Challenge: Producer-Consumer with Processes
In many real-world applications, you need to coordinate work between different parts of a system running in parallel.
A common pattern for this is the producer-consumer scenario:
- A producer process generates data (such as numbers) and puts them into a shared
Queue; - At the same time, a consumer process retrieves data from the queue and processes it, for example by squaring each number and printing the result.
This pattern helps decouple data creation from data processing, making your programs more efficient and responsive when working with multiple processes.
Swipe to start coding
Implement a producer-consumer pattern using two separate processes and a multiprocessing.Queue.
- Complete the
producerfunction so that it puts all numbers from thenumberslist into thequeue. - After all numbers, the producer should put a single
'DONE'marker into the queue to signal the consumer to stop. - Complete the
consumerfunction so that it retrieves numbers from thequeue. For each number, print the string'Processed: {result}'whereresultis the square of the number. - The consumer should stop processing when it receives the
'DONE'marker and should not print anything for the'DONE'marker.
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Can you give an example of how to implement the producer-consumer pattern in Python?
What are some common issues to watch out for in producer-consumer scenarios?
How does using a queue help with synchronization between processes?
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Completion rate improved to 6.25Challenge: Producer-Consumer with Processes
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In many real-world applications, you need to coordinate work between different parts of a system running in parallel.
A common pattern for this is the producer-consumer scenario:
- A producer process generates data (such as numbers) and puts them into a shared
Queue; - At the same time, a consumer process retrieves data from the queue and processes it, for example by squaring each number and printing the result.
This pattern helps decouple data creation from data processing, making your programs more efficient and responsive when working with multiple processes.
Swipe to start coding
Implement a producer-consumer pattern using two separate processes and a multiprocessing.Queue.
- Complete the
producerfunction so that it puts all numbers from thenumberslist into thequeue. - After all numbers, the producer should put a single
'DONE'marker into the queue to signal the consumer to stop. - Complete the
consumerfunction so that it retrieves numbers from thequeue. For each number, print the string'Processed: {result}'whereresultis the square of the number. - The consumer should stop processing when it receives the
'DONE'marker and should not print anything for the'DONE'marker.
Рішення
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