關於 pip安裝的可能錯誤的排除

轉載地址：http://www.cnblogs.com/botoo/p/7410316.html

今天安裝wheel和lxml老是報錯（下爲錯誤信息）

C:\Python27\Scripts>pip install wheel

Collecting wheel
  Retrying (Retry(total=4, connect=None, read=None, redirect=None)) after
tion broken by 'ReadTimeoutError("HTTPSConnectionPool(host='pypi.python.or
rt=443): Read timed out. (read timeout=15)",)': /simple/wheel/
  Retrying (Retry(total=3, connect=None, read=None, redirect=None)) after
tion broken by 'ReadTimeoutError("HTTPSConnectionPool(host='pypi.python.or
rt=443): Read timed out. (read timeout=15)",)': /simple/wheel/
  Retrying (Retry(total=2, connect=None, read=None, redirect=None)) after
tion broken by 'ReadTimeoutError("HTTPSConnectionPool(host='pypi.python.or
rt=443): Read timed out. (read timeout=15)",)': /simple/wheel/
  Retrying (Retry(total=1, connect=None, read=None, redirect=None)) after
tion broken by 'ReadTimeoutError("HTTPSConnectionPool(host='pypi.python.or
rt=443): Read timed out. (read timeout=15)",)': /simple/wheel/
  Retrying (Retry(total=0, connect=None, read=None, redirect=None)) after
tion broken by 'ReadTimeoutError("HTTPSConnectionPool(host='pypi.python.or
rt=443): Read timed out. (read timeout=15)",)': /simple/wheel/
  Could not find a version that satisfies the requirement wheel (from vers
)

No matching distribution found for wheel

能夠解決問題的解決方法：

此狀況只用於網絡不順暢的安裝模塊背景：

 

總出現紅色的

Could not find a version that satisfies the requirement pymongo(from version:)
 

你可能會遇到下面這樣的狀況：

是由於網絡的問題，要使用國內的鏡像源來加速

 

解決辦法：

你須要的是在你的命令行下面添加一句

例如：本來執行的命令是：

pip install wheel

改成：

pip install wheel -i http://pypi.douban.com/simple/ --trusted-host pypi.douban.com

結果會就成功：

 

ok！問題解決！