Minor fixes

Wisconsin_breast_cancer_data.ipynb

@@ -8,7 +8,7 @@
     }
    },
    "source": [
-    "# Python for data analysis"
+    " # Python for data analysis"
    ]
   },
   {
@@ -600,6 +600,15 @@
     "b = \"This is also a string\""
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "len(a)"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": null,
@@ -765,7 +774,7 @@
    },
    "outputs": [],
    "source": [
-    "# mydict['fly'] = 'arthropod'"
+    "mydict['fly'] = 'arthropod'"
    ]
   },
   {
@@ -911,12 +920,26 @@
     "    print(ii) "
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "slideshow": {
+     "slide_type": "subslide"
+    }
+   },
+   "outputs": [],
+   "source": [
+    "for a in range(5):\n",
+    "    print(a)"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {
     "colab_type": "text",
     "slideshow": {
-     "slide_type": "fragment"
+     "slide_type": "subslide"
     }
    },
    "source": [
@@ -1457,7 +1480,7 @@
    "outputs": [],
    "source": [
     "a2 = np.arange(2.0, 7.0, 1.5)\n",
-    "# array of numbers starting with 3.0, at increments of 2.0, less than 8.0"
+    "# array of numbers starting with 2.0, at increments of 1.5, less than 7.0"
    ]
   },
   {
@@ -2430,13 +2453,6 @@
     " This is called a stack trace - when one function calls another function, which calls another function, etc., and an inner funtion encounters an error, it shows the outer most function first, and then goes deeper and deeper until the source of the error."
    ]
   },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": []
-  },
   {
    "cell_type": "code",
    "execution_count": null,
@@ -3526,7 +3542,7 @@
     }
    },
    "source": [
-    "- Ask stackoverflow"
+    "- Ask *stackoverflow*"
    ]
   },
   {