On 20/12/12 04:37, rail shafigulin wrote:
I'm attempting to write a script with command-line arguments. Based on some reading I have done online and some advice from this mailing list I'm going to use docopt and schema modules. The problem I'm facing is that I'd like to be able to give this script to anyone who needs it by just using one file, i.e. the script itself. Does anybody know if there is a way to achieve this without pasting code from docopt and schema into my script file.
You cannot just copy and paste code from one module to another, unless the licence permits it, and you obey whatever obligations are laid on you by doing so. If you don't, then you are in breach of copyright and, worse, potentially acting in an unethical manner. Just because a programmer gives you access to source code doesn't mean you can appropriate it as your own without respecting his licence conditions. Also, copying and pasting code is one of the worst habits you can get into. Don't do it. The solution to this depends on how much effort you want to put into this. 1) The most basic option: dependencies are not your problem. It is up to the recipient of your software to install the prerequisite modules, not you. 2) Give them a download link where they can get the dependencies. 3) Actually install those dependencies for them: when your program runs, it tries to import the modules it needs, and if it cannot find them, it runs an installer to download the modules from the Internet and install them. (This is a lot of work and probably not a good idea.) 4) Bundle the modules together in one file. If you zip up the modules in a zip file as if it were a package, *without* the package directory, then change the file extension to .py, you can run it as if it were a single Python script (at least under Linux, I haven't tried Windows or Mac). But if you do this, you have to obey the licence conditions (if any) on the modules you use. For example, I create a Python package, consisting of a directory, two special files, and whatever modules are needed: test/ +- __init__.py +- __main__.py +- spam.py +- ham.py The file "__init__.py" is special, it is needed by Python to treat this as a package. It can be empty. The file "__main__.py" is special. It is used as the script when you give the command "python test". Whatever code is inside the __main__.py file will run. The two modules "spam.py" and "ham.py" are just examples, you can use any modules that you like or need. Inside __main__.py, type this: import ham, spam # or whatever modules you need print "Success!" # or do something useful Now test that this works correctly, as a Python package. From the command line: [steve@ando python]$ ls test ham.py __init__.py __main__.py spam.py [steve@ando python]$ python test Success! Now build a zip file, change the extension, and run it: [steve@ando python]$ zip -j myscript test/* adding: ham.py (stored 0%) adding: ham.pyc (deflated 33%) adding: __init__.py (stored 0%) adding: __main__.py (stored 0%) adding: spam.py (stored 0%) adding: spam.pyc (deflated 32%) [steve@ando python]$ mv myscript.zip myscript.py [steve@ando python]$ python myscript.py Success! 5) On Windows, you can bundle your script and dependencies using py2exe. I know nothing about it, but the search engine of your choice will have lots of information: https://duckduckgo.com/?q=py2exe I believe there is also a py2app for Mac users. Again, obey the licence conditions. 6) There are a few more options here: http://www.effbot.org/zone/python-compile.htm 7) Use a full Python packaging and distribution utility, like Easy Install or Pip: http://packages.python.org/distribute/easy_install.html http://pypi.python.org/pypi/pip There are wars being fought over which distribution utilities; I don't have an opinion on which is best. -- Steven _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
