Python Corutines

corutines_examples.py

# Corutines

# Extension of generators
# They serve like "microservices"

def my_corutine():
    while True: # Alive microservice
        received_value = yield # This will freeze the corutine until a value is "send" to it
        # Do amazing work
        print("Job done with input", received_value)
        
service = my_corutine()
next(service) # This initializes the corutine until next yield

service.send(42)
# output: "Job done with input 42"

## Connect corutines "yield from"

# Corutines also can recieve values from other corutines

def wrapper(data):
    """Generator that yields data row by row"""
    for row in data:
        yield row
        
def wrapper(data):
    """Generator that yields data row by row"""
    yield from data
    
# Both functions do the same

# Important: when we want to consume from other service/corutine,
# you can use yield from to call that corutine and freeze yours
# waiting for an answer. Pretty cool uh?