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

Question

Rosa Pennington

Computers & Technology

14 June, 20:32

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

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Answers (1)

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Raul Moses · Answer 1

See explaination for program code.

Explanation:

inputFileName = input ("Input filename: ") outputFileName = input ("Output filename: ") inputFile = open (inputFileName, "r") outputFile = open (outputFileName, "w") count = 1 for line in inputFile: newLine = str (count). rjust (4, " ") + "> " + line outputFile. write (newLine) print (newLine) count + = 1