Python Gmail API'不是JSON可序列化的'

Question

我想使用Gmail API通过Python发送电子邮件.Everythings应该没问题,但我仍然得到错误"发生错误:b'Q29udGVudC1UeXBlOiB0ZXh0L3BsYWluOyBjaGFyc2V0PSJ1cy1hc2NpaSIKTUlNRS ..."这是我的代码:

import base64
import httplib2

from email.mime.text import MIMEText

from apiclient.discovery import build
from oauth2client.client import flow_from_clientsecrets
from oauth2client.file import Storage
from oauth2client.tools import run_flow


# Path to the client_secret.json file downloaded from the Developer Console
CLIENT_SECRET_FILE = 'client_secret.json'

# Check https://developers.google.com/gmail/api/auth/scopes for all available scopes
OAUTH_SCOPE = 'https://www.googleapis.com/auth/gmail.compose'

# Location of the credentials storage file
STORAGE = Storage('gmail.storage')

# Start the OAuth flow to retrieve credentials
flow = flow_from_clientsecrets(CLIENT_SECRET_FILE, scope=OAUTH_SCOPE)
http = httplib2.Http()

# Try to retrieve credentials from storage or run the flow to generate them
credentials = STORAGE.get()
if credentials is None or credentials.invalid:
  credentials = run_flow(flow, STORAGE, http=http)

# Authorize the httplib2.Http object with our credentials
http = credentials.authorize(http)

# Build the Gmail service from discovery
gmail_service = build('gmail', 'v1', http=http)

# create a message to send
message = MIMEText("Message")
message['to'] = "myemail@gmail.com"
message['from'] = "python.api123@gmail.com"
message['subject'] = "Subject"
body = {'raw': base64.b64encode(message.as_bytes())}

# send it
try:
  message = (gmail_service.users().messages().send(userId="me",     body=body).execute())
  print('Message Id: %s' % message['id'])
  print(message)
except Exception as error:
  print('An error occurred: %s' % error)

Answer 1

我有同样的问题,我假设你使用的是Python3我在另一篇文章中发现了这个问题,建议是做以下事情:

raw = base64.urlsafe_b64encode(message.as_bytes())
raw = raw.decode()
body = {'raw': raw}

请访问:https: //github.com/google/google-api-python-client/issues/93

Answer 2

过去一天，我一直在（过时的）Gmail API 文档和 stackoverflow 中苦苦挣扎，希望以下内容对其他 Python 3.8 人员有所帮助。如果对你有帮助，请点赞！

import os
import base64
import pickle
from pathlib import Path
from email.mime.text import MIMEText
import googleapiclient.discovery
import google_auth_oauthlib.flow
import google.auth.transport.requests

def retry_credential_request(self, force = False):
    """ Deletes token.pickle file and re-runs the original request function """
    print("? Insufficient permission, probably due to changing scopes.")
    i = input("Type [D] to delete token and retry: ") if force == False else 'd'
    if i.lower() == "d":
        os.remove("token.pickle")
        print("Deleted token.pickle")
        self()

def get_google_api_credentials(scopes):
    """ Returns credentials for given Google API scope(s) """
    credentials = None
    # The file token.pickle stores the user's access and refresh tokens, and is
    # created automatically when the authorization flow completes for the first
    # time.
    if Path('token.pickle').is_file():
        with open('token.pickle', 'rb') as token:
            credentials = pickle.load(token)
    # If there are no (valid) credentials available, let the user log in.
    if not credentials or not credentials.valid:
        if credentials and credentials.expired and credentials.refresh_token:
            credentials.refresh(google.auth.transport.requests.Request())
        else:
            flow = google_auth_oauthlib.flow.InstalledAppFlow.from_client_secrets_file('credentials-windows.json', scopes)
            credentials = flow.run_local_server(port=0)
        # Save the credentials for the next run
        with open('token.pickle', 'wb') as token:
            pickle.dump(credentials, token)
    return credentials

def send_gmail(sender, to, subject, message_text):
    """Send a simple email using Gmail API"""
    scopes = ['https://www.googleapis.com/auth/gmail.compose']
    gmail_api = googleapiclient.discovery.build('gmail', 'v1', credentials=get_google_api_credentials(scopes))
    message = MIMEText(message_text)
    message['to'] = to
    message['from'] = sender
    message['subject'] = subject
    raw = base64.urlsafe_b64encode(message.as_bytes()).decode()
    try:
        request=gmail_api.users().messages().send(userId = "me", body = {'raw': raw}).execute()
    except googleapiclient.errors.HttpError as E:
        print(E)
        drive_api = retry_credential_request(send_gmail)
        return
    return request