

In [2]:

    
%matplotlib inline
%config InlineBackend.figure_format='retina'



In [3]:

    
# Add this to python2 code to make life easier
from __future__ import absolute_import, division, print_function



In [4]:

    
from itertools import combinations
import string

from IPython.display import IFrame, HTML, YouTubeVideo
import matplotlib as mpl
from matplotlib import pyplot as plt
from matplotlib.pyplot import GridSpec
import seaborn as sns


import numpy as np
# don't do:
# from numpy import *



In [5]:

    
import pandas as pd
import os, sys
import warnings

sns.set();
plt.rcParams['figure.figsize'] = (12, 8)
sns.set_style("darkgrid")
sns.set_context("poster", font_scale=1.3)

warnings.filterwarnings('ignore')

Keyboard shortcuts

For help, ESC + h



In [17]:

    
# in select mode, shift j/k (to select multiple cells at once)
# split cell with ctrl shift -
# merge with shift M



In [18]:

    
first = 1



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second = 2



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third = 3

Different heading levels

With text and $\LaTeX$ support.

You can also get monospaced fonts by indenting 4 spaces:

mkdir toc
cd toc

Wrap with triple-backticks and language:

mkdir toc
cd toc
wget https://repo.continuum.io/miniconda/Miniconda3-latest-MacOSX-x86_64.sh



In [22]:

    
import numpy as np



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np.random.choice()

SELECT first_name,
       last_name,
       year_of_birth
FROM presidents
WHERE year_of_birth > 1800;



In [24]:

    
mylist = !ls



In [27]:

    
[x.split('_')[-1] for x in mylist]









    Out[27]:





['410', '410', '431']



In [29]:

    
%%bash
pwd 
for i in *.ipynb
do
    echo $i | awk -F . '{print $1}'
done

echo
echo "break"
echo

for i in *.ipynb
do
    echo $i | awk -F - '{print $2}'
done









    



/home/nbuser
*

break

Tab; shift-tab; shift-tab-tab; shift-tab-tab-tab-tab; and more!



In [10]:

    
def silly_function(xval):
    """Takes a value and returns the absolute value."""
    xval_sq = xval ** 2.0
    1 + 4
    xval_abs = np.sqrt(xval_sq)
    return xval_abs



In [11]:

    
silly_function?



In [12]:

    
silly_function??



In [ ]:

    
silly_function()



In [ ]:

    
import numpy as np



In [9]:

    
# 
np.linspace??



In [8]:

    
# 
np.linspace?



In [40]:

    
ex_dict = {}



In [41]:

    
# Indent/dedent/comment
for _ in range(5):
    ex_dict["one"] = 1
    ex_dict["two"] = 2
    ex_dict["three"] = 3
    ex_dict["four"] = 4



In [42]:

    
ex_dict









    Out[42]:





{'four': 4, 'one': 1, 'three': 3, 'two': 2}

Multicursor magic



In [44]:

    
ex_dict["one_better_name"] = 1.
ex_dict["two_better_name"] = 2.  
ex_dict["three_better_name"] = 3.
ex_dict["four_better_name"] = 4.



In [ ]: