(Migrated from old blog)
Alrighty, Let’s Begin with something very easy and this will be the only easy task I think I have encountered here. Let’s begin with first programming task, writing Complex Number with the help of classes, overriding the addition and multiplication and other mathematical methods. Lets begin with Complex Number so Complex number has two parts: real number and complex number lets create a class…
Let’s begin with first programming task, writing Complex Number with the help of classes, overriding the addition and multiplication and other mathematical methods. Let’s begin with Complex Number so Complex number has two parts: real number and complex number lets create a class…
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class ComplexNumber:
def __init__(self, real, imaginary):
self.real = real
self.imaginary = imaginary
So with this, you can initialize a Complex Number with real and imaginary values. Lets, add try to create an object.
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a = ComplexNumber(2,5)
So now the Complex Number has real value as 2 and 5 as imaginary part lets override the basic methods of __add__ , __sub__ , __str__, __mul__ and __eq__ . As the name suggests __add__ will add two complex numbers, __sub__ will subtract two numbers, __str__ will print a stringified version of the number and __mul__ will multiply it and __eq__ will check for equality if they are equal or not.
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class ComplexNumber:
def __init__(self, real, imaginary):
self.real = real
self.imaginary = imaginary
def __add__(self, other):
return ComplexNumber(self.real + other.real, self.imaginary + other.imaginary)
def __sub__(self, other):
return ComplexNumber(self.real - other.real, self.imaginary - other.imaginary)
def __mul__(self, other):
return ComplexNumber(self.real*other.real, self.imaginary * other.imaginary)
def __eq__(self, other):
return self.real == other.real and self.imaginary == other.imaginary
def __str__(self):
return '{0} + {1}i'.format(self.real, self.imaginary) if self.real else '{0}i'.format(self.imaginary if self.imaginary else '')
Testing it with main function lets see how it runs..
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if __name__ == '__main__':
a = ComplexNumber(0, 9)
b = ComplexNumber(10, 5)
c = ComplexNumber(5, 2)
print('Str: a = {0} , b = {1} , c = {2} '.format(a, b, c))
print('Addition: {0}'.format(a+b))
print('Subtraction: {0}'.format(b-a))
print('Multiplication: {0}'.format(a*b))
print('Equality For True: {0}'.format(a == c))
print('Equality for False: {0}'.format(a == b))
Output:
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#We Get the Output As :
Str: a = 9i , b = 10 + 5i , c = 5 + 2i
Addition: 10 + 14i
Subtraction: 10 + -4i
Multiplication: 45i
Equality For True: False
Equality for False: False
Voila our first blog post. Lets keep them coming ;)