[python3.7]列表

>>> a
['aaa']
>>> b=['aasd','sss','cc']
>>> a.extend(b)
>>> a
['aaa', 'aasd', 'sss', 'cc']
>>> a.extend('eee')
>>> a
['aaa', 'aasd', 'sss', 'cc', 'e', 'e', 'e']
>>>