Python Programming Course

 1) Lecture 1

# Printing Hello world

print ("Hello world")

# Addition

a = 100

b = 100

c = a + b

print (c)

print (200+500)

# Substraction

a = 100

b = 100

c = a - b

print (c)

# Multiplication

a = 100

b = 100

c = a * b

print (c)

print ("so the sum of {} and {} is {}".format(a,b,c))

2) Python Variables and Constants 

#declaring  and Assigning value to constants

PI = 3.14

GRAVITY = 9.8

print(PI)

#Declaring and assigning value to a variable

a = "Apple"

print(a)

#Changing value of a variable

a = "Aeroplane"

print(a)

a = 100

print (a)

#Assigning Multiple values to a variables

b,c,d = 1, 2.5, "Hello"

print(b,c,d)

#Assigning same value to multiple variables

b = c = d = 5

print(b,c,d)

3) Python Class and Objects 

#Classes and Objects

class MyComplexNumber:

    #Constructor methods

    def __init__(self, real=0, imag=0):

        print("MyComplexNumber constructor executing...")

        self.real_part = real

        self.imaginary_part = imag

    def displayComplex(self):

        print(f"{self.real_part} + {self.imaginary_part}j")

#Create a new object of type MyComplexNumber class

cmplx1 = MyComplexNumber(40,50)

#Calling displayComplex() function

#Output :40 + 50j

cmplx1.displayComplex()

# Create another object of type MyComplexNumber class

# and create a new attribute 'new_attribute'

cmplx2 = MyComplexNumber(60,70)

cmplx2.new_attribute = 80

#Output:(60,70,80)

print((cmplx2.real_part, cmplx2.imaginary_part,cmplx2.new_attribute))

#but cmplx1 object doesn't have attribute 'new_attribute

print(cmplx1)

del cmplx1.real_part

del cmplx1

4)Python Array Implementation

#python Array implimentation

#Defining and declaring  and Arrays

arr = [10,20,30,40,50]

print(arr)

#Accessing elements of array

print(arr[0])

print(arr[1])

print(arr[2])

print(arr[-1]) #Negative Indexing

print(arr[-2]) #Negative Indexing

brands = ["Coke", "Apple", "Google", "Microsoft","Toyota"]

print(brands)

#Finding the length of an array

num_of_brands = len(brands)

print(num_of_brands)

#Adding an element to an array using append()

brands.append("intel")

print(brands)

#Removing elements of an array using indexing

fruits = ["Apple","Banana","Mango","Grapes","Orange"]

fruits[1] = "Pineapple"

fruits[-1] = "Guava"

print(fruits)

#Removing elements from an array

colors = ["violet","indigo","blue","green","yellow","orange"]

print(colors)

del colors[4]

colors.remove("orange")

colors.pop(3)

print(colors)

#Concatenating two Arrays using the + operator

concat = [1,2,3]

print(concat)

concat + [4,5,6]

print(concat)

concat = concat + [4,5,6]

print(concat)

#Repeating/repetaing elements of an array

repeat = ["a"]

print(repeat)

repeat = repeat*5

print(repeat)

#Slicing of an array

sli = [1,2,3,4,5,6,7,8,9,10]

print(sli[2:5])

print(sli[:5])

print(sli[5:])

print(sli[:])

fruits = ["Apple","Banana","Mango","Grapes","Orange"]

print(fruits)

print(fruits[1:4])

print(fruits[ :3])

print(fruits[-4: ])

print(fruits[-3: -1])

#Declaring and defining=g multidimenional array

multd = [[1,2], [3,4],[5,6],[7,8]]

print(multd)

print(multd[0])

print(multd[3])

print(multd[2][1])

print(multd[3][0])

5) Python Keywords and Identifiers

#Python Keywords and Identifiers

#True False

print(5 == 5)

print(5 > 5)

#None

print(None == 0)

print(None == False)

print(None == [])

print(None == None)

def a_void_function():

    a = 1

    b = 2

    c = a + b

x = a_void_function()

print(x)

#and ,or,not

print(True and False)

print(True or False)

print(not False)

#as

import math as myMath

print(myMath.cos(myMath.pi))

#assert

assert 5 > 4

assert 5 == 5

#break

for i in range(11):

    if i == 5:

        break

    print(i)

#Continue

for i in range(1,8):

    if i == 5:

        continue

    print(i)

#Class

class ExampleClass:

    def function1(parameters):

        print("Function0() Executing... ")

    def function2(parameters):

        print("Function2() Executing... ")

ob1 = ExampleClass()

ob1.function1()

ob1.function2()

#def

def function_name(parameters):

    pass

function_name(10)

#del

# a = 10

# print(a)

# del a

# print(a)

# name 'a' is not defined

#if..elif..else

num = 2

if num == 1:

    print("One")

elif num == 2:

    print("Two")

else:

    print("something else..")

#try ..raise...catch...finally

try:

    x = 9

    raise ZeroDivisionError

except ZeroDivisionError:

    print("Division cannot be performed")

finally:

    print("Execution Successfully")

#for

for i in range(1,10):

    print(1)

#from.. import

import math

from math import cos

6) Coming soon......