github 上看来下 好像都是用 oauth 的

def auth(self, username=None, password=None, refresh_token=None):
"""Login with password, or use the refresh_token to acquire a new bearer token"""

url = 'https://oauth.secure.pixiv.net/auth/token'
headers = {
'App-OS': 'ios',
'App-OS-Version': '10.3.1',
'App-Version': '6.7.1',
'User-Agent': 'PixivIOSApp/6.7.1 (iOS 10.3.1; iPhone8,1)',
}
data = {
'get_secure_url': 1,
'client_id': 'bYGKuGVw91e0NMfPGp44euvGt59s',
'client_secret': 'HP3RmkgAmEGro0gn1x9ioawQE8WMfvLXDz3ZqxpK',
}

if (username is not None) and (password is not None):
data['grant_type'] = 'password'
data['username'] = username
data['password'] = password
elif (refresh_token is not None) or (self.refresh_token is not None):
data['grant_type'] = 'refresh_token'
data['refresh_token'] = refresh_token or self.refresh_token
else:
raise PixivError('[ERROR] auth() but no password or refresh_token is set.')

r = self.requests_call('POST', url, headers=headers, data=data)
if (r.status_code not in [200, 301, 302]):
if data['grant_type'] == 'password':
raise PixivError('[ERROR] auth() failed! check username and password.\nHTTP %s: %s' % (r.status_code, r.text), header=r.headers, body=r.text)
else:
raise PixivError('[ERROR] auth() failed! check refresh_token.\nHTTP %s: %s' % (r.status_code, r.text), header=r.headers, body=r.text)

token = None
try:
# get access_token
token = self.parse_json(r.text)
self.access_token = token.response.access_token
self.user_id = token.response.user.id
self.refresh_token = token.response.refresh_token
except:
raise PixivError('Get access_token error! Response: %s' % (token), header=r.headers, body=r.text)

# return auth/token response
return token