implement_stack_python

Author: AnushreeBagchi

implement_stack_python.py

@@ -0,0 +1,33 @@
+# implement_stack_python
+
+class Stack:
+    def __init__(self):
+        self.items = []
+    def push(self, value):
+        self.items.append(value)
+    def size(self):
+        return len(self.items)
+    def is_empty(self):
+        return len(this.items) == 0
+    def pop(self):
+        if len(self.items) == 0:
+            return None
+        return self.items.pop()
+
+
+MyStack = Stack()
+
+MyStack.push("Web Page 1")
+MyStack.push("Web Page 2")
+MyStack.push("Web Page 3")
+
+print (MyStack.items)
+
+MyStack.pop()
+MyStack.pop()
+
+print ("Pass" if (MyStack.items[0] == 'Web Page 1') else "Fail")
+
+MyStack.pop()
+
+print ("Pass" if (MyStack.pop() == None) else "Fail")