Write a Python program to demonstrate multithreading. Your code shall first create a file for writing called "synch.txt" (autograder will be looking for this file). Then it will create two separate threads, Thread-A and Thread-B (call them whatever you want). Both threads will open synch.txt and write to it. Thread-A will write the numbers 1 - 26 twenty times in nested for loops then exit. In other words, print 1 - 26 over and over again on separate lines for at least 20 times. Thread-B will write the letters A - Z twenty times in nested for loops then exit. We will not learn process synchronization in this class, but if you feel like it, you may use a mutex lock to control synchronization between the two threads. When the program is complete, the synch.txt file "should" look like this:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26

..... 20x

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

... 20x

However, you will notice that if you do not use a mutex lock, your file might look a little different. That's ok. You won't be graded on what your output looks like. You will only be graded on your use of two threads to write to a file named synch.txt.

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