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#!/usr/bin/env python
"""A sample application for cmd2 demonstrating customized environment parameters."""
import cmd2
class EnvironmentApp(cmd2.Cmd):
"""Example cmd2 application."""
def __init__(self) -> None:
super().__init__()
self.degrees_c = 22
self.sunny = False
self.add_settable(
cmd2.Settable('degrees_c', int, 'Temperature in Celsius', self, onchange_cb=self._onchange_degrees_c)
)
self.add_settable(cmd2.Settable('sunny', bool, 'Is it sunny outside?', self))
def do_sunbathe(self, _arg) -> None:
"""Attempt to sunbathe."""
if self.degrees_c < 20:
result = f"It's {self.degrees_c} C - are you a penguin?"
elif not self.sunny:
result = 'Too dim.'
else:
result = 'UV is bad for your skin.'
self.poutput(result)
def _onchange_degrees_c(self, _param_name, _old, new) -> None:
# if it's over 40C, it's gotta be sunny, right?
if new > 40:
self.sunny = True
if __name__ == '__main__':
import sys
c = EnvironmentApp()
sys.exit(c.cmdloop())
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