pip包冲突

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certbot
Traceback (most recent call last):
File "/bin/certbot", line 7, in <module>
from certbot.main import main
File "/usr/lib/python2.7/site-packages/certbot/main.py", line 17, in <module>
from certbot import account
File "/usr/lib/python2.7/site-packages/certbot/account.py", line 17, in <module>
from acme import messages
File "/usr/lib/python2.7/site-packages/acme/messages.py", line 7, in <module>
from acme import challenges
File "/usr/lib/python2.7/site-packages/acme/challenges.py", line 11, in <module>
import requests
File "/usr/lib/python2.7/site-packages/requests/__init__.py", line 58, in <module>
from . import utils
File "/usr/lib/python2.7/site-packages/requests/utils.py", line 32, in <module>
from .exceptions import InvalidURL
File "/usr/lib/python2.7/site-packages/requests/exceptions.py", line 10, in <module>
from .packages.urllib3.exceptions import HTTPError as BaseHTTPError
File "/usr/lib/python2.7/site-packages/requests/packages/__init__.py", line 95, in load_module
raise ImportError("No module named '%s'" % (name,))
ImportError: No module named 'requests.packages.urllib3'

pip install requests urllib3 pyOpenSSL --force --upgrade
certbot
An unexpected error occurred:
VersionConflict: (setuptools 0.9.8 (/usr/lib/python2.7/site-packages), Requirement.parse('setuptools>=1.0'))
pip install --upgrade pip setuptools
certbot
ls

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yum install openssl-devel python-devel
pip install --upgrade pip setuptools
pip install certbot
pip install requests urllib3 pyOpenSSL --force --upgrade

certbot -d tab.deoops.com  --manual --preferred-challenges dns certonly