파이썬 appned 함수와 extend 함수

lst1 = ['apple', 'banana' , 'tomato']
lst2 = ['strawberry', 'melon']

lst1.append(lst2)
print(lst1)

 

<< 결과값 >>

['apple', 'banana' , 'tomato', ['strawberry', 'melon']]

 

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****extend함수는 iterable 객체를 파라미터로 받음****

lst1 = ['apple', 'banana' , 'tomato']
lst2 = ['strawberry', 'melon']

lst1.extend(lst2)
print(lst1)

<< 결과값 >>

['apple', 'banana' , 'tomato', 'strawberry', 'melon']

 

 

 

<<< lst2가 문자열일 때 >>>>

lst1 = ['apple', 'banana' , 'tomato']
lst2 = 'melon'

lst1.append(lst2)
print(lst1)

<< 결과값 >>

['apple', 'banana' , 'tomato', 'melon']

 

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lst1 = ['apple', 'banana' , 'tomato']
lst2 = 'melon'

lst1.extend(lst2)
print(lst1)

<< 결과값 >>

['apple', 'banana' , 'tomato', 'm', 'e', 'l', 'o', 'n']