網上的Base64解碼器

I am trying to use json.loads() in python

I get the error:

the JSON object must be str, not 'bytes'

a = {'h': '123', 'w': '12345', 'data': "b'eyJod2lkIjpwomfcwpvepovnepovqrepniLLKJAMSNDMSNDMAWEFMOEDAad='"}a.update(json.loads(base64.b64decode(a['data'])))

Here the 'data' portion of a was being loaded in as a json dump with b64encoding.

'data':base64.b64encode(json.dumps(test).encode()); where test = some string eg('epovqrepniLLKJAMSNDMSNDMAWEFMOEDAad=')

I have tried using:

a.update(json.loads(base64.b64decode(a['data']).decode('utf-8')))

Giving me a 'utf-8' codec can't decode bytes in position: invalid continuation byte

I have also tried using decodebytes instead of b64decode to no avail.

I'd really appreciate any help!

It´s not a big deal to mimic the websocket connection made to bittrex from www, using chromes dev tools:

GET https://socket.bittrex.com/signalr/negotiate?clientProtocol=1.5&connectionData=%5B%7B%22name%22%3A%22c2%22%7D%5D&_=1524596108843

This return a token

"ConnectionToken":"gbLsm8C6Jck1mQTTFjmuIv5qgUuMZz/kXU1s+fAnjnWqUFQocNBfp3VOrd/y0acxWL5Fv7MZ54heRddLYZS+EMhLnaPPQiSZblvgJPCbLKqZTIkb"

That needs to be used with:

wss://socket.bittrex.com/signalr/connect? transport=webSockets&clientProtocol=1.5&connectionToken=

Then there are some commands sent to the websocket:

{"H":"c2","M":"SubscribeToSummaryLiteDeltas","A":[],"I":0}{"H":"c2","M":"SubscribeToExchangeDeltas","A":["BTC-TRX"],"I":1}{"H":"c2","M":"QueryExchangeState","A":["BTC-TRX"],"I":2}

Which makes bittrex stream data about the selected ticker, BTC-TRX. But here´s where things start to get odd:

Here´s what frames look like:

    {"C":"d-C95D047D-E,0|OHjr,0|OHjs,2|CW,6116","M":[{"H":"C2","M":"uE","A":["dY+7DsIwDEX/xXOI7NiOnYwwg0TpwENd+QnUfydtBQKp9ear4yPfFxyhwr4/7PruCgFOUJO4SoA71McL+lsLAnRQMeI0xhzg3EKXQpEFzUvyMayhiWaUOJtqLCZKonkcAly+cvyXl/lCHKOyaxbDdbUuamMXzhELk5lvvKE+s0yoyWPKVIhwg81LO8OcNCZOGQn5g9IPSuyLtq1To2drNIxv"]}]}

It certainly looks like base64, but decoding it gives me something like:

u���0E��s��؎��0�D��C]� �'m����#��¾?���NP��J�;���[tP1�4���B�B��K�1���f�8�j,&J�y\�r����B��k�u�.jc���o��>�L��c�T�p��K;Ü4&N ���J싶�S�gk4�o

Did anyone figure out how to turn this into readable data?

I can able to fetch attachment by passing userId, nessageID and attachmentID(For reference:

Google Developer

Cocoa Docs

I'm getting response as like below.

{ "data": "JVBERi0xLjYKJeTjz9IKMSAwIG9iagpbL1BERi9JbWFnZUIvSW1hZ2VDL0l...." "size": 629163}

I want to decode data to save in my app local and later i will display .

I can successfully downloaded and saved in local(document folder) but not able to see the content in the attachment please make me perfect.

I have a base64 string like this = "pCZXOVjpnlePyDk6znZrSw==" i need a encoder/decoder to convert it to decimal string like this = "84587163248712923874"
Is there any codec that do it?

In Intersystem Cache i export some GLOBALs using

$system.OBJ.Export("GCL.GLB", "C:\GCL.xml")

Now there is a field that is BASE64 encoded, for example the following row:

<Node><Sub>2</Sub><DataBase64>AgEDATECAQgBU2luZ2xlBATD+QQEkH4EBCD9BAQcAgIEBQE2RE4CAQIBAgECAQIBYwEJAWFmd2V6aWcCASoBX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwIBFQFIb2dlIEhvbmRzdHJhYXQgMTE1EwE3NDEzIENFLCBERVZFTlRFUgIBBQExQVMFATVBQwYBMzhHQg0BNjM4ODEsMzU4NjM=</DataBase64></Node>

When i decode the base64 data in UTF-8 i do not get all data, i heard that it needs to be decoded in IBM437 but then i still miss the first 3 fields which should be 3 numbers with a length of 5

Does someone know which encoding is right or how i can see what encoding i need for this?

Thanks