fixed python2 bugs

01-Python_Introduction/Python_Crash_Course.ipynb

@@ -85,7 +85,6 @@
     "# Plots now appear in the notebook.\n",
     "%matplotlib inline                       \n",
     "\n",
-    "from __future__ import print_function, division    # Python 2 and 3 are now very similar\n",
     "import matplotlib.pyplot as plt\n",
     "plt.style.use('ggplot')                            # Matplotlib style sheet - nicer plots!\n",
     "plt.rcParams['figure.figsize'] = 12, 8             # Slightly bigger plots by default"
@@ -587,7 +586,7 @@
     "import numpy as np\n",
     "\n",
     "# Create a large array with with 1 million samples.\n",
-    "x = np.linspace(start=0, stop=100, num=1E6, dtype=np.float64)\n",
+    "x = np.linspace(start=0, stop=100, num=int(1E6), dtype=np.float64)\n",
     "\n",
     "# Most operations work per-element.\n",
     "y = x ** 2\n",
@@ -769,4 +768,4 @@
  },
  "nbformat": 4,
  "nbformat_minor": 0
-}
+}