#  int() float()
# str()

a = 1
b = '1'

print( a+a , b+b )

a= str(a)
b = int(b)
print(a+a,b+b)



a=  (1,2,3,4,5)

b=list(a)
print(b)


a=[1,2,3,4]
b=['a','b','c','d']

d = dict(zip(a,b))
print(d)

list2=[]
list1=list()
print(list2)
print(list1)

#집합   - 순서가 없고 중복 없음

a=[1,2,3,3,3,2,4,5,1,2,3,56,4,6]

print(a.count(3))
b= set(a)
print(b)
b= list(b)
print(b)