added labels to plot (else ax.legend() would have no effect)

Author: krasoa

03-2020-11-20/notebooks/03-02-Plotting_with_Python.ipynb

@@ -279,8 +279,8 @@
    "outputs": [],
    "source": [
     "fig, ax = plt.subplots()\n",
-    "ax.plot(X, C, color=\"green\")\n",
-    "ax.plot(X, S, linestyle=\"--\", linewidth=3.5)"
+    "ax.plot(X, C, color=\"green\", label='cosine')\n",
+    "ax.plot(X, S, linestyle=\"--\", linewidth=3.5, label='sine')"
    ]
   },
   {
@@ -516,7 +516,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.7.3"
+   "version": "3.8.6"
   },
   "livereveal": {
    "scroll": true,