#LIST
a=[1,2,3,4,5]
b=[4,3,2,1,6]
print(a,'\n')
print(b,'\n')

a.append(7)
print(a)

print(a[3])

index=4
a.insert(index,10)
print(a)

print(len(a))

print(a+b)

print(a*3)

print(a[2:4])

#Tuples
c=(1,2,3,4,5)
d=(7,8,9,10)
print(c[:2])
print(c*3)
print(c+d)
del(c)
print(3 in d )
print(5 in d)

#dictonaries

c={1:'JAN',2:'FEB',3:'MAR'}
print(c[1])
c[1]='FEB'
print(c)
c[1]='JAN'
print(1in c)
print('JAN' in c)
print(c)
print(c.get(3))

#SETS

empty_set=set()

nums = {1, 2, 1, 3, 1, 4, 5, 6}

print(nums)

nums.add(-7)

nums.remove(3)

print(nums)

first = {1, 2, 3, 4, 5, 6}

second = {4, 5, 6, 7, 8, 9}

print(first | second)

print(first & second)

print(first - second)

print(second - first)

print(first ^ second)

#STRINGS

str=('hello world')
print(str*3)
print(str+'welcome!')
print(str[3])
print(str[2:])
print(str[2:4])