fulvia/modules/calc.py

#!/usr/bin/env python3
"""
A basic calculator and python interpreter application.
"""
import sys

import requests

from module import commands, example
from tools.calculation import eval_equation

BASE_TUMBOLIA_URI = 'https://tumbolia-two.appspot.com/'

@commands('calc', 'c')
@example('.c 5 + 3', '8')
def c(bot, trigger):
	"""Evaluate some calculation."""
	if len(trigger.args) < 2:
		return bot.reply("Nothing to calculate.")
	eqn = ' '.join(trigger.args[1:])
	try:
		result = eval_equation(eqn)
		result = "{:.10g}".format(result)
	except ZeroDivisionError:
		result = "Division by zero is not supported in this universe."
	except Exception as e:
		result = "{error}: {msg}".format(error=type(e), msg=e)
	bot.reply(result)


@commands('py')
@example('.py len([1,2,3])', '3')
def py(bot, trigger):
	"""Evaluate a Python expression."""
	if len(trigger.args) < 2:
		return bot.msg("Need an expression to evaluate")

	query = trigger.args[1]
	uri = BASE_TUMBOLIA_URI + 'py/'
	res = requests.get(uri + query)
	res.raise_for_status()
	answer = res.text
	answer = answer[:2000]
	if answer:
		#bot.msg can potentially lead to 3rd party commands triggering.
		bot.msg(answer, length=300)
	else:
		bot.reply('Sorry, no result.')