Python 根本没法安装 curl_cffi 怎么回事？

python 新手，尝试 pip install curl_cffi ，报错：

Could not find a version that satisfies the requirement curl_cffi (from versions: )
No matching distribution found for curl_cffi

python --version 显示：Python 2.7.17

然后尝试 pip3 install curl_cffi ，安装成功了，然后运行 test.py：

from curl_cffi import requests
r = requests.get("https://tls.browserleaks.com/json", impersonate="chrome101")
print(r.json())

python3 test.py 报错如下：

Traceback (most recent call last):
  File "test.py", line 1, in <module>
    from curl_cffi import requests
ImportError: cannot import name 'requests'

python3 --version 显示：Python 3.6.9

请问这该怎么解决？