Python Multi-threading and Concurrency: Creating and managing threads

Last update on April 02 2025 05:31:33 (UTC/GMT +8 hours)

1. Multiple Threads Creation

Write a Python program to create multiple threads and print their names.

Sample Solution:

Python Code

import threading
def print_thread_names():
    print("Current thread name:", threading.current_thread().name)
# Create multiple threads
threads = []
for i in range(7):
    thread = threading.Thread(target=print_thread_names)
    threads.append(thread)
    thread.start()

# Wait for all threads to complete
for thread in threads:
    thread.join()

Sample Output:

Current thread name: Thread-6
Current thread name: Thread-7
Current thread name: Thread-8
Current thread name: Thread-9
Current thread name: Thread-10
Current thread name: Thread-11
Current thread name: Thread-12

Explanation:

In the above exercise,

• The "print_thread_names()" function is defined, which simply prints the current thread name using threading.current_thread().name.
• We create a list of threads to store thread objects.
• Using a loop, we create 7 threads and add them to the threads list. Each thread is assigned by the "print_thread_names()" function as the target.
• We start each thread by calling its start method.
• After starting all the threads, we use another loop to call the join method on each thread. Prior to exiting, the program waits for all threads to complete.

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Python program that creates 5 threads, each printing its own name and a unique ID, then waits for all threads to complete.
• Write a Python script to spawn a user-specified number of threads, have each thread sleep for a random time, and print its name upon waking up.
• Write a Python function that creates multiple threads to execute a dummy task and then prints each thread’s name along with its start time.
• Write a Python program to create multiple threads that print their names in reverse order of their creation using thread synchronization.

Python Code Editor :

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