Created
December 4, 2013 09:22
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An example of Coroutine in Python.
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| def read_producer(text, coroutines): | |
| for word in text.split(): | |
| for coroutine in coroutines: | |
| coroutine.send(word) | |
| for coroutine in coroutines: | |
| coroutine.close() | |
| def match_filter(pattern, next_coroutine): | |
| print("Looking for {0}".format(pattern)) | |
| try: | |
| while True: | |
| line = (yield) | |
| if pattern in line: | |
| next_coroutine.send(line) | |
| except GeneratorExit: | |
| print("Filter Done.") | |
| next_coroutine.close() | |
| def print_consumer(): | |
| print('Preparing to print') | |
| try: | |
| while True: | |
| line = (yield) | |
| print(line) | |
| except GeneratorExit: | |
| print("Consumer done.") | |
| def main(): | |
| text = "Commending spending is offending to people pending lending!" | |
| print("Original text: {0}".format(text)) | |
| printer = print_consumer() | |
| printer.next() | |
| m1 = match_filter("mend", printer) | |
| m2 = match_filter("pe", printer) | |
| m1.next() | |
| m2.next() | |
| read_producer(text, [m1, m2]) | |
| if __name__ == "__main__": | |
| main() |
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