[python]split_join

# 결과값
hello, world!
hello, python!
['hello,', 'world!\nhello,', 'python!']
['hello,', 'world!\nhello, python!']
['hello', '', 'world!', 'hello', '', 'python!']
['1', '2', '3', '4']
1+2+3+4
10​

import re

# split
str01 = 'hello, world!\nhello, python!'
print(str01)

arr01 = str01.split(' ')
print(arr01)

arr02 = str01.split(' ', 1)
print(arr02)

arr03 = re.split(r'[\s]|[,]', str01)
print(arr03)

# join
arr04 = ['1','2','3','4']
print(arr04)

a = '+'.join(arr04)
print(a)
print(eval(a))