Learn Python: Complex Numbers / Random Numbers?

Complex

Complex numbers are written with a "j" as the imaginary part: There is an example you can try it with your editor.

Example

Complex:

x = 3+5j
y = 5j
z = -5j

print(type(x))
print(type(y))
print(type(z))

Open editor

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Type Conversion

You can convert from one type to another with the int(), float(), and complex() methods:

Example

Convert from one type to another:

x = 1 # inty = 2.8 # floatz = 1j # complex
#convert from int to float:a = float(x)

#convert from float to int:b = int(y)

#convert from int to complex:c = complex(x)

print(a)
print(b)
print(c)

print(type(a))
print(type(b))
print(type(c))

#Open Editor

Note: You cannot convert complex numbers into another number type.

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Random Number

Python does not have a random() function to make a random number, but Python has a built-in module calledrandom that can be used to make random numbers:

Example

Import the random module, and display a random number between 1 and 9:

import random

print(random.randrange(1,10))

#Open Editor