[Python] list append / extend

list형 append vs extend

 

1) list - append( )

x = [1, 2, 3]
y = [4, 5]
x.append(y)
print(x)
# [1, 2, 3, [4, 5]]

2) list - extend( )

x = [1, 2, 3]
y = [4, 5]
x.extend(y)
print(x)
# [1, 2, 3, 4, 5]