Modules

def square(x) -> Int:
    return x * x

def add(a, b) -> Int:
    return a + b

pi = 3.14159

import "./math_utils.sns" as math

print(math.square(5))   # 25
print(math.add(2, 3))   # 5
print(math.pi)           # 3.14159

import "./b.sns" as b

import "./a.sns" as a