diff --git a/examples/03_multipart/config/config.json b/examples/03_multipart/config/config.json
index 0063dd4..26ff342 100644
--- a/examples/03_multipart/config/config.json
+++ b/examples/03_multipart/config/config.json
@@ -3,16 +3,16 @@
     // Each part will appear as a different submission box.
     "part_names" : [ "Part 1", "Part 2", "Part 3" ],
 
-    // Submissions for each part are just placed in the part1, part2, etc. 
-    // directories. From there, they can be graded in the same manner as any 
+    // Submissions for each part are just placed in the part1, part2, etc.
+    // directories. From there, they can be graded in the same manner as any
     // other submission.
     "testcases" : [
         {
             "title" : "Part 1 Compute square root",
-            "command" : "python part1/*.py",
+            "command" : "python3 part1/*.py",
             "points" : 3,
             "validation" : [
-                { 
+                {
                     "method" : "diff",
                     "actual_file" : "STDOUT.txt",
                     "description" : "Program Output",
@@ -21,11 +21,11 @@
             ]
         },
         {
-            "title" : "Part 2 Solve for x^2 + 5x + 6 = 0", 
-            "command" : "python part2/*.py",
+            "title" : "Part 2 Solve for x^2 + 5x + 6 = 0",
+            "command" : "python3 part2/*.py",
             "points" : 4,
             "validation" : [
-                { 
+                {
                     "method" : "diff",
                     "actual_file" : "STDOUT.txt",
                     "description" : "Program Output",
@@ -35,10 +35,10 @@
         },
         {
             "title" : "Part 3 Count from 1 to 10",
-            "command" : "python part3/*.py",
+            "command" : "python3 part3/*.py",
             "points" : 3,
             "validation" : [
-                { 
+                {
                     "method" : "diff",
                     "actual_file" : "STDOUT.txt",
                     "description" : "Program Output",
diff --git a/examples/03_multipart/submissions/part1.py b/examples/03_multipart/submissions/part1.py
index 6cb088f..f5b3776 100644
--- a/examples/03_multipart/submissions/part1.py
+++ b/examples/03_multipart/submissions/part1.py
@@ -1,3 +1,3 @@
 import math
-print "The square root of 16:", math.sqrt(16)
-print "The square root of 9:", math.sqrt(9)
\ No newline at end of file
+print("The square root of 16:", math.sqrt(16))
+print("The square root of 9:", math.sqrt(9))
diff --git a/examples/03_multipart/submissions/part1_syntax_error1.py b/examples/03_multipart/submissions/part1_syntax_error1.py
index abefc78..fc2b12c 100644
--- a/examples/03_multipart/submissions/part1_syntax_error1.py
+++ b/examples/03_multipart/submissions/part1_syntax_error1.py
@@ -1,2 +1,2 @@
-print "The square root of 16:", math.sqrt(16)
-print "The square root of 9:", math.sqrt(9)
\ No newline at end of file
+print("The square root of 16:", math.sqrt(16))
+print("The square root of 9:", math.sqrt(9))
diff --git a/examples/03_multipart/submissions/part1_syntax_error2.py b/examples/03_multipart/submissions/part1_syntax_error2.py
index a6ad3d9..57cb060 100644
--- a/examples/03_multipart/submissions/part1_syntax_error2.py
+++ b/examples/03_multipart/submissions/part1_syntax_error2.py
@@ -1,2 +1,2 @@
-print "The square root of 16:", 16^(0.5)
-print "The square root of 9:", 9^(0.5)
\ No newline at end of file
+print("The square root of 16:", 16^(0.5))
+print("The square root of 9:", 9^(0.5))
diff --git a/examples/03_multipart/submissions/part1_wrong_output.py b/examples/03_multipart/submissions/part1_wrong_output.py
index 715cf82..27f5f61 100644
--- a/examples/03_multipart/submissions/part1_wrong_output.py
+++ b/examples/03_multipart/submissions/part1_wrong_output.py
@@ -1,5 +1,5 @@
 import math
-print "The square root of 16:"
-print math.sqrt(16)
-print "The square root of 9:"
-print math.sqrt(9)
\ No newline at end of file
+print("The square root of 16:")
+print(math.sqrt(16))
+print("The square root of 9:")
+print(math.sqrt(9))
diff --git a/examples/03_multipart/submissions/part2.py b/examples/03_multipart/submissions/part2.py
index 01370ac..3e0a599 100644
--- a/examples/03_multipart/submissions/part2.py
+++ b/examples/03_multipart/submissions/part2.py
@@ -6,6 +6,6 @@
 x1 = ((-1)*b + math.sqrt(b*b - 4*a*c))/(2*a)
 x2 = ((-1)*b - math.sqrt(b*b - 4*a*c))/(2*a)
 
-print "Solution to equation x^2 + 5x + 6 = 0:"
-print "x1 =", x1
-print "x2 =", x2
\ No newline at end of file
+print("Solution to equation x^2 + 5x + 6 = 0:")
+print("x1 =", x1)
+print("x2 =", x2)
diff --git a/examples/03_multipart/submissions/part2_syntax_error1.py b/examples/03_multipart/submissions/part2_syntax_error1.py
index 246dc2d..2f1cc5a 100644
--- a/examples/03_multipart/submissions/part2_syntax_error1.py
+++ b/examples/03_multipart/submissions/part2_syntax_error1.py
@@ -6,6 +6,6 @@
 x1 = ((-1)*b + math.sqrt(b*b - 4*a*c))/(2*a)
 x2 = ((-1)*b - math.sqrt(b*b - 4*a*c))/(2*a)
 
-print "Solution to equation x^2 + 5x + 6 = 0:"
-print "x1 =" + x1
-print "x2 =" + x2
\ No newline at end of file
+print("Solution to equation x^2 + 5x + 6 = 0:")
+print("x1 =" + x1)
+print("x2 =" + x2)
diff --git a/examples/03_multipart/submissions/part2_wrong_output.py b/examples/03_multipart/submissions/part2_wrong_output.py
index c01ccdf..164b91c 100644
--- a/examples/03_multipart/submissions/part2_wrong_output.py
+++ b/examples/03_multipart/submissions/part2_wrong_output.py
@@ -6,6 +6,6 @@
 x1 = ((-1)*b + math.sqrt(b*b - 4*a*c))/(2*a)
 x2 = ((-1)*b - math.sqrt(b*b - 4*a*c))/(2*a)
 
-print "Solution to equation x^2 + 5x + 6 = 0:"
-print "x1 = ", x1
-print "x2 = ", x2
\ No newline at end of file
+print("Solution to equation x^2 + 5x + 6 = 0:")
+print("x1 = ", x1)
+print("x2 = ", x2)
diff --git a/examples/03_multipart/submissions/part3.py b/examples/03_multipart/submissions/part3.py
index 5c76402..7785751 100644
--- a/examples/03_multipart/submissions/part3.py
+++ b/examples/03_multipart/submissions/part3.py
@@ -1,2 +1 @@
-for i in range(1,11):
-	print i,
\ No newline at end of file
+print(" ".join([str(x) for x in range(1, 11)]))
diff --git a/examples/03_multipart/submissions/part3_syntax_error1.py b/examples/03_multipart/submissions/part3_syntax_error1.py
index ccf9402..a48f24d 100644
--- a/examples/03_multipart/submissions/part3_syntax_error1.py
+++ b/examples/03_multipart/submissions/part3_syntax_error1.py
@@ -1,2 +1,2 @@
 for (i in range(1,11)):
-	print i,
\ No newline at end of file
+	print(i,)
diff --git a/examples/03_multipart/submissions/part3_wrong_output.py b/examples/03_multipart/submissions/part3_wrong_output.py
index 14d90f3..93bb199 100644
--- a/examples/03_multipart/submissions/part3_wrong_output.py
+++ b/examples/03_multipart/submissions/part3_wrong_output.py
@@ -1,2 +1,2 @@
 for i in range(1,10):
-	print i,
\ No newline at end of file
+	print(i,)