Added Python Generator to create tariff switcher

Creating the automation to switch all the tariffs is a pain. This script will do it for you by reading the file containing all the utilities `utility_meter:` and then it will create yaml for the automation to switch
python3 ./tariffSwitchGen.py packages/energy_utilities.yaml packages/electricity_tarriff_automations.yaml

tariffSwitchGen.py

@@ -0,0 +1,97 @@
+# Requires pyaml
+import sys
+import yaml
+import yaml.emitter
+import yaml.serializer
+import yaml.representer
+import yaml.resolver
+
+
+class IndentingEmitter(yaml.emitter.Emitter):
+    def increase_indent(self, flow=False, indentless=False):
+        """Ensure that lists items are always indented."""
+        return super().increase_indent(
+            flow=False,
+            indentless=False,
+        )
+
+
+class PrettyDumper(
+    IndentingEmitter,
+    yaml.serializer.Serializer,
+    yaml.representer.Representer,
+    yaml.resolver.Resolver,
+):
+    def __init__(
+        self,
+        stream,
+        default_style=None,
+        default_flow_style=False,
+        canonical=None,
+        indent=None,
+        width=None,
+        allow_unicode=None,
+        line_break=None,
+        encoding=None,
+        explicit_start=None,
+        explicit_end=None,
+        version=None,
+        tags=None,
+        sort_keys=True,
+    ):
+        IndentingEmitter.__init__(
+            self,
+            stream,
+            canonical=canonical,
+            indent=indent,
+            width=width,
+            allow_unicode=allow_unicode,
+            line_break=line_break,
+        )
+        yaml.serializer.Serializer.__init__(
+            self,
+            encoding=encoding,
+            explicit_start=explicit_start,
+            explicit_end=explicit_end,
+            version=version,
+            tags=tags,
+        )
+        yaml.representer.Representer.__init__(
+            self,
+            default_style=default_style,
+            default_flow_style=default_flow_style,
+            sort_keys=sort_keys,
+        )
+        yaml.resolver.Resolver.__init__(self)
+
+
+def main(args):
+    utilfile = args[0]
+    outfile = args[1]
+    with open(utilfile,'r') as f:
+        utility = yaml.safe_load(f)
+
+    svc = []
+
+    for i in utility['utility_meter'].keys():
+        if 'tariffs' in utility['utility_meter'][i].keys():
+            svcobj = dict(
+                service="select.select_option",
+                target=dict(
+                    entity_id="select.{}".format(i)
+                ),
+                data=dict(
+                    option="{{ tariff }}"
+                )
+            )
+
+            svc.append(svcobj)
+    x = dict(action=svc)
+
+    with open(outfile,'a') as f:
+        f.write(yaml.dump(x, Dumper=PrettyDumper))
+
+
+if __name__ == "__main__":
+    args = sys.argv[1:]
+    main(args)