In some situations, you need to convert a number explicitly from one type to another to satisfy some requirements. Python does this internally in an expression

• Type int(a) to convert a into an integer
• Type float(a) to convert a into a floating-point number
• Type complex(a) to convert a into a complex number with real part x and imaginary part zero
• Type complex(a, b) to convert a and b into a complex number with real part a and imaginary part b. a and b are numeric expressions