Added Dequeue in Python

data_structures/LinkedList/singly_LinkedList.py

@@ -0,0 +1,50 @@
+class Node:#create a Node
+    def __int__(self,data):
+        self.data=data#given data
+        self.next=None#given next to None
+class Linked_List:
+    
+    pass
+    
+    def insert_tail(Head,data):
+        if(Head.next is None):
+            Head.next = Node(data)
+        else:
+            insert_tail(Head.next, data)
+
+    def insert_head(Head,data):
+        tamp = Head
+        if (tamp == None):
+            newNod = Node()#create a new Node
+            newNod.data = data
+            newNod.next = None
+            Head = newNod#make new node to Head       
+        else:
+            newNod = Node()
+            newNod.data = data
+            newNod.next = Head#put the Head at NewNode Next
+            Head=newNod#make a NewNode to Head
+        return Head   
+    
+    def printList(Head):#print every node data
+        tamp=Head
+        while tamp!=None:
+            print(tamp.data)
+            tamp=tamp.next
+    
+    def delete_head(Head):#delete from head
+        if Head!=None:
+            Head=Head.next
+        return Head#return new Head
+    
+    def delete_tail(Head):#delete from tail
+        if Head!=None:
+            tamp = Node()
+            tamp = Head
+            while (tamp.next).next!= None:#find the 2nd last element
+                tamp = tamp.next
+            tamp.next=None#delete the last element by give next None to 2nd last Element
+        return Head
+
+    def isEmpty(Head):
+        return Head is None #Return if Head is none