Negative temperature fixed

persistence/persistent_init.json

@@ -11,5 +11,11 @@
 
   "clock" : {
     "test":""
+  },
+  "dashboard" : {
+    "test":""
+  },
+  "global" : {
+    "shopping_list" : []
   }
 }

persistence/rw.py

@@ -1,19 +1,37 @@
 import json
 import time
 import os
+import shutil
+
 class Variables():
     """"""
 
     def __init__(self, module_name, file_name="persistence/persistent_vars.json", init_name="persistence/persistent_init.json", ):
         self.path = file_name
         self.init_path = init_name
-        self.last_action = ""
 
         self.module = module_name
+
+        self.last_action = "" 
         # last performed action, if only reads are made, then the underlying var has not been changed
         # and doesn't need to be read again
         self.savefile = {}
 
+        if not os.path.exists(self.path):
+            shutil.copy(self.init_path, self.path)
+
+
+    def global_action(self, action, name, value=""):
+        old = self.module
+        self.module = "global"
+        action = getattr(self, action)
+        if value != "":
+            ret = action(name,value)
+        else:
+            ret = action(name)
+        self.module = old
+        return ret
+
     def write(self, name, value):
         pre = self.read("")
         pre[self.module][name] = value
@@ -28,23 +46,13 @@ class Variables():
 
     def read(self, name):
         if self.last_action == "read":
-            if name == "":
-                return self.savefile
-            else:
-                return self.savefile[self.module][name]
-
-        try:
-            if os.path.exists(self.path):
-                file_path = self.path
-            else:
-                file_path = self.init_path
-            file = open(file_path,"r")
+            vars = self.savefile
+        else:
+            file = open(self.path,"r")
             vars = json.load(file)
             file.close()
             self.savefile = vars
             self.last_action = "read"
-        except:
-            return None
 
         if name != "":
             vars = vars[self.module][name]
@@ -53,9 +61,11 @@ class Variables():
 
     def increment(self, name, inc=1):
         pre = self.read(name)
-        plus1 = pre + inc
-        self.write(name, plus1)
-
+        if pre:
+    	    self.write(name, pre + inc)
+        else:
+            self.write(name, inc)
+        
 
     def append_list(self, name, value):
         pre = self.read(name)