python3中string和bytes之间的转换

mystr = 'baidu.com'
print(type(mystr)) # <class 'str'>

mybyte = mystr.encode('utf-8')
print(type(mybyte)) # <class 'bytes'>

mybyte_str = mybyte.decode('utf-8')
print(type(mybyte_str)) # <class 'str'>
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