Merge pull request #87 from DavidAmison/add_bot

Simple calculator bot

beards/mathbeard/python/mathbeard/__init__.py

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+# -*- coding: utf-8 -*-
+"""
+Created on Sat Feb  4 15:56:52 2017
+
+@author: David Amison
+"""
+import sympy as sp
+
+import telepot
+import telepot.aio
+from skybeard.decorators import onerror
+from skybeard.utils import get_args
+from skybeard.beards import BeardChatHandler
+from skybeard.predicates import regex_predicate
+
+class Calculator(BeardChatHandler):
+    __userhelp__ = '''
+    A calculator for doing numerical mathematics (not algebraic)
+    
+    Functions:
+        
+    /calc 'equation'    Calculates the answer to the equation input. The answer
+                is output based on the current format chosen and can be changed
+                using the /settings function
+    '''
+
+    __commands__ = [
+            ('calc','calculate','Performs a calculation')]
+
+    @onerror
+    async def calculate(self, msg):
+
+        #extract the equation input by the user
+        equation = get_args(msg, return_string = True)
+
+        await self.sender.sendMessage(equation)
+
+        #solve the equation
+        eq = sp.sympify(equation)   
+        result = eq.evalf(10)
+
+
+        await self.sender.sendMessage(result)

beards/mathbeard/requirements.txt

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+sympy

beards/mathbeard/setup_beard.py

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+from skybeard.utils import setup_beard
+
+setup_beard(
+    "mathbeard",
+)