completed numpy and pandas notebooks

Author: GokuMohandas

notebooks/02_NumPy.ipynb

@@ -900,7 +900,7 @@
         "colab_type": "text"
       },
       "source": [
-        "### Pitfalls of careless reshaping"
+        "### Unintended reshaping"
       ]
     },
     {
@@ -950,7 +950,6 @@
         }
       },
       "source": [
-        "# Pitfalls of careless reshaping\n",
         "x = np.array([[[1, 1, 1, 1], [2, 2, 2, 2], [3, 3, 3, 3]],\n",
         "              [[10, 10, 10, 10], [20, 20, 20, 20], [30, 30, 30, 30]]])\n",
         "print (\"x:\\n\", x)\n",
@@ -999,6 +998,7 @@
         }
       },
       "source": [
+        "# Unintended reshaping\n",
         "z_incorrect = np.reshape(x, (x.shape[1], -1))\n",
         "print (\"z_incorrect:\\n\", z_incorrect)\n",
         "print (\"z_incorrect.shape: \", z_incorrect.shape)"
@@ -1042,6 +1042,7 @@
         }
       },
       "source": [
+        "# Intended reshaping\n",
         "y = np.transpose(x, (1,0,2))\n",
         "print (\"y:\\n\", y)\n",
         "print (\"y.shape: \", y.shape)\n",