Write a Python program that recursively copies files from the source directory, moves them to a new directory, and sorts them into subdirectories based on file extensions.

Also, consider the following conditions:

1. Argument Parsing: The script should accept two command-line arguments: the path to the source directory and the path to the destination directory (by default, if the destination directory is not provided, it should be named dist).

2. Recursive Directory Reading:

• Write a function that accepts a directory path as an argument.
• The function should iterate over all items in the directory.
• If an item is a directory, the function should call itself recursively for that directory.
• If an item is a file, it should be prepared for copying.

3. File Copying:

• For each file type, a new path should be created in the source directory using the file extension as the subdirectory name.
• The file with the corresponding type should be copied to the appropriate subdirectory.

4. Exception Handling: The code should handle exceptions properly, such as file or directory access errors.

Write a Python program that uses recursion to create a Koch snowflake fractal, with the recursion level specified by the user.

Write a program that moves disks from peg A to peg C using peg B as an auxiliary. Disks have different sizes and are initially placed on the starting peg in descending order from top to bottom.

1. Only one disk can be moved at a time.
2. A disk can only be placed on a larger disk or an empty peg. The input to the program is n — the number of disks on the starting peg. The output should log the sequence of steps to move the disks from peg A to peg C.