Add argument to str.format on line 11

fluentpython / example-code

Example code for the book Fluent Python, 1st Edition (O'Reilly, 2015)

http://bit.ly/fluentpy

MIT License

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Add argument to str.format on line 11 #42

Closed EONRaider closed 4 years ago

EONRaider commented 4 years ago

Without an argument, the usage statement generated an IndexError exception when calling the print() function. Adding the 'sys.argv[0]' argument to str.format solves the problem.