pip安裝第三方包報錯：There was a problem confirming the ssl certificate

錯誤提示

突然使用python直接使用pip install xx時，出現報錯：

Could not fetch URL https://pypi.org/simple/pymysql/: There was a problem confirming the ssl certificate: HTTPSConnectio
nPool(host='pypi.org', port=443): Max retries exceeded with url: /simple/pymysql/ (Caused by SSLError(SSLError(1, '[SSL:
CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:852)'),)) - skipping

報錯內容如下：

PS C:\Users\yinha> pip install pymysql
WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:852)'),)': /simple/pymysql/ WARNING: Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:852)'),)': /simple/pymysql/ WARNING: Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:852)'),)': /simple/pymysql/ WARNING: Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:852)'),)': /simple/pymysql/ WARNING: Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:852)'),)': /simple/pymysql/ Could not fetch URL https://pypi.org/simple/pymysql/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.org', port=443): Max retries exceeded with url: /simple/pymysql/ (Caused by SSLError(SSLError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:852)'),)) - skipping ERROR: Could not find a version that satisfies the requirement pymysql (from versions: none) ERROR: No matching distribution found for pymysql

解決過程

一開始以為是ide環境出了問題，后來在終端，在虛擬環境測試都會報錯。

1. 重裝python　　無效

2.重裝pip　　　　無效

 

python -m pip uninstall pip

C:\Python36\Scripts>easy_install.exe -i http://mirrors.aliyun.com/pypi/simple/ pip

 

 

3.添加--trusted-host　　有效

但是每次安裝增加此參數，比較麻煩

pip install pymysql -i http://pypi.tuna.tsinghua.edu.cn/simple/ --trusted-host pypi.tuna.tsinghua.edu.cn

 

4.創建pip配置pip.ini。　　有效

（1）在系統目錄C:\Users\用戶\AppData\Roaming新建pip文件夾；

（2）在pip文件夾下新建pip.ini文件，並寫入如下配置：

[global]
index-url = http://mirrors.aliyun.com/pypi/simple/
[install]
trusted-host = mirrors.aliyun.com

 5.關閉Fiddler

看到這里真的是崩潰，開啟它之后運行python會自動改變端口，造成ssl錯誤。

不多解釋了，關掉就好，說多了都是淚。

 

順便說一下：開啟Fiddler后，對requests模塊也會產生ssl認證的報錯。

之前沒發現這個原因時，就靠如下方法對付：

# 忽略警告
requests.packages.urllib3.disable_warnings()
#取消認證
requests.get(url=url,cookies=cookies,verify=False)