Math filters that've been in use for a bit now

analyzer/templatetags/math.py

@@ -0,0 +1,27 @@
+from django.template import Library
+
+register = Library()
+
+@register.filter
+def mult(value, arg):
+    "Multiplies the arg and the value"
+    return int(value) * int(arg)
+
+@register.filter
+def sub(value, arg):
+    "Subtracts the arg from the value"
+    return int(value) - int(arg)
+
+@register.filter
+def div(value, arg):
+    "Divides the value by the arg"
+    return int(value) / int(arg)
+
+@register.filter
+def getsum(value):
+    if type(value) == dict:
+        return sum(value.values())
+    elif type(value) == list:
+        return sum(value)
+    else:
+        return 0