Create __getitem__.py

Author: keshavsingh4522

OOPS/__getitem__.py

@@ -0,0 +1,42 @@
+class A:
+ def __init__(self):
+  self.l=[1,2,3,4,5,6,7,8,9]
+ def __getitem__(self,i):
+  if isinstance(i,int):
+    return self.l[i]
+  else:
+   print(i.start,i.stop,i.step)
+   return self.l[i]
+a=A()
+#for i in a.l:
+# print(i,end='\t')
+print(a[4])
+
+print(a[:])
+print(a[2:])
+print(a[:5])
+print(a[3:8])
+print(a[::2])
+print(a[:4:3])
+print(a[4::3])
+print(a[2:9:2])
+'''
+output:
+5
+None None None
+[1, 2, 3, 4, 5, 6, 7, 8, 9]
+2 None None
+[3, 4, 5, 6, 7, 8, 9]
+None 5 None
+[1, 2, 3, 4, 5]
+3 8 None
+[4, 5, 6, 7, 8]
+None None 2
+[1, 3, 5, 7, 9]
+None 4 3
+[1, 4]
+4 None 3
+[5, 8]
+2 9 2
+[3, 5, 7, 9]
+'''