How to change a base64 value which is in string to byte?

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I have a variable which is in bytes for example:

k=b'gAAAAABfGakqAaKNJwYTmdsERYzv9_o9rAOpwPjRSGYxBIRKHYfUgh7CtMrZpJMrxkH8bc0dami_D2tOO8EOHNZkZiHWZUTvmw=='

<class 'bytes'> now if I convert this to string using str(k) value of k:

b'gAAAAABfGakqAaKNJwYTmdsERYzv9_o9rAOpwPjRSGYxBIRKHYfUgh7CtMrZpJMrxkH8bc0dami_D2tOO8EOHNZkZiHWZUTvmw=='

<class 'str'>

Now if i need the original byte version of the variable how do i convert it? Because if I use bytes(k,'encoding') i get the bytes version of the new string and the value changes to

b"b'gAAAAABfGawb3lL2uGxUSlKw4ujOts_7TMGtXBlbDddhBZ_0VgHylkpbrKtFqtU0CDz4gaenzDIuNTd3zM9ydksOnd6nQaz9Sw=='"

<class 'bytes'> Can someone tell me how can I get back the original data type from the string value of the variable?

cryptography encryption python
1 Answers

Instead of casting the bytes as a string, decode it in utf-8:

In [9]: k=b'gAAAAABfGakqAaKNJwYTmdsERYzv9_o9rAOpwPjRSGYxBIRKHYfUgh7CtMrZpJMrxkH8bc0dami_D2tOO8EOHNZkZiHWZUTvmw=='                          

In [10]: s = k.decode('utf-8')                                                                                                             

In [11]: s                                                                                                                                 
Out[11]: 'gAAAAABfGakqAaKNJwYTmdsERYzv9_o9rAOpwPjRSGYxBIRKHYfUgh7CtMrZpJMrxkH8bc0dami_D2tOO8EOHNZkZiHWZUTvmw=='

In [12]: bytes(s, 'utf-8')                                                                                                                 
Out[12]: b'gAAAAABfGakqAaKNJwYTmdsERYzv9_o9rAOpwPjRSGYxBIRKHYfUgh7CtMrZpJMrxkH8bc0dami_D2tOO8EOHNZkZiHWZUTvmw=='
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