days = ["Mon", "Tue", "Thur", "Fri", "Sat"]
emotion = ["happy", "sad","tired","angry"]
num1 = [1,2,3]
num2 = [4,5,6]
num3 = [1,2,3,4,5,6,7,8,9,10,11]
# common operation
print("Mon" in days) # True
print("Mon" not in days) # Flase
print(days[3]) # Fri
print(len(days)) # 5
print(days.count("Mon")) # 1
print(num1+num2) # [1, 2, 3, 4, 5, 6]
print(num1*2) # [1, 2, 3, 1, 2, 3]
# Mutable operaions : 값을 바꿀 수 있다.
num1[0]=7
print(num1) # [7, 2, 3]
num1[0:3]='888'
print(num1) # [7, 2, 3]
del num1[0:1]
print(num1) # [8, 8]
print(num3[0:10:2]) # [1, 3, 5, 7, 9]
num3[0:10:2]= [3,3,3,3,3]
print(num3[0:10:2]) # [3, 3, 3, 3, 3]
print(list('abc')) # ['a', 'b', 'c']
print(list((1,2,3))) # [1,2,3]
print([x for x in '123']) # ['1','2','3']
days.append("Sun")
print(days) # ['Mon', 'Tue', 'Thur', 'Fri', 'Sat', 'Sun']
days.reverse()
print(days) # ['Sun', 'Sat', 'Fri', 'Thur', 'Tue', 'Mon']
num3.clear()
print(num3) # []
num3=num2.copy()
print(num3)
# Immutable : 값을 바꿀 수 없다.
