Complex numbers

Python has a type representing complex numbers natively (complex). It can be created by adding a symbol j to the real numbers to denote the imaginary part. For example:

complex_value = 1 + 0.2j

On this type, you can perform normal calculations, print it, etc. But what if we want to extract only the real or imaginary part from a complex number? For this purpose, we use the attributes real and imag. Attributes are similar to methods: they are used by entering their names after the dot like variable.attribute, but without the parentheses . E.g:

complex_value = 1 + 0.2j 

print ("Re =", complex_value.real) 
print ("Im =", complex_value.imag)

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