平时跑的好好的python脚本，今天一运行出现错误，把解决方法记录，如下：
错误内容：
Traceback (most recent call last):
File "/home/teld/mysqlDateBackup.py", line 12, in <module>
from xxxx import xxxxx
File "/usr/lib/python2.7/site-packages/azure/storage/blob/init.py", line 39, in <module>
from .blockblobservice import BlockBlobService
File "/usr/lib/python2.7/site-packages/azure/storage/blob/blockblobservice.py", line 64, in <module>
from .baseblobservice import BaseBlobService
File "/usr/lib/python2.7/site-packages/azure/storage/blob/baseblobservice.py", line 95, in <module>
from ..storageclient import StorageClient
File "/usr/lib/python2.7/site-packages/azure/storage/storageclient.py", line 18, 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'
解决方法：
pip install --upgrade --force-reinstall 'requests==2.6.0' urllib3