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Copy file name to clipboardExpand all lines: contrib/advanced-python/MultiThreadingg.md
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# MultiThreading in python
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>> Introduction
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Multithreading in Python allows you to run multiple threads (smaller units of a process) simultaneously, enabling concurrent execution of tasks. This can be particularly useful for I/O-bound operations or when you need to perform multiple operations at the same time.
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Multithreading in Python allows you to run multiple threads (smaller units of a process) simultaneously, enabling concurrent execution of
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tasks. This can be particularly useful for I/O-bound operations or when you need to perform multiple operations at the same time.
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>> Why Use Multithreading?
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1.Improved performance: Allows multiple tasks to run concurrently, which can lead to more efficient utilization of resources.
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2.Responsive applications: Keeps your applications responsive, especially during long-running operations.
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3.Better resource utilization: Makes better use of system resources, especially in I/O-bound applications.
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- Threading Module
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Python's threading module provides a way to create and manage threads. It includes the Thread class, which represents an individual thread of execution.
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Python's threading module provides a way to create and manage threads. It includes the Thread class, which represents an individual thread of
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execution.
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**Creating a Thread**
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To create a new thread, you can instantiate the Thread class and provide a target function to be executed by the thread.
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thread.join()
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- Synchronizing Threads
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When multiple threads access shared resources, synchronization is necessary to avoid data corruption. The threading module provides synchronization primitives like Lock, RLock, Semaphore, and Condition.
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When multiple threads access shared resources, synchronization is necessary to avoid data corruption. The threading module provides
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synchronization primitives like Lock, RLock, Semaphore, and Condition.
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- Example using Lock
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thread.join()
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- Thread Communication
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Threads can communicate using shared variables, but this requires careful synchronization. Another approach is to use thread-safe data structures like Queue from the queue module.
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Threads can communicate using shared variables, but this requires careful synchronization. Another approach is to use thread-safe data
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structures like Queue from the queue module.
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** Example using Queue
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thread.join()
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>> Common Pitfalls
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1.Global Interpreter Lock (GIL): Python's GIL can limit the performance benefits of threading for CPU-bound tasks. Consider using multiprocessing for such tasks.
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2.Race conditions: Ensure proper synchronization to avoid race conditions when accessing shared resources.
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Deadlocks: Be cautious of deadlocks when using multiple locks.
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1.Global Interpreter Lock (GIL): Python's GIL can limit the performance benefits of threading for CPU-bound tasks. Consider using
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multiprocessing for such tasks.
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2.Race conditions: Ensure proper synchronization to avoid race conditions when accessing shared resources.
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Deadlocks: Be cautious of deadlocks when using multiple locks.
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>> Conclusion
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Multithreading in Python is a powerful tool for concurrent execution, especially for I/O-bound tasks. By understanding and correctly implementing threading, you can significantly improve the performance and responsiveness of your applications.
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Multithreading in Python is a powerful tool for concurrent execution, especially for I/O-bound tasks. By understanding and correctly
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implementing threading, you can significantly improve the performance and responsiveness of your applications.
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