things = set()
things.add("lithium")
print things
set(['lithium'])
things.add([1, 2, 3])
--------------------------------------------------------------------------- TypeError Traceback (most recent call last) <ipython-input-2-5c34a9426fc7> in <module>() ----> 1 things.add([1, 2, 3]) TypeError: unhashable type: 'list'
full_name = ('Charles', 'Darwin')
print full_name[0]
Charles
print len(full_name)
2
full_name[0] = 'Erasmus'
--------------------------------------------------------------------------- TypeError Traceback (most recent call last) <ipython-input-6-a7488b670820> in <module>() ----> 1 full_name[0] = 'Erasmus' TypeError: 'tuple' object does not support item assignment
names = set()
names.add(('Charles', 'Darwin'))
print names
set([('Charles', 'Darwin')])