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      GameDev.net and CRC Press have teamed up to bring a free ebook of content curated from top titles published by CRC Press. The freebook, Practices of Game Design & Indie Game Marketing, includes chapters from The Art of Game Design: A Book of Lenses, A Practical Guide to Indie Game Marketing, and An Architectural Approach to Level Design. The GameDev.net FreeBook is relevant to game designers, developers, and those interested in learning more about the challenges in game development. We know game development can be a tough discipline and business, so we picked several chapters from CRC Press titles that we thought would be of interest to you, the GameDev.net audience, in your journey to design, develop, and market your next game. The free ebook is available through CRC Press by clicking here. The Curated Books The Art of Game Design: A Book of Lenses, Second Edition, by Jesse Schell Presents 100+ sets of questions, or different lenses, for viewing a game’s design, encompassing diverse fields such as psychology, architecture, music, film, software engineering, theme park design, mathematics, anthropology, and more. Written by one of the world's top game designers, this book describes the deepest and most fundamental principles of game design, demonstrating how tactics used in board, card, and athletic games also work in video games. It provides practical instruction on creating world-class games that will be played again and again. View it here. A Practical Guide to Indie Game Marketing, by Joel Dreskin Marketing is an essential but too frequently overlooked or minimized component of the release plan for indie games. A Practical Guide to Indie Game Marketing provides you with the tools needed to build visibility and sell your indie games. With special focus on those developers with small budgets and limited staff and resources, this book is packed with tangible recommendations and techniques that you can put to use immediately. As a seasoned professional of the indie game arena, author Joel Dreskin gives you insight into practical, real-world experiences of marketing numerous successful games and also provides stories of the failures. View it here. An Architectural Approach to Level Design This is one of the first books to integrate architectural and spatial design theory with the field of level design. The book presents architectural techniques and theories for level designers to use in their own work. It connects architecture and level design in different ways that address the practical elements of how designers construct space and the experiential elements of how and why humans interact with this space. Throughout the text, readers learn skills for spatial layout, evoking emotion through gamespaces, and creating better levels through architectural theory. View it here. Learn more and download the ebook by clicking here. Did you know? GameDev.net and CRC Press also recently teamed up to bring GDNet+ Members up to a 20% discount on all CRC Press books. Learn more about this and other benefits here.
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Misery

How to use the same system shell all the time in python

7 posts in this topic

Hi,

 

I need to run several shell commands from Python. How do I use all the time the same shell?

Because if I use  system in such manner:

 

 

from os import system

system("set x=0") #setting a system variable
system("echo %x%") #it does not exist here anymore
 

 

 

after first use the defined variable does not exist anymore.

How to workaround this?

 

Thanks,

 

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Thanks for answers.

Somehow this command with new line operator does not work, but one can join commands with & sign.

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It works fine for me under Ubuntu 12.10, Python 2.7.3.

 

 What is the output of the following script?

 

import os
print os.system("x=15\necho $x")

 

I have the following output:

  

15
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Edited by renega_666
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If you are using Windows you might want to try \r\n instead of just \n for your newlines... perhaps that is the reason it doesn't work?

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As this what I am doing is a multiplatform installer I finally decided to use Batch/Shell files, so system command calls only a file which has everything inside. That's even better solution, than trying to concatenate all commands. It seems a bit more flexible now as one can put many scripts in a source directory and run them one by one.

Edited by Misery
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Glad you found a solution that suits your needs.

 

May I ask you why you want to create a multiplatform installer? I ask this because it is usually advised to use the targeted system's package manager (Windows Installer on Windows, Debian and RPM on GNU/Linux, PyPi if you want to distribute a python package, and so on...)

Edited by renega_666
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