## Python’da Küme Kullanımı

Aralık 14th, 2011 § Yorum yok

```from sets import Set
students = Set(['Joe', 'Jane', 'Mary', 'Pete'])
programmers = Set(['Caroline', 'Tom', 'John', 'Pete'])
designers = Set(['Paul', 'Mary', 'Susan', 'Pete'])

print "These are the students:"
for student in students:
print student,
print "!"

print "There are", len(students), "students."
print

people = students | programmers | designers           # union
print "All people:", people
print

student_designers = students & designers              # intersection
print "Students who also design:", student_designers
print

non_design_students = students - designers            # difference
print "Students who do not design:", non_design_students
```

#### Küme İşlemleri

 len(s) cardinality of set s x in s test x for membership in s x not in s test x for non-membership ins s.issubset(t) test whether every element in s is in t s.issuperset(t) test whether every element in t is in s s | t Union: new set with elements from both s and t s & t Intersection: new set with elements common to s and t s - t Difference: new set with elements in s but not in t s ^ t Symmetric difference: new set with elements in either s or t but not both s.copy() new set with a shallow copy of s s.add(x) add element x to set s s.discard(x) remove element x from set s s.clear() remove all elements from set s s == t test whether sets s and t are equal s != t test whether sets s and t are not equal

#### Küme Kopyalamak ve Karşılaştırmak

Kümeyi kopyalamak için copy() kullanılmalıdır.

```from sets import Set
odd = Set([1,3,5])
even = Set([2,4,6])
copy1 = odd
copy2 = odd.copy()

>>> print "Are copy1 and odd the same?", copy1 is odd
Are copy1 and odd the same? True
>>> print "Are copy1 and odd equal?", copy1 == odd
Are copy1 and odd equal? True
>>> print "Are copy2 and odd the same?", copy2 is odd
Are copy2 and odd the same? False
>>> print "Are copy2 and odd equal?",copy2 == odd
Are copy2 and odd equal? True

>>> print odd
Set([1, 3, 5, 7])
>>> print "copy1:", copy1
copy1: Set([1, 3, 5, 7])
>>> print "copy2:", copy2
copy2: Set([1, 3, 5])

```

### Ne yapıyorum ben!?

Python’da Küme Kullanımı başlıklı yazıyı okuyorsun.