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The '&' operator can be used in this operation. Set victims will contain the common elements of A and B. difference(s) Method: Returns a set containing all the elements which are existing in the first set but not present in the second set. We can use '-' operator here.
To check if the Set contains an element in Python, use the in keyword, which returns True if the specified Set contains an element and False otherwise. The in keyword checks if the item is present in a sequence like a list, range, string, set, etc.
So the answer is that set objects do not use + and * because those operators are conventionally used for operations that do not make sense for the set data type.
Python Set Operations: Union, Intersection, and Difference – With 10 Examples.
Yes, but it also means hash(b) == hash(x), so equality of the items isn't enough to make them the same.
That's right. You could try it in the interpreter like this:
>>> a_set = set(['a', 'b', 'c'])
>>> 'a' in a_set
True
>>>'d' in a_set
False
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
Sets behave different than dicts, you need to use set operations like issubset():
>>> k
{'ip': '123.123.123.123', 'pw': 'test1234', 'port': 1234, 'debug': True}
>>> set('ip,port,pw'.split(',')).issubset(set(k.keys()))
True
>>> set('ip,port,pw'.split(',')) in set(k.keys())
False
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