自适应的逗号

>>> name = [
    'python',
    'java',
    'javascript' # 缺少逗号
    'hello'
]
>>> names
['python','java','javascripthello']

>>> my_str = (
    'This is a super long string'
    'across multiple lines'
    'no backslash characters'
)

>>> my_str
'This is a super long stringacross multiple linesno backslash characters'