a = {'python',256,('sbvsb',251)}
print(a)
b = set('python')
print(b)
c = {'python',256,'python',256}
print(c)
>>>'p' in {‘p','y','t','h'}
True
>>>{‘p','y'} = {‘p','y','t','h'}
True
>>>ls = [‘p','p','y','y','t','h']
>>>s = set(ls)
{‘p','y','t','h'}
>>>ls = list(s)
[‘p','y','t','h']