Python s in set operator

Question

I m a little confused about the python in operator for sets   If I have a set s and some instance b  is it true that b in s means  is there some element x in s such that b    x is true

User · Answer

Yes it can mean so  or it can be a simple iterator  For example  Example as iterator   a set   1   2   3    for x in a   print   This set contains the value     x    Similarly as a check   a set  ILovePython   if  I  in a   print   There is an  I  in here     edited  edited to include sets rather than lists and strings

User · Answer

Yes  but it also means hash b     hash x   so equality of the items isn t enough to make them the same

User · Answer

That s right  You could try it in the interpreter like this    gt  gt  gt  a set   set   a    b    c      gt  gt  gt   a  in a set True   gt  gt  gt  d  in a set False

User · Answer

Sets behave different than dicts  you need to use set operations like issubset      gt  gt  gt  k   ip    123 123 123 123    pw    test1234    port   1234   debug   True   gt  gt  gt  set  ip port pw  split       issubset set k keys     True  gt  gt  gt  set  ip port pw  split       in set k keys    False

User · Answer

Strings  though they are not set types  have a valuable in property during validation in scripts   yn   input  Are you sure you want to do this     if yn in  yes        accepts  y  OR  e  OR  s  OR  ye  OR  es  OR  yes      return True return False   I hope this helps you better understand the use of in with this example

[python] Python's "in" set operator

Examples related to python