Marc 'BlackJack' Rintsch wrote: > In <[EMAIL PROTECTED]>, rbt wrote: > >> What's a good way to compare values in dictionaries? > > Look them up and then compare!? ;-) > >> I want to find >> values that have changed. I look for new keys by doing this: >> >> new = [k for k in file_info_cur.iterkeys() if k not in >> file_info_old.iterkeys()] >> if new == []: >> print new, "No new files." >> else: >> print new, "New file(s)!!!" >> >> My key-values pairs are filepaths and their modify times. I want to >> identify files that have been updated or added since the script last ran. > > This looks up each `key` from the `new` dictionary and compares the value > with the `old` one. If it's not equal or the key is not present in `old` > the key is appended to the `result`:: > > def new_and_changed_keys(old, new): > result = list() > for (key, value) in new: > try: > if old[key] != value: > result.append(key) > except KeyError: > result.append(key) > return result > > Ciao, > Marc 'BlackJack' Rintsch
Thanks Marc! I changed this line: for (key, value) in new: To this: for (key, value) in new.iteritems(): And, it works great. Thanks again. -- http://mail.python.org/mailman/listinfo/python-list
