diff --git a/cse16225_ex1_1.py b/cse16249_ex1_1.py
similarity index 100%
rename from cse16225_ex1_1.py
rename to cse16249_ex1_1.py
diff --git a/cse16225_ex1_2.py b/cse16249_ex1_2.py
similarity index 100%
rename from cse16225_ex1_2.py
rename to cse16249_ex1_2.py
diff --git a/cse16225_ex1_3.py b/cse16249_ex1_3.py
similarity index 100%
rename from cse16225_ex1_3.py
rename to cse16249_ex1_3.py
diff --git a/cse16225_ex1_4.py b/cse16249_ex1_4.py
similarity index 100%
rename from cse16225_ex1_4.py
rename to cse16249_ex1_4.py
diff --git a/cse16225_ex1_5.py b/cse16249_ex1_5.py
similarity index 100%
rename from cse16225_ex1_5.py
rename to cse16249_ex1_5.py
diff --git a/cse16225_ex2_1.py b/cse16249_ex2_1.py
similarity index 100%
rename from cse16225_ex2_1.py
rename to cse16249_ex2_1.py
diff --git a/cse16225_ex2_10.py b/cse16249_ex2_10.py
similarity index 100%
rename from cse16225_ex2_10.py
rename to cse16249_ex2_10.py
diff --git a/cse16225_ex2_2.py b/cse16249_ex2_2.py
similarity index 100%
rename from cse16225_ex2_2.py
rename to cse16249_ex2_2.py
diff --git a/cse16225_ex2_3.py b/cse16249_ex2_3.py
similarity index 100%
rename from cse16225_ex2_3.py
rename to cse16249_ex2_3.py
diff --git a/cse16225_ex2_4.py b/cse16249_ex2_4.py
similarity index 100%
rename from cse16225_ex2_4.py
rename to cse16249_ex2_4.py
diff --git a/cse16225_ex2_5.py b/cse16249_ex2_5.py
similarity index 100%
rename from cse16225_ex2_5.py
rename to cse16249_ex2_5.py
diff --git a/cse16225_ex2_6.py b/cse16249_ex2_6.py
similarity index 100%
rename from cse16225_ex2_6.py
rename to cse16249_ex2_6.py
diff --git a/cse16225_ex2_7.py b/cse16249_ex2_7.py
similarity index 70%
rename from cse16225_ex2_7.py
rename to cse16249_ex2_7.py
index 00459b2159e4556434edfe8d3d276d0e5abff452..01ee175351917ad33671b9baf6d3a142cdeeb740 100644
--- a/cse16225_ex2_7.py
+++ b/cse16249_ex2_7.py
@@ -1,3 +1,3 @@
-str = "Ram"
+str = "SreeRam"
 print(str.upper())
 print(str.lower())
diff --git a/cse16225_ex2_8.py b/cse16249_ex2_8.py
similarity index 100%
rename from cse16225_ex2_8.py
rename to cse16249_ex2_8.py
diff --git a/cse16225_ex2_9.py b/cse16249_ex2_9.py
similarity index 100%
rename from cse16225_ex2_9.py
rename to cse16249_ex2_9.py