diff --git a/Ak.py b/Ak.py
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--- /dev/null
+++ b/Ak.py
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+values= = input("enter a number:")6
+list = values.split(",")
+tuple = tuple(list)
+print('list :'.list)
+print('tuple :',tuple)
diff --git a/readme.md b/readme.md
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+++ b/readme.md
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+# Python3 Program to print BFS traversal
+# from a given source vertex. BFS(int s)
+# traverses vertices reachable from s.
+from collections import defaultdict
+
+# This class represents a directed graph
+# using adjacency list representation
+class Graph:
+
+	# Constructor
+	def __init__(self):
+
+		# default dictionary to store graph
+		self.graph = defaultdict(list)
+
+	# function to add an edge to graph
+	def addEdge(self,u,v):
+		self.graph[u].append(v)
+
+	# Function to print a BFS of graph
+	def BFS(self, s):
+
+		# Mark all the vertices as not visited
+		visited = [False] * (len(self.graph))
+
+		# Create a queue for BFS
+		queue = []
+
+		# Mark the source node as
+		# visited and enqueue it
+		queue.append(s)
+		visited[s] = True
+
+		while queue:
+
+			# Dequeue a vertex from
+			# queue and print it
+			s = queue.pop(0)
+			print (s, end = " ")
+
+			# Get all adjacent vertices of the
+			# dequeued vertex s. If a adjacent
+			# has not been visited, then mark it
+			# visited and enqueue it
+			for i in self.graph[s]:
+				if visited[i] == False:
+					queue.append(i)
+					visited[i] = True
+
+# Driver code
+
+# Create a graph given in
+# the above diagram
+g = Graph()
+g.addEdge(0, 1)
+g.addEdge(0, 2)
+g.addEdge(1, 2)
+g.addEdge(2, 0)
+g.addEdge(2, 3)
+g.addEdge(3, 3)
+
+print ("Following is Breadth First Traversal"
+				" (starting from vertex 2)")
+g.BFS(2)
+
+# This code is contributed by Neelam Yadav