[Tutor] Need Help Modifying a wxPython GUI (scrolling display and logging)

[Prasad, Ramit]

Matt D wrote:
> > There are other ways a script might change the current directory.  For
> > example, some naive scripts use os.chdir()
> >
> > But how is it you don't know what the current directory was when the
> > code ran?   A simply pwd can tell you, if your prompt doesn't already
> > reveal it.
> >
> >
> hey i found the logfile.  just took a few minutes of looking round.  the
> file is logged all out of order so i have some work to do on that
> formatting issue.  if you have a sec can you take a look at my code please?
> 
> def update(self, field_values):
> 
>     	#  logger code---------------
>         #  first write the CURRENT date/time
> 		self.logfile.write('%s,'%(str(strftime("%Y-%m-%d %H:%M:%S", gmtime()))))
> 		#  loop through each of the TextCtrl objects
> 		for k,v in self.fields.items():
>             #  get the value of the current TextCtrl field
> 			f = field_values.get(k, None)
> 			if f:
>                 #output the value with trailing comma
> 				self.logfile.write('%s,'%(str(f)))
> 				self.logfile.write('\n')
> 		#end logger code ----------------
> 
>         #if the field 'duid' == 'hdu', then clear all the fields
> 		if field_values['duid'] == 'hdu':
> 			self.clear()
> 		#loop through all TextCtrl fields storing the key/value pairs in k, v
> 		for k,v in self.fields.items():
> 			# get the pickle value for this text control
> 			f = field_values.get(k, None)
> 			# if the value is empty then set the new value
> 			if f:
> 				v.SetValue(f)
> 
> 
> When i open the .csv file the fields are all out of order.  what i want
> is have them all in one row beginning with the date/time.  and idea?
> Thanks!

Everything Dave Angel said applies.

You can sort the keys by doing and sorting the keys and then logging.
That should ensure field order.

for k in sorted(self.fields):
    v = self.fields[k]


Also note, that unless you do self.logfile.close() it is not guaranteed
that the data is being written to file. I prefer to use the following
idiom for Python 2.6+ (might be in 2.5, but not sure offhand when it was added).

with open('filename.txt', 'a') as f:
    # write data


~Ramit


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