Added wolfram alpha module

Pipfile

@@ -16,6 +16,7 @@ igramscraper = "*"
 twitterscraper = "*"
 httpx = "*"
 pyyaml = "==5.3"
+wolframalpha = "*"
 
 [dev-packages]
 pylint = "*"

README.md

@@ -13,6 +13,15 @@ If you don't want some modules, just delete the files from modules directory.
 
 Support room: #hemppa:hacklab.fi - https://matrix.to/#/#hemppa:hacklab.fi
 
+## Hint: RSS Bridge
+
+RSS Bridge is awesome project that creates RSS feeds for sites that don't have them:
+https://github.com/RSS-Bridge/rss-bridge
+
+If you want bot to notify on new posts on a service, check out if RSS Bridge
+supports it! You can use the stock Matrix RSS bot to subscribe to feeds created
+by RSS bridge.
+
 ## Module list
 
 ### Bot
@@ -243,6 +252,22 @@ The module uses a demo API Key which can be replaced by your own api key by sett
 
 You can create one at https://api.nasa.gov/#signUp 
 
+### Wolfram Alpha
+
+Make queries to Wolfram Alpha
+
+You'll need to get an appid from https://products.wolframalpha.com/simple-api/documentation/
+
+Examples:
+
+* !wa 1+1
+* !wa airspeed of unladen swallow
+
+Commands:
+
+* !wa [query] - Query wolfram alpha
+* !wa appid [appid] - Set appid (must be done as bot owner)
+
 ## Bot setup
 
 * Create a Matrix user

modules/wa.py

@@ -0,0 +1,53 @@
+import urllib.request
+import wolframalpha
+
+from modules.common.module import BotModule
+
+
+class MatrixModule(BotModule):
+    app_id = ''
+
+    async def matrix_message(self, bot, room, event):
+        args = event.body.split()
+        if len(args) == 3:
+            if args[1] == "appid":
+                bot.must_be_owner(event)
+                self.app_id = args[2]
+                bot.save_settings()
+                await bot.send_text(room, 'App id set')
+                print('Appid', self.app_id)
+                return
+
+        if len(args) > 1:
+            if self.app_id == '':
+                await bot.send_text(room, 'Please get and set a appid: https://products.wolframalpha.com/simple-api/documentation/')
+                return
+
+            query = event.body[len(args[0])+1:]
+            client = wolframalpha.Client(self.app_id)
+            answer = query + ': '
+            try:
+                res = client.query(query)
+                for pod in res.results:
+                    for sub in pod.subpods:
+                        print(sub)
+                        answer += str(sub.plaintext) + "\n"
+            except Exception as exc:
+                answer = str(exc)
+
+            await bot.send_text(room, answer)
+        else:
+            await bot.send_text(room, 'Usage: !wa <query>')
+
+    def get_settings(self):
+        data = super().get_settings()
+        data['app_id'] = self.app_id
+        return data
+
+    def set_settings(self, data):
+        super().set_settings(data)
+        if data.get("app_id"):
+            self.app_id = data["app_id"]
+
+    def help(self):
+        return ('Wolfram Alpha search')