diff --git a/Python/next_number.py b/Python/next_number.py
new file mode 100644
index 0000000..f4271fe
--- /dev/null
+++ b/Python/next_number.py
@@ -0,0 +1,20 @@
+x,li,small,maxx,c = input(),list(),0,0,1
+for i in range(len(x)):
+               li.append(int(x[i]))
+for i in range(len(li)-1,-1,-1):
+    if(i==0):
+        print("No Number Possible")
+        c=0
+        break
+    if(li[i]>li[i-1]):
+        small = i-1
+        maxx = i
+        break
+for i in range(small+1,len(li)):
+    if(li[i]>li[small] and li[i]<li[maxx]):
+        maxx = i
+li[small],li[maxx]=li[maxx],li[small]
+li = li[:small+1] + sorted(li[small+1:])
+if(c):
+    for i in range(len(li)):
+        print(li[i],end = '' )