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class Complex(object): def __init__(self, real, imaginary): self.real = real self.imaginary = imaginary def __add__(self, no): real = self.real+no.real imaginary = self.imaginary+no.imaginary return Complex(real, imaginary) def __sub__(self, no): real = self.real-no.real imaginary = self.imaginary-no.imaginary return Complex(real, imaginary) def __mul__(self, no): real = self.real*no.real - self.imaginary*no.imaginary imaginary = self.real*no.imaginary + self.imaginary*no.real return Complex(real, imaginary) def __truediv__(self, no): denum = no.real**2 + no.imaginary**2 real = (self.real*no.real + self.imaginary*no.imaginary)/denum imaginary = (self.imaginary*no.real-self.real*no.imaginary)/denum return Complex(real, imaginary) def mod(self): real = math.sqrt(self.real**2+self.imaginary**2) return Complex(real, 0) def __str__(self): if self.imaginary == 0: result = "%.2f+0.00i" % (self.real) elif self.real == 0: if self.imaginary >= 0: result = "0.00+%.2fi" % (self.imaginary) else: result = "0.00-%.2fi" % (abs(self.imaginary)) elif self.imaginary > 0: result = "%.2f+%.2fi" % (self.real, self.imaginary) else: result = "%.2f-%.2fi" % (self.real, abs(self.imaginary)) return result
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Classes: Dealing with Complex Numbers
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