In [1]:
import random
the_number = random.randint(0, 10)
guess = -1
name = input('Player what is your name? ')
while guess != the_number:
guess_text = input('Guess a number between 0 and 10: ')
guess = int(guess_text)
if guess < the_number:
print(f'Sorry {name}, your guess of {guess} was too LOW.\n')
elif guess > the_number:
print(f'Sorry {name}, your guess of {guess} was too HIGH.\n')
else:
print(f'Excellent work {name}, you won, it was {guess}!\n')
print('Done')
In [2]:
def generate_fibonacci_list(limit, output=False):
nums = []
current, ne_xt = 0, 1
while current < limit:
current, ne_xt = ne_xt, ne_xt + current
nums.append(current)
if output == True:
print(f'{len(nums[:-1])} Fibonacci numbers below the number '
f'{limit} are:\n{nums[:-1]}')
return nums[:-1]
limit = 1000
fib = generate_fibonacci_list(limit, True)
In [3]:
%matplotlib inline
import matplotlib.pyplot as plt
from ipywidgets import *
limit = 1000000
fib = generate_fibonacci_list(limit)
plt.plot(fib)
plt.plot(range(len(fib)), fib, 'ro')
plt.show()
In [ ]:
%matplotlib inline
import matplotlib.pyplot as plt
from ipywidgets import *
def update(limit, print_output):
i = generate_fibonacci_list(limit, print_output)
plt.plot(range(len(i)), i)
plt.plot(range(len(i)), i, 'ro')
plt.show()
limit=widgets.IntSlider(min=10,max=1000000,step=1,value=10)
interact(update, limit=limit, print_output=False);
In [ ]:
from IPython.core.debugger import set_trace
def debug_fibonacci_list(limit):
nums = []
current, ne_xt = 0, 1
while current < limit:
if current > 1000:
set_trace()
current, ne_xt = ne_xt, ne_xt + current
nums.append(current)
print(f'The fibonacci numbers below the number {limit} are:\n{nums[:-1]}')
debug_fibonacci_list(10000)
In [4]:
from IPython.display import SVG
SVG(filename='images/python.svg')
Out[4]:
In [5]:
import numpy as np
from IPython.display import Audio
framerate = 44100
t = np.linspace(0,5,framerate*5)
data = np.sin(2*np.pi*220*t**2)
Audio(data,rate=framerate)
Out[5]:
In [6]:
from IPython.display import YouTubeVideo
YouTubeVideo('K5okTyjKr5U')
Out[6]:
Video Link with image display
In [7]:
from IPython.display import IFrame
IFrame('https://pynq.readthedocs.io/en/latest/getting_started.html',
width='100%', height=500)
Out[7]:
In [8]:
%%latex
\begin{align} P(Y=i|x, W,b) = softmax_i(W x + b)= \frac {e^{W_i x + b_i}}
{\sum_j e^{W_j x + b_j}}\end{align}
In [9]:
from IPython.display import IFrame
IFrame('https://matplotlib.org/gallery/index.html', width='100%', height=500)
Out[9]:
Below we run the code available under examples --> Matplotlib API --> Radar_chart in the above webpage
Link to Radar chart
In [10]:
import numpy as np
import matplotlib.pyplot as plt
from matplotlib.path import Path
from matplotlib.spines import Spine
from matplotlib.projections.polar import PolarAxes
from matplotlib.projections import register_projection
def radar_factory(num_vars, frame='circle'):
"""Create a radar chart with `num_vars` axes.
This function creates a RadarAxes projection and registers it.
Parameters
----------
num_vars : int
Number of variables for radar chart.
frame : {'circle' | 'polygon'}
Shape of frame surrounding axes.
"""
# calculate evenly-spaced axis angles
theta = np.linspace(0, 2*np.pi, num_vars, endpoint=False)
def draw_poly_patch(self):
# rotate theta such that the first axis is at the top
verts = unit_poly_verts(theta + np.pi / 2)
return plt.Polygon(verts, closed=True, edgecolor='k')
def draw_circle_patch(self):
# unit circle centered on (0.5, 0.5)
return plt.Circle((0.5, 0.5), 0.5)
patch_dict = {'polygon': draw_poly_patch, 'circle': draw_circle_patch}
if frame not in patch_dict:
raise ValueError('unknown value for `frame`: %s' % frame)
class RadarAxes(PolarAxes):
name = 'radar'
# use 1 line segment to connect specified points
RESOLUTION = 1
# define draw_frame method
draw_patch = patch_dict[frame]
def __init__(self, *args, **kwargs):
super(RadarAxes, self).__init__(*args, **kwargs)
# rotate plot such that the first axis is at the top
self.set_theta_zero_location('N')
def fill(self, *args, **kwargs):
"""Override fill so that line is closed by default"""
closed = kwargs.pop('closed', True)
return super(RadarAxes, self).fill(closed=closed, *args, **kwargs)
def plot(self, *args, **kwargs):
"""Override plot so that line is closed by default"""
lines = super(RadarAxes, self).plot(*args, **kwargs)
for line in lines:
self._close_line(line)
def _close_line(self, line):
x, y = line.get_data()
# FIXME: markers at x[0], y[0] get doubled-up
if x[0] != x[-1]:
x = np.concatenate((x, [x[0]]))
y = np.concatenate((y, [y[0]]))
line.set_data(x, y)
def set_varlabels(self, labels):
self.set_thetagrids(np.degrees(theta), labels)
def _gen_axes_patch(self):
return self.draw_patch()
def _gen_axes_spines(self):
if frame == 'circle':
return PolarAxes._gen_axes_spines(self)
# The following is a hack to get the spines (i.e. the axes frame)
# to draw correctly for a polygon frame.
# spine_type must be 'left', 'right', 'top', 'bottom', or `circle`.
spine_type = 'circle'
verts = unit_poly_verts(theta + np.pi / 2)
# close off polygon by repeating first vertex
verts.append(verts[0])
path = Path(verts)
spine = Spine(self, spine_type, path)
spine.set_transform(self.transAxes)
return {'polar': spine}
register_projection(RadarAxes)
return theta
def unit_poly_verts(theta):
"""Return vertices of polygon for subplot axes.
This polygon is circumscribed by a unit circle centered at (0.5, 0.5)
"""
x0, y0, r = [0.5] * 3
verts = [(r*np.cos(t) + x0, r*np.sin(t) + y0) for t in theta]
return verts
def example_data():
# The following data is from the Denver Aerosol Sources and Health study.
# See doi:10.1016/j.atmosenv.2008.12.017
#
# The data are pollution source profile estimates for five modeled
# pollution sources (e.g., cars, wood-burning, etc) that emit 7-9 chemical
# species. The radar charts are experimented with here to see if we can
# nicely visualize how the modeled source profiles change across four
# scenarios:
# 1) No gas-phase species present, just seven particulate counts on
# Sulfate
# Nitrate
# Elemental Carbon (EC)
# Organic Carbon fraction 1 (OC)
# Organic Carbon fraction 2 (OC2)
# Organic Carbon fraction 3 (OC3)
# Pyrolized Organic Carbon (OP)
# 2)Inclusion of gas-phase specie carbon monoxide (CO)
# 3)Inclusion of gas-phase specie ozone (O3).
# 4)Inclusion of both gas-phase species is present...
data = [
['Sulfate', 'Nitrate', 'EC', 'OC1', 'OC2', 'OC3', 'OP', 'CO', 'O3'],
('Basecase', [
[0.88, 0.01, 0.03, 0.03, 0.00, 0.06, 0.01, 0.00, 0.00],
[0.07, 0.95, 0.04, 0.05, 0.00, 0.02, 0.01, 0.00, 0.00],
[0.01, 0.02, 0.85, 0.19, 0.05, 0.10, 0.00, 0.00, 0.00],
[0.02, 0.01, 0.07, 0.01, 0.21, 0.12, 0.98, 0.00, 0.00],
[0.01, 0.01, 0.02, 0.71, 0.74, 0.70, 0.00, 0.00, 0.00]]),
('With CO', [
[0.88, 0.02, 0.02, 0.02, 0.00, 0.05, 0.00, 0.05, 0.00],
[0.08, 0.94, 0.04, 0.02, 0.00, 0.01, 0.12, 0.04, 0.00],
[0.01, 0.01, 0.79, 0.10, 0.00, 0.05, 0.00, 0.31, 0.00],
[0.00, 0.02, 0.03, 0.38, 0.31, 0.31, 0.00, 0.59, 0.00],
[0.02, 0.02, 0.11, 0.47, 0.69, 0.58, 0.88, 0.00, 0.00]]),
('With O3', [
[0.89, 0.01, 0.07, 0.00, 0.00, 0.05, 0.00, 0.00, 0.03],
[0.07, 0.95, 0.05, 0.04, 0.00, 0.02, 0.12, 0.00, 0.00],
[0.01, 0.02, 0.86, 0.27, 0.16, 0.19, 0.00, 0.00, 0.00],
[0.01, 0.03, 0.00, 0.32, 0.29, 0.27, 0.00, 0.00, 0.95],
[0.02, 0.00, 0.03, 0.37, 0.56, 0.47, 0.87, 0.00, 0.00]]),
('CO & O3', [
[0.87, 0.01, 0.08, 0.00, 0.00, 0.04, 0.00, 0.00, 0.01],
[0.09, 0.95, 0.02, 0.03, 0.00, 0.01, 0.13, 0.06, 0.00],
[0.01, 0.02, 0.71, 0.24, 0.13, 0.16, 0.00, 0.50, 0.00],
[0.01, 0.03, 0.00, 0.28, 0.24, 0.23, 0.00, 0.44, 0.88],
[0.02, 0.00, 0.18, 0.45, 0.64, 0.55, 0.86, 0.00, 0.16]])
]
return data
if __name__ == '__main__':
N = 9
theta = radar_factory(N, frame='polygon')
data = example_data()
spoke_labels = data.pop(0)
fig, axes = plt.subplots(figsize=(9, 9), nrows=2, ncols=2,
subplot_kw=dict(projection='radar'))
fig.subplots_adjust(wspace=0.25, hspace=0.20, top=0.85, bottom=0.05)
colors = ['b', 'r', 'g', 'm', 'y']
# Plot the four cases from the example data on separate axes
for ax, (title, case_data) in zip(axes.flatten(), data):
ax.set_rgrids([0.2, 0.4, 0.6, 0.8])
ax.set_title(title, weight='bold', size='medium', position=(0.5, 1.1),
horizontalalignment='center', verticalalignment='center')
for d, color in zip(case_data, colors):
ax.plot(theta, d, color=color)
ax.fill(theta, d, facecolor=color, alpha=0.25)
ax.set_varlabels(spoke_labels)
# add legend relative to top-left plot
ax = axes[0, 0]
labels = ('Factor 1', 'Factor 2', 'Factor 3', 'Factor 4', 'Factor 5')
legend = ax.legend(labels, loc=(0.9, .95),
labelspacing=0.1, fontsize='small')
fig.text(0.5, 0.965, '5-Factor Solution Profiles Across Four Scenarios',
horizontalalignment='center', color='black', weight='bold',
size='large')
plt.show()
In [11]:
!cat /proc/cpuinfo
In [12]:
!cat /etc/os-release | grep VERSION
In [13]:
!head -5 /proc/cpuinfo | grep "BogoMIPS"
In [14]:
!cat /proc/meminfo | grep 'Mem*'
In [15]:
!ifconfig
In [16]:
!pwd
!echo --------------------------------------------
!ls -C --color
In [17]:
files = !ls | head -3
print(files)
In [18]:
shell_nbs = '*.ipynb | grep "ipynb"'
!ls {shell_nbs}
IPython has a set of predefined ‘magic functions’ that you can call with a command line style syntax. There are two kinds of magics, line-oriented and cell-oriented. Line magics are prefixed with the % character and work much like OS command-line calls: they get as an argument the rest of the line, where arguments are passed without parentheses or quotes. Cell magics are prefixed with a double %%, and they are functions that get as an argument not only the rest of the line, but also the lines below it in a separate argument.
To learn more about the IPython magics, simple type %magic in a separate cell
Below is a list of available magics
In [19]:
%lsmagic
Out[19]:
The following examples show how to call the built-in%time magic
%time times the execution of a single statement
Reference: The next two code cells are excerpted from the Python Data Science Handbook by Jake VanderPlas
Link to full handbook
In [20]:
import random
L = [random.random() for _ in range(100000)]
%time L.sort()
In [21]:
%time L.sort()
If you want to, you can combine code from multiple kernels into one notebook.
Just use IPython Magics with the name of your kernel at the start of each cell that you want to use that Kernel for:
%%bash
%%HTML
%%python2
%%python3
%%ruby
%%perl
In [22]:
%%bash
factorial()
{
if [ "$1" -gt "1" ]
then
i=`expr $1 - 1`
j=`factorial $i`
k=`expr $1 \* $j`
echo $k
else
echo 1
fi
}
input=5
val=$(factorial $input)
echo "Factorial of $input is : "$val