concept command line in category python

This is an excerpt from Manning's book Tiny Python Projects: Learn coding and testing with puzzles and games. Login to get full access to this book.

The following snippet creates a parser that will deal with the arguments from the command line. To “parse” here means to derive some meaning from the order and syntax of the bits of text provided as arguments:

Figure 0.7 The Repl.it tool has an autoformat button to reformat your code according to community standards. The interface also includes a command line for running and testing your program.

Our program will also accept an -o or --outfile option that names an output file into which the output text should be written. In that case, nothing will be printed on the command line: $ ./howler.py -o out.txt 'How dare you steal that car!'

This is an excerpt from Manning's book Hello! Python. Login to get full access to this book.

There are many different ways to access and run programs. Double-clicking through the GUI is one way; the command line is another. You’ll learn several during the course of the book.

Running from the command line is also easier when you have a program that has a bug, because you’ll see an error message, rather than seeing no window or having your window close immediately.