Python · Useful Modules & Recipes

Your CLI prompts for a password with input(). A reviewer flags it as a security bug. Why, and what's the fix?

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You want to open a help page in the user's actual default browser from a script, with no GUI dependency. What does the standard library give you?

What's the difference in what gets shown on screen between getpass.getpass() and input() while the user types?

Which function returns the login name of the current OS user, without you parsing environment variables yourself?

What kind of object is a generator that uses value = (yield) rather than yield expr?

What does this print? ``` def printer(): while True: v = (yield) print(v) p = printer() p.send(87) ```

Before you can p.send(87) into a consuming generator, what one step must come first and why?

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