " print(f'Roll No: {st2.roll_no}, Name: {st2.name}')"
175+ ],
173176 "outputs" : [
174177 {
175- "name" : " stdout"
176178 "output_type" : " stream"
179+ "name" : " stdout"
177180 "text" : [
178181 " Roll No: 2, Name: Rahul\n "
179182 ]
180183 }
181184 ],
182- "source" : [
183- " st2 = Student(2, 'Rahul')\n "
184- " print(f'Roll No: {st2.roll_no}, Name: {st2.name}')"
185- ]
185+ "metadata" : {}
186186 },
187187 {
188188 "cell_type" : " markdown"
189- "metadata" : {},
190189 "source" : [
191190 " ## destructor:\n "
192191 " Delete the current instance of class or object.\n "
193192 " \n "
194193 " Use \\ _\\ _del\\ _\\ _ method"
195- ]
194+ ],
195+ "metadata" : {}
196196 },
197197 {
198198 "cell_type" : " markdown"
199- "metadata" : {},
200199 "source" : [
201200 " ## Some other methods:\n "
202201 " \n "
211210 " 0. \\ _\\ _eq\\ _\\ _ - equal\n "
212211 " 5. \\ _\\ _getitem\\ _\\ _ - get a key from a iterable\n "
213212 " 6. \\ _\\ _setitem\\ _\\ _ - set a value to the given key of iterable"
214- ]
213+ ],
214+ "metadata" : {}
215215 },
216216 {
217217 "cell_type" : " markdown"
218- "metadata" : {},
219218 "source" : [
220219 " ## Private variables and methods:\n "
221220 " \n "
227226 " But if needed, use the following syntax:\n "
228227 " \n "
229228 " `obj._classname__attribute`"
230- ]
229+ ],
230+ "metadata" : {}
231231 },
232232 {
233233 "cell_type" : " markdown"
234- "metadata" : {},
235234 "source" : [
236235 " ## Calling a method in another method inside the class:\n "
237236 " \n "
238237 " Use self keyword to call the function."
239- ]
238+ ],
239+ "metadata" : {}
240240 },
241241 {
242242 "cell_type" : " markdown"
243- "metadata" : {},
244243 "source" : [
245244 " ## Definining run time class attributes:"
246- ]
245+ ],
246+ "metadata" : {}
247247 },
248248 {
249249 "cell_type" : " markdown"
250- "metadata" : {},
251250 "source" : [
252251 " ## Methods of attributes:"
253- ]
252+ ],
253+ "metadata" : {}
254254 },
255255 {
256256 "cell_type" : " code"
257257 "execution_count" : null ,
258- "metadata " : {} ,
258+ "source " : [] ,
259259 "outputs" : [],
260- "source " : []
260+ "metadata " : {}
261261 }
262262 ],
263263 "metadata" : {
281281 },
282282 "nbformat" : 4 ,
283283 "nbformat_minor" : 4
284- }
284+ }
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