Evernote - OAuth访问令牌 - Python

Question

我正在通过Evernote OAuth文档。无法获得临时令牌。它在收到帮助here后得到解决。现在，在接收Access令牌时触及此流程的最后一步。你能不能让我知道这里有什么潜在的问题？

它遵循类似下面的第一个来检索访问令牌。不确定我是否有任何遗漏。

import time
import base64
import random
import uuid
import urllib
import collections
import urllib.parse
import hmac
import hashlib
import binascii
import requests

def escape(s):
    return urllib.parse.quote(s, safe='~')
def get_nonce():
    return uuid.uuid4().hex

def stringify_parameters(parameters):
    output = ''
    ordered_parameters = {}
    ordered_parameters =collections.OrderedDict(sorted(parameters.items()))

    counter = 1
    for k, v in ordered_parameters.items():
        output += escape(str(k)) + '=' + escape(str(v))
        if counter < len(ordered_parameters):
            output += '&'
            counter += 1

    return output

oauth_parameters={
'oauth_timestamp': str(int(time.time())),
'oauth_signature_method': "HMAC-SHA1",
'oauth_version': "1.0",
'oauth_nonce': get_nonce(),
'oauth_consumer_key': 'xxxxx',
'oauth_callback':'http://localhost'
 }

string_parameters=stringify_parameters(oauth_parameters)
secret='3************f'

### below portion of the code will return temp_token
key = (escape(secret)+'&').encode()
message = ('GET&' + escape('https://sandbox.evernote.com/oauth') + '&' + escape(string_parameters)).encode()
signature = hmac.new(key, message, hashlib.sha1).digest()
oauth_parameters['oauth_signature'] = base64.b64encode(signature).decode()

print(stringify_parameters(oauth_parameters))

res = requests.get('https://sandbox.evernote.com/oauth?' + stringify_parameters(oauth_parameters))
print(res.text)
####

##login to the url below based on the temp_token from above
##https://sandbox.evernote.com/OAuth.action?oauth_token=xxxxx.1652F9812D6.687474703A2F2F6C6F63616C686F7374.3A695C3760E6EFB92B3AB6033222E9D7

## after successful authorization from user, page is redirected along with 'oauth_verifier' value
##http://localhost/?oauth_token=xxxxx.1652F9812D6.687474703A2F2F6C6F63616C686F7374.3A695C3760E6EFB92B3AB6033222E9D7&oauth_verifier=1808C99D6868D17A89871E9290B334D6&sandbox_lnb=false

###error part - below doesn't work while retrieving the access token.

oauth_parameters={
'oauth_consumer_key': 'xxxxx',
'oauth_token': 'xxxxx.1652F9812D6.687474703A2F2F6C6F63616C686F7374.3A695C3760E6EFB92B3AB6033222E9D7',
'oauth_verifier':'1808C99D6868D17A89871E9290B334D6',
'oauth_nonce': get_nonce(),
'oauth_signature_method':'HMAC-SHA1',
'oauth_timestamp': str(int(time.time())),
'oauth_version': '1.0'
}

string_parameters=stringify_parameters(oauth_parameters)

key = (escape(secret)+'&').encode()
message = ('GET&' + escape('https://sandbox.evernote.com/oauth') + '&' + escape(string_parameters)).encode()
signature = hmac.new(key, message, hashlib.sha1).digest()

oauth_parameters['oauth_signature'] = 
base64.b64encode(signature).decode()

res = requests.get('https://sandbox.evernote.com/oauth?' + 
stringify_parameters(oauth_parameters))
print(res.text)

Answer 1

在不知道错误消息是什么（如果有的话）的情况下，我唯一能想到的是oauth_verifier是否被正确复制。其他一切看起来应该可以正常工作。