Python 3.7 TypeError: a bytes-like object is required, not 'str'

Question

我有这两个字符串：

client_id = "id_str"
client_secret = "secret_str"

而且我必须像这样通过它们：

def getToken(code, client_id, client_secret, redirect_uri):
    body = {
        "grant_type": 'authorization_code',
        "code" : code,
        "redirect_uri": redirect_uri,
        "client_id": client_id,
        "client_secret": client_secret
    }

    encoded = base64.b64encode("{}:{}".format(client_id, client_secret))
    headers = {"Content-Type" : HEADER, "Authorization" : "Basic {}".format(encoded)} 

    post = requests.post(SPOTIFY_URL_TOKEN, params=body, headers=headers)
    return handleToken(json.loads(post.text))

但是当我这样做时我得到了错误：

    encoded = base64.b64encode("{}:{}".format(client_id, client_secret))
  File "/usr/local/lib/python3.7/base64.py", line 58, in b64encode
    encoded = binascii.b2a_base64(s, newline=False)
TypeError: a bytes-like object is required, not 'str'

如何为 Python 3.7 解决这个 encoding/formatting？

ps：我没有看到此 answer 地址格式 {} 以及编码。

Answer 1

换行

encoded = base64.b64encode("{}:{}".format(client_id, client_secret))

至

encoded = base64.b64encode("{}:{}".format(client_id, client_secret).encode())

根据 documentation:

base64.b64encode(s, altchars=None)

Encode the bytes-like object s using Base64 and return the encoded bytes.

关于您的异议：

the linked answer does not address formatting

实际上你的问题与格式化无关，因为format()只是returns一个字符串，但是b64encode需要一个类似字节的对象，而不是字符串。

Python 3.7 TypeError: a bytes-like object is required, not 'str'

Python 3.7 TypeError: a bytes-like object is required, not 'str'

base64

python-3.x