💻 Update Practice examples

Author: creativepurus

0. Python Files/20. 2D List.py

@@ -0,0 +1,19 @@
+matrix = [
+    [1,2,3],
+    [4,5,6],
+    [7,8,9]
+]
+
+# print(matrix[0][1])
+
+# matrix[0][1] = 100
+# print(matrix[0][1])
+
+for row in matrix:
+    print(row)
+
+print()
+
+for row in matrix:
+    for element in row:
+        print(element)