On Sun, Nov 24, 2013 at 11:03 AM, Reuben <[email protected]> wrote: > Hi, > > ########################################## >>>> >>>> new_dict = {'a':10, 'b' :20, 'c': 30,'d' : 40} >>>> >>>> >>>> print new_dict > {'a': 10, 'c': 30, 'b': 20, 'd': 40} >>>> > > > ######################################### > > > From the above output, I see key 'c' is at third position during input, but > while displaying the output it is displayed at second position > > Although, I dont see any impact of it since we mainly refer to dictionary > values only using "keys" -- but just for curiosity why is this position > change? > > Regards, > Reuben > > _______________________________________________ > Tutor maillist - [email protected] > To unsubscribe or change subscription options: > https://mail.python.org/mailman/listinfo/tutor > The key is the way to the value. Depending on the implementation, python might find the value by different algorithms. Sometimes people call dictionaries 'hashes', which I believe refers to a method of indexing that does some algorithm on the key to get the value location. This is for speed and for space savings in memory.
So, sometimes you might see a dictionary displayed in the order you entered it, but sometimes not. -- Joel Goldstick http://joelgoldstick.com _______________________________________________ Tutor maillist - [email protected] To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
