Create __contains__.py

Author: keshavsingh3197

OOPS/mazic_method/__contains__.py

@@ -0,0 +1,14 @@
+
+class Indexer:
+ def __init__(self):
+  self.l=[1,2,3,4,5,6,7,8,9]
+ def __contains__(self,c):
+  return c in self.l
+c1=Indexer()
+n=int(input('enter a number : '))
+print(n in c1)
+'''
+output:
+enter a number : 2
+True
+'''