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Engineering LibreTexts

4.4: Credits and Imports

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    \( \newcommand{\vecs}[1]{\overset { \scriptstyle \rightharpoonup} {\mathbf{#1}} } \) \( \newcommand{\vecd}[1]{\overset{-\!-\!\rightharpoonup}{\vphantom{a}\smash {#1}}} \)\(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\) \(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\)\(\newcommand{\AA}{\unicode[.8,0]{x212B}}\)

    # Memory Puzzle
    # By Al Sweigart
    # Released under a "Simplified BSD" license
    import random, pygame, sys
    from pygame.locals import *

    At the top of the program are comments about what the game is, who made it, and where the user could find more information. There’s also a note that the source code is freely copyable under a "Simplified BSD" license. The Simplified BSD license is more appropriate for software than the Creative Common license (which this book is released under), but they basically mean the same thing: People are free to copy and share this game. More info about licenses can be found at

    This program makes use of many functions in other modules, so it imports those modules on line 6. Line 7 is also an import statement in the from (module name) import * format, which means you do not have to type the module name in front of it. There are no functions in the pygame.locals module, but there are several constant variables in it that we want to use such as MOUSEMOTION, KEYUP, or QUIT. Using this style of import statement, we only have to type MOUSEMOTION rather than pygame.locals.MOUSEMOTION.

    This page titled 4.4: Credits and Imports is shared under a CC BY-NC-SA 3.0 license and was authored, remixed, and/or curated by Al Sweigart via source content that was edited to the style and standards of the LibreTexts platform; a detailed edit history is available upon request.

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