[Tutor] problem with using set
d at davea.name
Thu Oct 13 18:43:54 CEST 2011
On 10/13/2011 10:44 AM, Praveen Singh wrote:
> set(['c', 'f', 'i', 'm', 'o', 's', 'r', 't'])
>>>> print ''.join(set(a))
> When i print "Hello", i get the output as "helo"(in same sequence) but when
> i write "microsoft" i get this-"cfimosrt". So, it means i can't predict the
> outcome of set(a)??
The set() function converts its input into a set. A set is not ordered
in the usual way, but in such a way as to rapidly find whether a
particular item exists already in the set, and insert it if not.
Inserting a new item might totally rearrange the existing ones, set
doesn't promise anything at all about the order. (Dictionaries are
similar, but while set has only a key, dict has both key and value)
A set has no value to the assignment as stated. Stick to lists.
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