[Tutor] CLS?

[Chris Smith]

I have this in my misc library.  It was my last attempt at unifying the 
cls function snippets that I got when I asked about this question some 
time ago (check the ASPN tutor archives for 'cls').  After adding 
"darwin" to the test for the system (instead of just 'mac') I got it to 
work from a script written and executed in pythonIDE for 2.3.3.  Does 
it work for you in your context?  (Note: it ends with the "white paper" 
method if all else fails.)

###
#--------------------------
def isInteractive():
     """Returns 1 if we're running in an interpreter window, and false
     otherwise.    This is a variation of what
     pydoc.help() tries.     If it doesn't work it might be because the
     None, 1, "?" is occuring on a different line.  One might consider
     the following approach instead:

     for li in inspect.stack():
     if li[1:4] == (None, 1, "?"):
         return 1

     """
     #return inspect.stack()[2][1:4] == (None, 1, "?")
     # the line above will enable the math if called on the 1st line of 
a script

     #return inspect.stack()[3][1].find("PyInteractive")<>0
     # but if this encounters a None at that position it will not be able
     # to use the find function.     SO...let's just look through the 
whole stack
     import inspect
     return str([x[1] for x in inspect.stack()]).find("PyInteractive")>-1

#--------------------------
def cls():
     """A function to clear the output window."""
     import sys,os
     if sys.platform in ['mac', 'darwin']:
         if isInteractive():
             import PyConsole
             PyConsole.console.clearbuffer()
             print
         else:
             print #in case the window is not open yet
             sys.stdout.clearbuffer()
     else:
         try:
             os.system('cls')
         except:
             try:
                 os.system('clear')
             except:
                 try:
                     print
                     sys.stdout.write(os.popen("clear").read())
                 except:
                     print '\n'*80
###