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Need to write python source with python

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  Need to write python source with python crstop@gmail.com - 2012-02-28 09:36 -0800
    Re: Need to write python source with python Peter Otten <__peter__@web.de> - 2012-02-28 18:56 +0100
      Re: Need to write python source with python 88888 Dihedral <dihedral88888@googlemail.com> - 2012-02-28 10:09 -0800
      Re: Need to write python source with python 88888 Dihedral <dihedral88888@googlemail.com> - 2012-02-28 10:09 -0800
      Re: Need to write python source with python crstop@gmail.com - 2012-02-28 10:30 -0800
      Re: Need to write python source with python crstop@gmail.com - 2012-02-28 10:30 -0800
        Re: Need to write python source with python Peter Otten <__peter__@web.de> - 2012-02-28 20:25 +0100
          Re: Need to write python source with python crstop@gmail.com - 2012-02-28 11:36 -0800
          Re: Need to write python source with python crstop@gmail.com - 2012-02-28 11:36 -0800

#20988 — Need to write python source with python

Hi All,

I'm new to Python but have experience with a few other programming languages(Java, Perl, JavaScript). 

I'm using Python 2.7.2 and I'm trying to create and write to a file (.py) a python class and functions from python. I will also need to later read and edit the file. I realize I could just write strings using the available string and file writing methods but suspect there is a better way than that. 

I have read about pickle, ast, and Django; searched this group and the web but haven't found a solution that seems to fit. Any suggestion? 

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#20989

crstop@gmail.com wrote:

> I'm new to Python but have experience with a few other programming
> languages(Java, Perl, JavaScript).
> 
> I'm using Python 2.7.2 and I'm trying to create and write to a file (.py)
> a python class and functions from python. I will also need to later read
> and edit the file. I realize I could just write strings using the
> available string and file writing methods but suspect there is a better
> way than that.
> 
> I have read about pickle, ast, and Django; searched this group and the web
> but haven't found a solution that seems to fit. Any suggestion?

Due to Python's dynamic nature it is rarely necessary to generate Python 
code. What are you actually trying to achieve?

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#20990

在 2012年2月29日星期三UTC+8上午1时56分43秒，Peter Otten写道：
> crstop@gmail.com wrote:
> 
> > I'm new to Python but have experience with a few other programming
> > languages(Java, Perl, JavaScript).
> > 
> > I'm using Python 2.7.2 and I'm trying to create and write to a file (.py)
> > a python class and functions from python. I will also need to later read
> > and edit the file. I realize I could just write strings using the
> > available string and file writing methods but suspect there is a better
> > way than that.
> > 
> > I have read about pickle, ast, and Django; searched this group and the web
> > but haven't found a solution that seems to fit. Any suggestion?
> 
> Due to Python's dynamic nature it is rarely necessary to generate Python 
> code. What are you actually trying to achieve?

Check myHDL, and BOA and pythoncard that can  translate user messages
to pyhton code as delphie.

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#20991

在 2012年2月29日星期三UTC+8上午1时56分43秒，Peter Otten写道：
> crstop@gmail.com wrote:
> 
> > I'm new to Python but have experience with a few other programming
> > languages(Java, Perl, JavaScript).
> > 
> > I'm using Python 2.7.2 and I'm trying to create and write to a file (.py)
> > a python class and functions from python. I will also need to later read
> > and edit the file. I realize I could just write strings using the
> > available string and file writing methods but suspect there is a better
> > way than that.
> > 
> > I have read about pickle, ast, and Django; searched this group and the web
> > but haven't found a solution that seems to fit. Any suggestion?
> 
> Due to Python's dynamic nature it is rarely necessary to generate Python 
> code. What are you actually trying to achieve?

Check myHDL, and BOA and pythoncard that can  translate user messages
to pyhton code as delphie.

[toc] | [prev] | [next] | [standalone]

#20995

On Tuesday, February 28, 2012 9:56:43 AM UTC-8, Peter Otten wrote:
> crstop@gmail.com wrote:
> 
> > I'm new to Python but have experience with a few other programming
> > languages(Java, Perl, JavaScript).
> > 
> > I'm using Python 2.7.2 and I'm trying to create and write to a file (.py)
> > a python class and functions from python. I will also need to later read
> > and edit the file. I realize I could just write strings using the
> > available string and file writing methods but suspect there is a better
> > way than that.
> > 
> > I have read about pickle, ast, and Django; searched this group and the web
> > but haven't found a solution that seems to fit. Any suggestion?
> 
> Due to Python's dynamic nature it is rarely necessary to generate Python 
> code. What are you actually trying to achieve?

I'm trying to generate the script file that will launch a PythonCard resource file.

very basic example from the documentation.

    #!/usr/bin/python
    """
    __version__ = "$Revision: 1.10 $"
    __date__ = "$Date: 2004/04/24 22:13:31 $"
    """

    from PythonCard import model
    
    class Minimal(model.Background):
        pass
    
    if __name__ == '__main__':
        app = model.Application(Minimal)
        app.MainLoop() 

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#20996

On Tuesday, February 28, 2012 9:56:43 AM UTC-8, Peter Otten wrote:
> crstop@gmail.com wrote:
> 
> > I'm new to Python but have experience with a few other programming
> > languages(Java, Perl, JavaScript).
> > 
> > I'm using Python 2.7.2 and I'm trying to create and write to a file (.py)
> > a python class and functions from python. I will also need to later read
> > and edit the file. I realize I could just write strings using the
> > available string and file writing methods but suspect there is a better
> > way than that.
> > 
> > I have read about pickle, ast, and Django; searched this group and the web
> > but haven't found a solution that seems to fit. Any suggestion?
> 
> Due to Python's dynamic nature it is rarely necessary to generate Python 
> code. What are you actually trying to achieve?

I'm trying to generate the script file that will launch a PythonCard resource file.

very basic example from the documentation.

    #!/usr/bin/python
    """
    __version__ = "$Revision: 1.10 $"
    __date__ = "$Date: 2004/04/24 22:13:31 $"
    """

    from PythonCard import model
    
    class Minimal(model.Background):
        pass
    
    if __name__ == '__main__':
        app = model.Application(Minimal)
        app.MainLoop() 

[toc] | [prev] | [next] | [standalone]

#21000

crstop@gmail.com wrote:

> On Tuesday, February 28, 2012 9:56:43 AM UTC-8, Peter Otten wrote:
>> crstop@gmail.com wrote:
>> 
>> > I'm new to Python but have experience with a few other programming
>> > languages(Java, Perl, JavaScript).
>> > 
>> > I'm using Python 2.7.2 and I'm trying to create and write to a file
>> > (.py) a python class and functions from python. I will also need to
>> > later read and edit the file. I realize I could just write strings
>> > using the available string and file writing methods but suspect there
>> > is a better way than that.
>> > 
>> > I have read about pickle, ast, and Django; searched this group and the
>> > web but haven't found a solution that seems to fit. Any suggestion?
>> 
>> Due to Python's dynamic nature it is rarely necessary to generate Python
>> code. What are you actually trying to achieve?
> 
> I'm trying to generate the script file that will launch a PythonCard
> resource file.
> 
> very basic example from the documentation.
> 
>     #!/usr/bin/python
>     """
>     __version__ = "$Revision: 1.10 $"
>     __date__ = "$Date: 2004/04/24 22:13:31 $"
>     """
> 
>     from PythonCard import model
>     
>     class Minimal(model.Background):
>         pass
>     
>     if __name__ == '__main__':
>         app = model.Application(Minimal)
>         app.MainLoop()

If it doesn't get too complex you could start with Python's built-in string 
formatting:

import sys

template = '''\
#!/usr/bin/python
from PythonCard import model

class {Class}(model.Background):
    pass

if __name__ == '__main__':
    app = model.Application({Class})
    app.MainLoop()
'''

resourcename, filename = sys.argv[1:]

with open(resourcename, "U") as f:
    data = eval(f.read())

with open(filename, "w") as f:
    f.write(template.format(Class=data["application"]["name"]))

If you need logic inside the template, here's on overview: 

http://wiki.python.org/moin/Templating

So there are rather too many options than too few.

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#21002

On Tuesday, February 28, 2012 11:25:33 AM UTC-8, Peter Otten wrote:
> crstop@gmail.com wrote:
> 
> > On Tuesday, February 28, 2012 9:56:43 AM UTC-8, Peter Otten wrote:
> >> crstop@gmail.com wrote:
> >> 
> >> > I'm new to Python but have experience with a few other programming
> >> > languages(Java, Perl, JavaScript).
> >> > 
> >> > I'm using Python 2.7.2 and I'm trying to create and write to a file
> >> > (.py) a python class and functions from python. I will also need to
> >> > later read and edit the file. I realize I could just write strings
> >> > using the available string and file writing methods but suspect there
> >> > is a better way than that.
> >> > 
> >> > I have read about pickle, ast, and Django; searched this group and the
> >> > web but haven't found a solution that seems to fit. Any suggestion?
> >> 
> >> Due to Python's dynamic nature it is rarely necessary to generate Python
> >> code. What are you actually trying to achieve?
> > 
> > I'm trying to generate the script file that will launch a PythonCard
> > resource file.
> > 
> > very basic example from the documentation.
> > 
> >     #!/usr/bin/python
> >     """
> >     __version__ = "$Revision: 1.10 $"
> >     __date__ = "$Date: 2004/04/24 22:13:31 $"
> >     """
> > 
> >     from PythonCard import model
> >     
> >     class Minimal(model.Background):
> >         pass
> >     
> >     if __name__ == '__main__':
> >         app = model.Application(Minimal)
> >         app.MainLoop()
> 
> If it doesn't get too complex you could start with Python's built-in string 
> formatting:
> 
> import sys
> 
> template = '''\
> #!/usr/bin/python
> from PythonCard import model
> 
> class {Class}(model.Background):
>     pass
> 
> if __name__ == '__main__':
>     app = model.Application({Class})
>     app.MainLoop()
> '''
> 
> resourcename, filename = sys.argv[1:]
> 
> with open(resourcename, "U") as f:
>     data = eval(f.read())
> 
> with open(filename, "w") as f:
>     f.write(template.format(Class=data["application"]["name"]))
> 
> If you need logic inside the template, here's on overview: 
> 
> http://wiki.python.org/moin/Templating
> 
> So there are rather too many options than too few.

It shouldn't get very complicated so I look through those options.

Thanks to all posters

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#21003

On Tuesday, February 28, 2012 11:25:33 AM UTC-8, Peter Otten wrote:
> crstop@gmail.com wrote:
> 
> > On Tuesday, February 28, 2012 9:56:43 AM UTC-8, Peter Otten wrote:
> >> crstop@gmail.com wrote:
> >> 
> >> > I'm new to Python but have experience with a few other programming
> >> > languages(Java, Perl, JavaScript).
> >> > 
> >> > I'm using Python 2.7.2 and I'm trying to create and write to a file
> >> > (.py) a python class and functions from python. I will also need to
> >> > later read and edit the file. I realize I could just write strings
> >> > using the available string and file writing methods but suspect there
> >> > is a better way than that.
> >> > 
> >> > I have read about pickle, ast, and Django; searched this group and the
> >> > web but haven't found a solution that seems to fit. Any suggestion?
> >> 
> >> Due to Python's dynamic nature it is rarely necessary to generate Python
> >> code. What are you actually trying to achieve?
> > 
> > I'm trying to generate the script file that will launch a PythonCard
> > resource file.
> > 
> > very basic example from the documentation.
> > 
> >     #!/usr/bin/python
> >     """
> >     __version__ = "$Revision: 1.10 $"
> >     __date__ = "$Date: 2004/04/24 22:13:31 $"
> >     """
> > 
> >     from PythonCard import model
> >     
> >     class Minimal(model.Background):
> >         pass
> >     
> >     if __name__ == '__main__':
> >         app = model.Application(Minimal)
> >         app.MainLoop()
> 
> If it doesn't get too complex you could start with Python's built-in string 
> formatting:
> 
> import sys
> 
> template = '''\
> #!/usr/bin/python
> from PythonCard import model
> 
> class {Class}(model.Background):
>     pass
> 
> if __name__ == '__main__':
>     app = model.Application({Class})
>     app.MainLoop()
> '''
> 
> resourcename, filename = sys.argv[1:]
> 
> with open(resourcename, "U") as f:
>     data = eval(f.read())
> 
> with open(filename, "w") as f:
>     f.write(template.format(Class=data["application"]["name"]))
> 
> If you need logic inside the template, here's on overview: 
> 
> http://wiki.python.org/moin/Templating
> 
> So there are rather too many options than too few.

It shouldn't get very complicated so I look through those options.

Thanks to all posters

[toc] | [prev] | [standalone]

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