Python - can't import Set from sets (“no module named sets”)

Question

I\'m trying to learn python and I was trying to write something simple. I am developing under Pydev (Eclipse) using OS X 10.8. I installed python 3.2 using the 64bits .dmg i

Answer 1

You don't need the sets module anymore. set is a built-in class in Python 3 and can be used without import.

my_set = set()

Answer 2

you don't need to use

from sets import Set
engineers = Set(['John', 'Jane', 'Jack', 'Janice'])

above is Deprecated since version 2.6:

you can use below code above 2.6 version

engineers = set(['John', 'Jane', 'Jack', 'Janice'])
programmers = set(['Jack', 'Sam', 'Susan', 'Janice'])
managers = set(['Jane', 'Jack', 'Susan', 'Zack'])
employees = engineers | programmers | managers  
print(employees)

Answer 3

In every recent python version sets are builtin as set and Python 3 got rid of the deprecated sets module altogether.

If you wanted to ensure that the code also works with ancient versions you could do something like this though:

try:
    set
except NameError:
    from sets import Set as set

If you need to run old code and don't want to change it (bad!):

try:
    from sets import Set
except ImportError:
    Set = set