Welcome to Colaboratory!

Colaboratory is a free Jupyter notebook environment that requires no setup and runs entirely in the cloud. See our FAQ for more info.



In [0]:

    
import IPython
js_code = '''
document.querySelector("#output-area").appendChild(document.createTextNode("hello world!"));
'''
display(IPython.display.Javascript(js_code))

Getting Started

Highlighted Features

Seedbank

Looking for Colab notebooks to learn from? Check out Seedbank, a place to discover interactive machine learning examples.

TensorFlow execution

Colaboratory allows you to execute TensorFlow code in your browser with a single click. The example below adds two matrices.

$\begin{bmatrix}

& 1. & 1. \
& 1. & 1. \ \end{bmatrix} + \begin{bmatrix}
& 2. & 3. \
& 5. & 6. \ \end{bmatrix} = \begin{bmatrix}
& 3. & 4. \
& 6. & 7. \ \end{bmatrix}$



In [0]:

    
import tensorflow as tf

input1 = tf.ones((2, 3))
input2 = tf.reshape(tf.range(1, 7, dtype=tf.float32), (2, 3))
output = input1 + input2

with tf.Session():
  result = output.eval()
result









    Out[0]:





array([[2., 3., 4.],
       [5., 6., 7.]], dtype=float32)

GitHub

You can save a copy of your Colab notebook to Github by using File > Save a copy to GitHub…

You can load any .ipynb on GitHub by just adding the path to colab.research.google.com/github/ . For example, will load this .ipynb on GitHub.

Visualization

Colaboratory includes widely used libraries like matplotlib, simplifying visualization.



In [0]:

    
import matplotlib.pyplot as plt
import numpy as np

x = np.arange(20)
y = [x_i + np.random.randn(1) for x_i in x]
a, b = np.polyfit(x, y, 1)
_ = plt.plot(x, y, 'o', np.arange(20), a*np.arange(20)+b, '-')

Want to use a new library? pip install it at the top of the notebook. Then that library can be used anywhere else in the notebook. For recipes to import commonly used libraries, refer to the importing libraries example notebook.



In [0]:

    
!pip install -q matplotlib-venn

from matplotlib_venn import venn2
_ = venn2(subsets = (3, 2, 1))

Forms

Forms can be used to parameterize code. See the forms example notebook for more details.



In [0]:

    
#@title Examples

text = 'value' #@param 
date_input = '2018-03-22' #@param {type:"date"}
number_slider = 0 #@param {type:"slider", min:-1, max:1, step:0.1}
dropdown = '1st option' #@param ["1st option", "2nd option", "3rd option"]

Local runtime support

Colab supports connecting to a Jupyter runtime on your local machine. For more information, see our documentation.