time.sleep() using Wasmer

[nunolima41]

Describe the bug

When compiling a Python script that uses the time.sleep() function to WebAssembly using py2wasm, the execution of the WebAssembly module stops when using the Wasmer Runtime. Other runtimes, it works, so I believe it's a wasmer specific issue.

This problem was already discussed in a Discord thread in the official Wasmer server, (https://discord.com/channels/1110300506942881873/1235299336401850518)

Steps to reproduce

I succesfully compiled this Python script using py2wasm.

import time

def fibonacci(n):
    fib_sequence = []
    a, b = 0, 1
    while len(fib_sequence) < n:
        fib_sequence.append(a)
        a, b = b, a + b
    return fib_sequence


def print_fibonacci(n):
    for num in fibonacci(n):
        print(num)
        time.sleep(2)

# Change the value of 'terms' to adjust the number of Fibonacci numbers printed
terms = 15
print_fibonacci(terms)

However, when i run this ('wasmer run Fibonacci.wasm'), the output it 0 and it stops. When i comment "time.sleep(2)", it prints the result correctly.

Expected behavior

The application should not stop after calling time.sleep.

[maminrayej]

This issue also happens when running the following command:

wasmer run python/python -- -c "import time; print('start'); time.sleep(1); print('end')"