[Tutor] Calling Program within Program

patty at cruzio.com patty at cruzio.com
Fri Dec 10 17:46:14 CET 2010

Hello Modulok:

The code below is very simple, so I don't think you would have needed to
read it.  I will review the subprocess doc and look this up in my books
and class notes.  If I have more questions, I will email the group.

 I also realized that I wasn't clear in asking a secondary question which
is what directory/directories to place files that are part of a program,
actually an application.  As if you were creating a source code hierarchy
for the first time :}  If I have more questions about that I will email
again and change the subject header.

Thanks for the reply!!


> Patty,
> I didn't read through your code, but to call an external program see
> the 'subprocess' module in the standard library:
> http://docs.python.org/library/subprocess.html
> -Modulok-
> On 12/9/10, patty at cruzio.com <patty at cruzio.com> wrote:
>> Hello:
>> I would like to know how to call a program from within a program and
>> what
>> directory I should place one small program file in.  I am running Python
>> 2.6.6 and Windows 7.
>> I have a directory called  C:\Users\StarShip\PyProgs and it has the
>> files
>> BreakersCafe.txt and BreakersCafe.py.  This is my primary program
>> running
>> fine.
>> I have a subdirectory called C:\Users\StarShip\PyProg
>> \PicturesForTesting
>> and another subdirectory C:\Users\StarShip\PyProgs\CustomFunctions with
>> various program files, functions defined  in them, etc.  which I import
>> in
>> my primary program.   For example:
>>  def Newbanner():
>>     print "\n                       Alternate Selections\n"
>> Now I have the small program below which is fully self-contained and I
>> want to execute it from within  BreakersCafe.txt. I would like to use
>> raw_input and if statement for simple yes/no asking if they would like
>> to
>> see this BeveragesMenu.txt and have it as the last 3-4 lines of the
>> main().
>> The only directory of these three that has __init__ is
>>    C:\Users\StarShip\PyProgs\CustomFunctions
>> and as you can see, the program below is not a function, it has no 'def'
>> anything.  I get 'NameError: global name 'BeveragesMenu' is not defined'
>> when I run this in IDLE.  I suppose I _could_ make this a function :}
>> but
>> it is likely doable to call a program as a program, right?  I am also
>> compiling to a .pyw file where applicable.
>> Thanks for the help.
>> Patty
>> """
>> This is C:\Users\StarShip\PyProgs\BeveragesMenu.txt and
>> BeveragesMenu.py.
>> Program file for displaying an image using Tkinter built-in GUI
>> functions.
>>  open root window, open file descriptor for image, open new window file
>> descriptor to manipulate with Tkinter Label library function.
>> Pic needs to be displayed as a banner. Uses the compound="top" argument
>> to
>> do this.
>> -->  take out the pack()function didn't work, pack()is required
>> Uses   import Tkinter
>> Program using new breaker's jpg picture; bar choices are not selectable
>> """
>> import Tkinter
>> import ImageTk
>> rootwindow = Tkinter.Tk()
>> fhdl=
>> ImageTk.Image.open("C:\Users\StarShip\PyProgs\PicturesForTesting\houseimage.jpg")
>> image_var = ImageTk.PhotoImage(fhdl)
>> whdl = Tkinter.Label(rootwindow, compound="top", image=image_var,
>> text="\n\n!!!WELCOME TO BREAKER'S BREAKFAST BAR!!!\n\n\nBeverage
>> Choices:
>> Sparkling Water;  Milk;  Orange Juice;  Apple Juice  *OR*\n\n  **From
>> Our
>> Bar**    Smoothie;  Breakers Sun Tea;  Chai;  Cafe Mocha;  Latte;
>> Mimosa")
>> whdl.pack()
>> rootwindow.mainloop()
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