python 中列表和字符串的相互转换

 

001、

>>> test1 = ["aaa", "bbb", "ccc", "ddd"]
>>> test1
['aaa', 'bbb', 'ccc', 'ddd']
>>> '_'.join(test1)              ## 列表转换为字符串
'aaa_bbb_ccc_ddd'
>>> test2 = '_'.join(test1)
>>> test2
'aaa_bbb_ccc_ddd'
>>> test2.split(sep = "_")       ## 字符串转换为列表
['aaa', 'bbb', 'ccc', 'ddd']