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First upload of source-code files for our book "Python for Programmers"
Source-code and related files for our book's examples.
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‎examples/ch01/RollDieDynamic.py

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# RollDieDynamic.py
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"""Dynamically graphing frequencies of die rolls."""
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from matplotlib import animation
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import matplotlib.pyplot as plt
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import random
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import seaborn as sns
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import sys
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def update(frame_number, rolls, faces, frequencies):
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"""Configures bar plot contents for each animation frame."""
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# roll die and update frequencies
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for i in range(rolls):
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frequencies[random.randrange(1, 7) - 1] += 1
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# reconfigure plot for updated die frequencies
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plt.cla() # clear old contents contents of current Figure
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axes = sns.barplot(faces, frequencies, palette='bright') # new bars
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axes.set_title(f'Die Frequencies for {sum(frequencies):,} Rolls')
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axes.set(xlabel='Die Value', ylabel='Frequency')
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axes.set_ylim(top=max(frequencies) * 1.10) # scale y-axis by 10%
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# display frequency & percentage above each patch (bar)
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for bar, frequency in zip(axes.patches, frequencies):
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text_x = bar.get_x() + bar.get_width() / 2.0
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text_y = bar.get_height()
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text = f'{frequency:,}\n{frequency / sum(frequencies):.3%}'
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axes.text(text_x, text_y, text, ha='center', va='bottom')
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# read command-line arguments for number of frames and rolls per frame
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number_of_frames = int(sys.argv[1])
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rolls_per_frame = int(sys.argv[2])
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sns.set_style('whitegrid') # white backround with gray grid lines
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figure = plt.figure('Rolling a Six-Sided Die') # Figure for animation
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values = list(range(1, 7)) # die faces for display on x-axis
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frequencies = [0] * 6 # six-element list of die frequencies
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# configure and start animation that calls function update
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die_animation = animation.FuncAnimation(
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figure, update, repeat=False, frames=number_of_frames, interval=33,
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fargs=(rolls_per_frame, values, frequencies))
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plt.show() # display window
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#**************************************************************************
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#* (C) Copyright 1992-2018 by Deitel & Associates, Inc. and *
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#* Pearson Education, Inc. All Rights Reserved. *
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#* *
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#* DISCLAIMER: The authors and publisher of this book have used their *
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#* best efforts in preparing the book. These efforts include the *
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#* development, research, and testing of the theories and programs *
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#* to determine their effectiveness. The authors and publisher make *
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#* no warranty of any kind, expressed or implied, with regard to these *
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#* programs or to the documentation contained in these books. The authors *
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#* and publisher shall not be liable in any event for incidental or *
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#* consequential damages in connection with, or arising out of, the *
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#* furnishing, performance, or use of these programs. *
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#**************************************************************************

‎examples/ch02/fig02_01.py

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# fig02_01.py
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"""Compare integers using if statements and comparison operators."""
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print('Enter two integers and I will tell you',
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'the relationships they satisfy.')
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# read first integer
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number1 = int(input('Enter first integer: '))
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# read second integer
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number2 = int(input('Enter second integer: '))
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if number1 == number2:
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print(number1, 'is equal to', number2)
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if number1 != number2:
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print(number1, 'is not equal to', number2)
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if number1 < number2:
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print(number1, 'is less than', number2)
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if number1 > number2:
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print(number1, 'is greater than', number2)
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if number1 <= number2:
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print(number1, 'is less than or equal to', number2)
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if number1 >= number2:
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print(number1, 'is greater than or equal to', number2)
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##########################################################################
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# (C) Copyright 2019 by Deitel & Associates, Inc. and #
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# Pearson Education, Inc. All Rights Reserved. #
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# #
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# DISCLAIMER: The authors and publisher of this book have used their #
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# best efforts in preparing the book. These efforts include the #
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# development, research, and testing of the theories and programs #
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# to determine their effectiveness. The authors and publisher make #
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# no warranty of any kind, expressed or implied, with regard to these #
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# programs or to the documentation contained in these books. The authors #
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# and publisher shall not be liable in any event for incidental or #
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# consequential damages in connection with, or arising out of, the #
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# furnishing, performance, or use of these programs. #
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##########################################################################

‎examples/ch02/fig02_02.py

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# Fig. 2.2: fig02_02.py
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"""Find the minimum of three values."""
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number1 = int(input('Enter first integer: '))
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number2 = int(input('Enter second integer: '))
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number3 = int(input('Enter third integer: '))
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minimum = number1
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if number2 < minimum:
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minimum = number2
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if number3 < minimum:
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minimum = number3
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print('Minimum value is', minimum)
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##########################################################################
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# (C) Copyright 2019 by Deitel & Associates, Inc. and #
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# Pearson Education, Inc. All Rights Reserved. #
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# #
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# DISCLAIMER: The authors and publisher of this book have used their #
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# best efforts in preparing the book. These efforts include the #
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# development, research, and testing of the theories and programs #
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# to determine their effectiveness. The authors and publisher make #
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# no warranty of any kind, expressed or implied, with regard to these #
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# programs or to the documentation contained in these books. The authors #
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# and publisher shall not be liable in any event for incidental or #
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# consequential damages in connection with, or arising out of, the #
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# furnishing, performance, or use of these programs. #
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##########################################################################

‎examples/ch02/snippets_ipynb/02_02.ipynb

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{
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"cells": [
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"# 2.2 Variables and Assignment Statements"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": [
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"45 + 72"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": [
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"x = 7"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": [
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"y = 3"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"### Adding Variable Values and Viewing the Result"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": [
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"x + y"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"### Calculations in Assignment Statements"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": [
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"total = x + y"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": [
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"total"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"### Types"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": [
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"type(x)"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": [
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"type(10.5)"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {},
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"outputs": [],
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"source": [
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"##########################################################################\n",
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"# (C) Copyright 2019 by Deitel & Associates, Inc. and #\n",
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"# Pearson Education, Inc. All Rights Reserved. #\n",
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"# #\n",
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"# DISCLAIMER: The authors and publisher of this book have used their #\n",
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"# best efforts in preparing the book. These efforts include the #\n",
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"# development, research, and testing of the theories and programs #\n",
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"# to determine their effectiveness. The authors and publisher make #\n",
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"# no warranty of any kind, expressed or implied, with regard to these #\n",
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"# programs or to the documentation contained in these books. The authors #\n",
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"# and publisher shall not be liable in any event for incidental or #\n",
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"# consequential damages in connection with, or arising out of, the #\n",
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"# furnishing, performance, or use of these programs. #\n",
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"##########################################################################\n"
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]
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}
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],
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"metadata": {
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"kernelspec": {
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"display_name": "Python 3",
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"language": "python",
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"name": "python3"
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},
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"language_info": {
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"codemirror_mode": {
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"name": "ipython",
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"version": 3
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},
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"file_extension": ".py",
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"mimetype": "text/x-python",
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"name": "python",
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"nbconvert_exporter": "python",
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"pygments_lexer": "ipython3",
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"version": "3.6.6"
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}
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},
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"nbformat": 4,
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"nbformat_minor": 2
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}

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