Add exercises for std lib notebooks

notebooks/beginner/exercises/std_lib1_exercise.ipynb

@@ -0,0 +1,117 @@
+{
+ "cells": [
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# pytz will be needed in the exercise\n",
+    "import sys\n",
+    "!{sys.executable} -m pip install pytz"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# 1. Playing with datetimes\n",
+    "You're given a naive datetime, see `NAIVE_DT` variable below. Although this variable is naive, you happen to know that the time specified by `NAIVE_DT` is in UTC.\n",
+    "\n",
+    "Based on this information, your task is to create new datetime variables by converting `NAIVE_DT` to UTC and then to time in Sydney and Los Angeles. Use the following variable names: `utc_dt`, `sydney_dt`, and `la_dt`. "
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "editable": false
+   },
+   "outputs": [],
+   "source": [
+    "import datetime as dt\n",
+    "import pytz\n",
+    "\n",
+    "NAIVE_DT = dt.datetime(2000, 1, 1, 10)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "If you don't know the timezone name you're looking for, this may be helpful:"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "editable": false
+   },
+   "outputs": [],
+   "source": [
+    "for tz in pytz.all_timezones:\n",
+    "    print(tz)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "Now create `utc_dt`, `sydney_dt`, and `la_dt`."
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# Your implementation here"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "Let's verify that the solution is correct."
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "editable": false
+   },
+   "outputs": [],
+   "source": [
+    "assert utc_dt.isoformat() == '2000-01-01T10:00:00+00:00'\n",
+    "assert sydney_dt.isoformat() == '2000-01-01T21:00:00+11:00'\n",
+    "assert la_dt.isoformat() == '2000-01-01T02:00:00-08:00'\n",
+    "\n",
+    "print('All good!')"
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.5.4"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 2
+}