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python3和pip3安装和问题解决(实践可以)

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python3和pip3安装和问题解决

python3安装前,最好先安装下依赖包:
yum install -y openssl-devel
yum install -y openssl
yum install -y zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel
$ yum install gcc -y
$ yum install zlib zlib-devel -y
$ wget https://www.python.org/ftp/python/3.6.2/Python-3.6.2rc1.tgz
$ tar zxvf Python-3.6.2rc1.tgz
$ cd Python-3.6.2rc1/
把Python3.6安装到 /usr/local 目录
$ ./configure –prefix=/usr/local
$ make
$ make install
最后提示:Successfully installed pip-9.0.1 setuptools-28.8.0
$ ln -s /usr/local/bin/python3.6 /usr/bin/python3
$ ln -s /usr/local/bin/python3.6 /usr/bin/python #最好不要把原本的旧版python覆盖掉。
在使用pip3.6安装模块的时候出现如下错误。
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[root@zabbix Python-3.6.2rc1]# pip install ansible
pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available.
Collecting ansible
  Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can'connect to HTTPS URL because the SSL module is not available.",)': /simple/ansible/
  Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.",)': /simple/ansible/
  Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can'connect to HTTPS URL because the SSL module is not available.",)': /simple/ansible/
  Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.",)': /simple/ansible/
  Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can'connect to HTTPS URL because the SSL module is not available.",)': /simple/ansible/
  Could not fetch URL https://pypi.org/simple/ansible/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.org', port=443): Max retries exceeded with url: /simple/ansible/ (Caused by SSLError("Can'connect to HTTPS URL because the SSL module is not available.",)) - skipping
  Could not find a version that satisfies the requirement ansible (from versions: )
No matching distribution found for ansible
pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available.
Could not fetch URL https://pypi.org/simple/pip/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.org', port=443): Max retries exceeded with url: /simple/pip/ (Caused by SSLError("Can't connect to HTTPS URL because the SSL module is not available.",)) - skipping
[root@zabbix Python-3.6.2rc1]#

 

从错误提示来看是缺少了ssl模块,centos下的解决方案…

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yum install openssl
yum install openssl-devel -y

如果还是不行:

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1.安装ssl
sudo apt-get install openssl
 
sudo apt-get install libssl-dev
 
2. 修改Moudles/Setup  (该目录在python的解压目录下)
 
vim Modules/Setup
#修改结果如下:
# Socket module helper for socket(2)
_socket socketmodule.c timemodule.c
 
# Socket module helper for SSL support; you must comment out the other
# socket line above, and possibly edit the SSL variable:
SSL=/usr/local/ssl #这个改成自己对应的 /usr/local/openssl
_ssl _ssl.c \
-DUSE_SSL -I$(SSL)/include -I$(SSL)/include/openssl \
-L$(SSL)/lib -lssl -lcrypto
 
3.重新安装一次
./configure --prefix=/usr/local/python
make
make install
 
4.测试是否SSL可用<br>python3 <br>>>> import ssl

python3安装后一般会自带pip3,如果没有,就自己安装:

去https://pypi.org/project/pip/下载最新版的pip-10.0.1.tar.gz

解压tar -xf pip-10.0.1.tar.gz

进入文件夹运行:

python setup.py install

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