How do I use conditions in Python threading?
You can use the Condition
class from the threading
module to manage threads that need to wait for certain conditions.
Can you give me an example of how to implement it?
Sure! Here's a simple example:
import threading
condition = threading.Condition()
def thread_function():
with condition:
print('Thread is waiting for a condition.')
condition.wait() # Wait until notified
print('Thread has been notified!')
thread = threading.Thread(target=thread_function)
thread.start()
# Simulate some work in the main thread
import time
time.sleep(2)
with condition:
print('Notifying the waiting thread.')
condition.notify() # Notify the waiting thread
What does condition.wait()
do?
condition.wait()
makes the thread wait until it is notified. It releases the condition lock and allows other threads to acquire it.
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