Back to my nocturnal habits... The latest entries into http://python.faqts.com Fiona ## Unanswered Questions ######################################## ------------------------------------------------------------- How can I use the ConfigParser to parse through a text file? http://www.faqts.com/knowledge-base/view.phtml/aid/5928 ------------------------------------------------------------- Sumita Ponnuchamy ## New Entries ################################################# ------------------------------------------------------------- Setting Focus in Pmw.Dialog http://www.faqts.com/knowledge-base/view.phtml/aid/5936 ------------------------------------------------------------- Fiona Czuczman Matthew Dixon Cowles Problem: I use Pmw.Dialog to prompt the user for some text. The dialog is just what I need, but for some reason I can't set the initial keyboard focus to the entry field. The standard "askstring" dialog doesn't give me control over the edit field size (that I can see), so I tried this: ------------------------------------------------------------------------ dialog = Pmw.Dialog( root, buttons = ( 'OK', ), buttonboxpos = S, title = 'Prompt' ) w = Pmw.EntryField( dialog.interior(), label_text = prompt, labelpos = NW, labelmargin = 1, entry_width = 50 ) w.pack( padx = 15, pady = 15 ) dialog.configure( activatecommand = w.focus_set ) dialog.focus_force() dialog.activate() ---------------------------------------------------------------------- The result of "dialog.configure( activatecommand = w.focus_set )" is that the dialog doesn't get focus at all. If I comment this line out, the dialog gets focus, but the user has to click in the entry field, or tab twice to get to it (first tab goes to OK button). Solution: Your problem is that a Pmw.EntryField is itself a compound widget (I've been caught by this one too). You want something like: dialog.configure( activatecommand = w.component("entry").focus_set ) You can also get a similar result by replacing dialog.configure( activatecommand = w.focus_set ) dialog.focus_force() with w.component("entry").focus_force() ------------------------------------------------------------- How do I pass on keyword arguments in a function? http://www.faqts.com/knowledge-base/view.phtml/aid/5937 ------------------------------------------------------------- Fiona Czuczman Johann Hibschman, Greg Ewing Problem: ------------- def mark( a, b , **kw): print 'Mark' passKeywords(kw) # THIS DOESN'T WORK!!! MAKE IT WORK!!! def passKeywords( a,**kw ) """ just do something """ print 'Gibson' ------------- call it: doSomething( 1,3,name='Mark',Last='Gibson') produces: Mark Traceback (innermost last): File "<stdin>", line 1, in ? File "<stdin>", line 3, in mark TypeError: too many arguments; expected 0, got 1 ----------------- What I want to know is how do I pass kw from mark() to passKeywords()? Solution: apply(passKeywords, (), kw) Or, in Python 2.0, passKeywords(**kw) ------------------------------------------------------------- What is the exact purpose of fileno()? http://www.faqts.com/knowledge-base/view.phtml/aid/5938 ------------------------------------------------------------- Fiona Czuczman Donn Cave The file object is an I/O buffer and a device. The C library allocates space for the buffer in your process memory, and when you read or write the data comes from or goes to that buffer. The stdio C library functions manage the buffer by reading or writing to the device. Since physical device access is a very expensive operation for the computer, buffering like that basically allows you to work with small or random size I/O requests while economizing on system resources. However, there are times when you need to do something that the stdio library doesn't account for, like select(), or a filesystem lock, or some terminal driver function. The fileno() function exposes the file object's file descriptor or unit number, which on UNIX is the raw device. Select() already knows about fileno(), so you can give it a socket or whatever and it will call fileno() itself, but usually it's up to you to call fileno() and get the descriptor. Of course the socket fileno() function is more or less the same idea as the file object's fileno(), but the socket isn't a file object and doesn't have its own buffer. (On UNIX you can make a file object from a socket, but it's difficult to make that work both properly and efficiently with select().) The result from socket fileno() is a file descriptor on UNIX, but it isn't necessarily so on other operating systems. You can get file descriptors directly if you use the posix.open() function, (A.K.A. os.open().) ------------------------------------------------------------- Is there an easy way given an internal webpage to cycle through all the links on the page and find which ones are broken? http://www.faqts.com/knowledge-base/view.phtml/aid/5939 ------------------------------------------------------------- Fiona Czuczman Jeremy Hylton, Dan Gindikin Look at Tools/webchecker in the Python distribution. Check out linkchecker.sourceforge.net ## Edited Entries ############################################## ------------------------------------------------------------- How do I get the full pathname of a module? Let's say I use 'import' to load a module. How can I find the location of its *.py or *.pyc file? http://www.faqts.com/knowledge-base/view.phtml/aid/5918 ------------------------------------------------------------- Rolf Freimuth, Fiona Czuczman Mike Fletcher def modulePath( module ): import os return os.path.abspath( module.__file__ )