Base 64 encode a JSON variable in Python

In Python 3.x you need to convert your str object to a bytes object for base64 to be able to encode them. You can do that using the str.encode method:

>>> import json>>> import base64>>> d = {"alg": "ES256"} >>> s = json.dumps(d)  # Turns your json dict into a str>>> print(s){"alg": "ES256"}>>> type(s)<class 'str'>>>> base64.b64encode(s)Traceback (most recent call last):  File "<stdin>", line 1, in <module>  File "/usr/lib/python3.2/base64.py", line 56, in b64encode    raise TypeError("expected bytes, not %s" % s.__class__.__name__)TypeError: expected bytes, not str>>> base64.b64encode(s.encode('utf-8'))b'eyJhbGciOiAiRVMyNTYifQ=='

If you pass the output of your_str_object.encode('utf-8') to the base64 module, you should be able to encode it fine.

You could encode the string first, as UTF-8 for example, then base64 encode it:

data = '{"hello": "world"}'enc = data.encode()  # utf-8 by defaultprint base64.encodestring(enc)

This also works in 2.7 :)

Here are two methods worked on python3encodestring is deprecated and suggested one to use is encodebytes

import jsonimport base64with open('test.json') as jsonfile:    data = json.load(jsonfile)    print(type(data))  #dict    datastr = json.dumps(data)    print(type(datastr)) #str    print(datastr)    encoded = base64.b64encode(datastr.encode('utf-8'))  #1 way    print(encoded)    print(base64.encodebytes(datastr.encode())) #2 method