1#!/usr/bin/env python
2"""
3Multiply two numbers together, but with a delay before returning.
4This mimics a computation that has to be fetched from a remote server.
5
6This example also shows how to handle functions that take multiple inputs.
7"""
8
9import time
10
11from concurrently import concurrently
12
13
14def sleepy_multiply(x, y):
15    """
16    Multiply two numbers together, but with a random delay.
17    """
18    time.sleep(x / 10)
19    return x * y
20
21
22if __name__ == "__main__":
23    inputs = [
24        (1, 2),
25        (2, 3),
26        (7, 4),
27        (3, 1),
28        (5, 2),
29        (4, 9),
30        (7, 2),
31        (6, 1),
32    ]
33
34    for (x, y), output in concurrently(lambda x: sleepy_multiply(*x), inputs=inputs):
35        print(x, "*", y, "=", output)