[Tutor] Releasing a File for Access

[Wayne Watson]

Title: Signature.html

Enclosed is a segment of a program which copies a txt file, but replaces the first line with a new one. The new one has a suffix of tmp. After it executed the code and exited the program normally (running out of code), I couldn't access the new tmp file. It was listed by Win XP, but I got a "file in use" messge. Do I have to exit differently to free the tmp file for inspection? def modify_txt_file(old_fname, new_event_date):     # Open old txt file and change first line with date & time of event     # renaming will occur a little later     #    old_fname is complete file name     #    new_event_date is date like: Tue 2008/03/... 14: ...     old_prefix = old_fname[0:19]     input_file=open(old_fname,'r')     #copy to temporary     output_file=open(old_prefix+'.tmp','w')     for j, line in enumerate(input_file):         if j == 0: # replace header             output_file.write("Event time: "+new_event_date)             continue         output_file.write(line) # copy other lines     output_file.close()     input_file.close()     print "modified txt file with event info"     # now copy tmp back to ...     return -- Wayne Watson (Watson Adventures, Prop., Nevada City, CA) (121.015 Deg. W, 39.262 Deg. N) GMT-8 hr std. time) Obz Site: 39° 15' 7" N, 121° 2' 32" W, 2700 feet "If voting made any difference they wouldn't let us do it." -- Mark Twain Web Page: <www.speckledwithstars.net/>

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