Convert byte[] to base64 and ASCII in Python

Question

How do I to convert and array of byte to base64 string and/or ASCII.

I can do this easily in C#, but can't seem to do this in Python

Answer 1

The simplest approach would be: Array to json to base64:

import json import base64  data = [0, 1, 0, 0, 83, 116, -10] dataStr = json.dumps(data)  base64EncodedStr = base64.b64encode(dataStr.encode('utf-8')) print(base64EncodedStr)  print('decoded', base64.b64decode(base64EncodedStr)) 

Prints out:

>>> WzAsIDEsIDAsIDAsIDgzLCAxMTYsIC0xMF0= >>> ('decoded', '[0, 1, 0, 0, 83, 116, -10]')  # json.loads here ! 

... another option could be using bitarray module.

Answer 2

This honestly should be all that you need: https://docs.python.org/3.1/library/base64.html

In this example you can see where they convert bytes to base64 and decode it back to bytes again:

>>> import base64 >>> encoded = base64.b64encode(b'data to be encoded') >>> encoded b'ZGF0YSB0byBiZSBlbmNvZGVk' >>> data = base64.b64decode(encoded) >>> data b'data to be encoded' 

You may need to first take your array and turn it into a string with join, like this:

>>> my_joined_string_of_bytes = "".join(["my", "cool", "strings", "of", "bytes"]) 

Let me know if you need anything else. Thanks!