In [1]:

    

# code cell
name = "Jonathan"


    

In [2]:

    

# code cell
name = "Jonathan"


    

In [3]:

    

# code cell
name = "Jonathan"


    

In [4]:

    

# Add this to python2 code to make life easier -- safe to use in python3 as well.
from __future__ import absolute_import, division, print_function


    

In [5]:

    

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


    

In [6]:

    

max('a')


    

In [7]:

    

np.max('a')


    

In [8]:

    

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


    

In [9]:

    

import pandas as pd
import matplotlib.pyplot as plt
import seaborn as sns
import os
from sklearn.datasets import load_boston
from pivottablejs import pivot_ui
import qgrid
import sys
import warnings
warnings.filterwarnings('ignore')


    

In [10]:

    

df = pd.read_csv("../data/mps.csv", encoding="ISO-8859-1")


    

In [11]:

    

# recommend using .head()
df.head(10)


    

In [12]:

    

# Province, Party, Average, Age, Heatmap


    

In [13]:

    

pivot_ui(df)


    

In [14]:

    

df_dict = load_boston()
features = pd.DataFrame(data=df_dict.data, columns = df_dict.feature_names)
target = pd.DataFrame(data=df_dict.target, columns = ['MEDV'])
df = pd.concat([features, target], axis=1)


    

In [15]:

    

df['Zone'] = df['ZN'].astype('category')
df['CHAS'] = df['CHAS'].astype('category')
df.head()


    

In [16]:

    

qgrid_widget = qgrid.show_grid(df[['CRIM',
                                   'Zone',
                                   'INDUS',
                                   'CHAS',
                                   'NOX',
                                   'AGE',
                                   'RAD',
                                   'LSTAT',
                                   'MEDV',
                                  ]], show_toolbar=True)


    

In [17]:

    

qgrid_widget


    

In [18]:

    

df2 = qgrid_widget.get_changed_df()


    

In [19]:

    

df2.head(7)


    

In [20]:

    

df.head(7)


    

In [21]:

    

import numpy as np


    

In [22]:

    

# shift-tab right ↓ more useful
np.linspace(start=50, endpoint=False, endpoint=100)


    

In [23]:

    

# shift-tab right ↓ more useful
np.linspace(start=50, endpoint=False, stop=100)


    

In [24]:

    

np.linspace?


    

In [25]:

    

?np.linspace


    

In [26]:

    

np.linspace??


    

In [27]:

    

!subl ~/miniconda3/envs/dspy3/lib/python3.6/site-packages/numpy/core/function_base.py


    

In [28]:

    

import textwrap
def example_function():
    """Docstring for example function"""
    
    print(textwrap.dedent("""
    This is a multi-lined string
    that I want to write inside of a function.
    Notice what happens when I print this.
        And when something is indented more."""))


example_function()


    

In [29]:

    

# But first find and replace
def silly_function(xval):
    """Takes a value and returns the value."""
    xval_sq = xval ** 2.0
    1 + 12
    xval_abs = np.sqrt(xval_sq)
    return xval_abs


    

In [30]:

    

silly_function?


    

In [31]:

    

silly_function??


    

In [32]:

    

silly_function??


    

In [33]:

    

# But first find and replace
def silly_function(xval):
    """Takes a value and returns the value."""
    xval_sq = xval ** 2.0
    1 + 10
    xval_abs = np.sqrt(xval_sq)
    return xval_abs


    

In [34]:

    

silly_function??


    

In [35]:

    

import textwrap
def example_function():
    """Docstring for example function"""
    
    print(textwrap.dedent("""
    This is a multi-lined string
    that I want to write inside of a function.
    Notice what happens when I print this.
        And when something is indented more."""))


example_function()


    

In [36]:

    

!ls ../data/


    

In [37]:

    

coal_years = !ls ../data/coal_prod_20*.csv


    

In [38]:

    

coal_years


    

In [39]:

    

example_dict = {}

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


    

In [40]:

    

example_dict["prepend_one_better_neat"] = 1
example_dict["prepend_two_better_neat"] = 2
example_dict["prepend_three_better_neat"] = 3
example_dict["prepend_four_better_neat"] = 4


    

In [41]:

    

example_dict["one_better_neat"] = 1
example_dict["two_better_neat"] = 2
example_dict["three_better_neat"] = 3
example_dict["four_better_neat"] = 4


    

In [42]:

    

%%latex

If you want to get crazier$\ldots$

\begin{equation}
\oint_S {E_n dA = \frac{1}{{\varepsilon _0 }}} Q_\textrm{inside}
\end{equation}


    

In [43]:

    

%%bash
wget http://www.ast.cam.ac.uk/~rfc/vpfit11.1.tar.gz
mkdir -p vpfit11
cd vpfit11
tar -xvzf ../vpfit11.1.tar.gz


    

In [44]:

    

normal_argument = 12.4
second_argument = 98.4

arg_with_spaces = "the secret to life"


    

In [45]:

    

%%bash -s {normal_argument} {second_argument}
echo "This script knows the value of the argument: $1"
echo "It also has no trouble with the second argument: $2"


    

In [46]:

    

%%bash -s "$arg_with_spaces"
echo "This bash script knows $1."


    

In [47]:

    

ls


    

In [48]:

    

!ls


    

In [49]:

    

%ls


    

In [50]:

    

tailthing = "*.ipynb"


    

In [51]:

    

!ls {tailthing}


    

In [52]:

    

output = !ls


    

In [53]:

    

output


    

In [54]:

    

%env


    

In [55]:

    

!pwd


    

In [56]:

    

a = 3
a


    

In [57]:

    

_i56


    

In [58]:

    

_56


    

In [59]:

    

_


    

In [60]:

    

b = 5
b * 15


    

In [61]:

    

_


    

In [62]:

    

c = a * b


    

In [63]:

    

%notebook history.ipynb


    

In [64]:

    

!subl 01-Tips-and-tricks.ipynb