PYTHON

4. Octal numbers have a base of eight and the digits 07. Write the scripts octalToDecimal.py and decimalToOctal.py, which convert numbers between the octal and decimal representations of integers. These scripts use algorithms that are similar to those of the binaryToDecimal and decimalToBinary scripts developed in Section 4-3.

8. Write a script named copyfile.py. This script should prompt the user for the names of two text files. The contents of the first file should be input and written to the second file.

9. Write a script named numberlines.py. This script creates a program listing from a source program. This script should prompt the user for the names of two files. The input filename could be the name of the script itself, but be careful to use a different output filename! The script copies the lines of text from the input file to the output file, numbering each line as it goes. The line numbers should be right-justified in 4 columns, so that the format of a line in the output file looks like this example: 1> This is the first line of text.

10. Write a script named dif.py. This script should prompt the user for the names of two text files and compare the contents of the two files to see if they are the same. If they are, the script should simply output "Yes". If they are not, the script should output "No", followed by the first lines of each file that differ from each other. The input loop should read and compare lines from each file. The loop should break as soon as a pair of different lines is found.

12. The Payroll Department keeps a list of employee information for each pay period in a text file. The format of each line of the file is the following: Write a program that inputs a filename from the user and prints to the terminal a report of the wages paid to the employees for the given period. The report should be in tabular format with the appropriate header. Each line should contain an employees name, the hours worked, and the wages paid for that period