如何在 python 脚本中获取多个分页 api？

How to get a multiple pagination api in a python script?

我学习python，我想使用api。
我制作小程序来获取信息，并阻止我的下一个程序。
我想制作一个程序来抓取我学校 api 上的所有学生。
问题是限制分页，我有 15 个用户，但不是全部。

我在文档上搜索如何使用。
我尝试使用循环"for"和特定的 api 参数获取信息：

The Link HTTP response header contains pagination data with first,
previous, next and last raw pages links when available, under the
format

link: http://xxx.intra.xxx.fr/v2/{Resource}?page=X+1; rel="next",
http://xxx.intra.xxx.fr/v2/{Resource}?page=X-1; rel="prev",
http://xxx.intra.xxx.fr/v2/{Resource}?page=1; rel="first",
http://xxx.intra.xxx.fr/v2/{Resource}?page=X+n; rel="last"

问题，我不知道要抓取所有页面中的所有信息，而不仅仅是第一页。
我的程序代码：

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import requests
import json
import sys
from sys import argv
from operator import itemgetter, attrgetter
import json
import os

UID = 'REDACTED_USER_ID'
SECRET = 'REDACTED_SECRET_KEY'

class CONST(object):
try:
campus = sys.argv[1]
month = sys.argv[2]
year = sys.argv[3]
except:
print("Error : aucun argument")
print('Usage:"campus_id" (EX:1)"month" (july)"year" (2016)')
exit()

d = {'grant_type': 'client_credentials', 'client_id': UID, 'client_secret': SECRET}
r = requests.post("https://api.intra.xxx.fr/oauth/token", data=d)
token = r.json()['access_token']
print(token)
h = {'Authorization': 'Bearer ' + token}
get_students = requests.get('https://api.intra.xxx.fr/v2/cursus/1/users?filter[primary_campus_id]=' + campus + '&filter[pool_month]=' + month + '&filter[pool_year]=' + year + '&sort=login', headers=h)

def __setattr__(self, *_):
pass

CONST = CONST()

def campus_id(CAMPUS, MONTH, YEAR, *args):
campus = CAMPUS
if str.isnumeric(campus):
return(campus)
else:
print("Error : campus_id requiert un chiffre")
print('Usage:"campus_id" (EX:1)"month" (july)"year" (2016)')
exit()

def pool_month(CAMPUS, MONTH, YEAR, *args):
month = MONTH
if str.isalpha(month):
return(month)
else:
print("Error : pool_month requiert un mois en lettre")
print('Usage:"campus_id" (EX:1)"month" (july)"year" (2016)')
exit()

def pool_year(CAMPUS, MONTH, YEAR, *args):
year = YEAR
if str.isnumeric(year):
return(year)
else:
print("Error : pool_year requiert au moins un chiffre")
print('Usage:"campus_id" (EX:1)"month" (july)"year" (2016)')
exit()

def get_infos(CAMPUS, MONTH, YEAR, *args):
if len(argv) != 4:
print('Wrongs arguments !')
print('Usage:"campus_id" (EX:1)"month" (july)"year" (2016)')
exit()

campus = campus_id(*argv[1:], *argv[2:], *argv[3:])
month = pool_month(*argv[1:], *argv[2:], *argv[3:])
year = pool_year(*argv[1:], *argv[2:], *argv[3:])
get_level = CONST.get_students
# print(json.dumps(get_level.json(),indent=4))
level = get_level.json()
tab = []
for item in level:
tab.append(item['login'])
chain = ' \
'.join(tab)
fichier = open("test.out","w")
fichier = open("test.out","a")
fichier.write(chain +"\
")
fichier.close()

if __name__ == '__main__':
test = get_infos(*argv[1:], *argv[2:], *argv[3:])
print(test)

代码：

1 2	for item in level: tab.append(item['login'])

是我找到的登录名的数组列表(例如：暂时我已经 "a" "b" "c" "d")，我想获取所有用户

控制台示例：

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> api-test python3 api-test3.py"1""september""2017"
> api-test
> cat test.out
aaiche
abaille
abezanni
abouquet
acourtin
adfourca
adpusel

使用 requests.get 函数，您应该在 params 关键字参数中传递查询参数。

所以你会想要像

这样的东西

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# ... earlier stuff
h = {'Authorization': 'Bearer ' + token}
params = {
'filter[primary_campus_id]': campus,
'filter[pool_month]': month,
'filter[pool_year]': year,
'sort': 'login'
}
get_students = requests.get('https://api.intra.xxx.fr/v2/cursus/1/users', params=params, headers=h)

# and so on ...

要特别回答您的分页问题，??您需要在 params 字典中添加一个额外的 page 参数。所以你可以添加一个循环

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params = { ... } # as before
for page_idx in range(number_of_pages):
params['page'] = page_idx
get_students_page = requests.get(...)
# combine the outputs somehow, but that depends on the response
# and so on...