Differences

This shows you the differences between two versions of the page.

--- python:python_misc:properties_in_python_classes [2019/02/19 23:12] – mithat
+++ python:python_misc:properties_in_python_classes [2019/02/19 23:16] – mithat
@@ Line 6: / Line 6: @@
 class ClickerCounter():
     def __init__(self, upper):
-        self.count = 0       # instance variable for storing the count
+        self.__count = 0     # instance variable for storing the count
         self.__limit = upper # instance variable for storing the limit
     def click(self):
         """
-        Click the counter: advance the count by one and reset if
+        Advance the count by one and reset if over the upper limit.
-        over the upper limit.
         """
-        self.count = self.count + 1
+        self.__count += 1
         # wrap the count if over the limit
-        if self.count > self.__limit:
+        if self.__count > self.__limit:
-            self.count = 0
+            self.__count = 0
     def reset(self):
         """Reset the counter."""
-        self.count = 0
+        self.__count = 0
+    @property
+    def count(self):
+        return self.__count
     @property
     def limit(self):
         return self.__limit
     @limit.setter
     def limit(self, l):
@@ Line 34: / Line 37: @@
         else:
             print('Invalid new limit:', l)
 c = ClickerCounter(100)
 c.click()
 c.click()
-print(c.count)
+print(c.count)  # 2
-print(c.limit)
+print(c.limit)  # 100
 c.limit = 1000
-print(c.limit)
+print(c.limit)  # 1000
 c.limit = 0
+print(c.limit)  # 1000
 </code>