Centos7下完美安裝部署python3.10

mv python python.bak

步驟6、下載python3.10.9的源碼，自己創(chuàng)建一個(gè)目錄保存源碼，我自己放在/home/目錄下。通過(guò)cd /home/命令切換到/home/目錄下，執(zhí)行wget下載命令：

wget https://www.python.org/ftp/python/3.10.9/Python-3.10.9.tar.xz

如果自己系統(tǒng)沒(méi)有wget命令，則yum安裝一下。

yum install-y wget

自己想安裝什么python3版本，就到https://www.python.org/getit/這個(gè)網(wǎng)站找，只需將以上版本路徑替換即可。

（1）如我這里安裝python3.10.9，打開(kāi)上面網(wǎng)址后如下圖所示：

（2）選擇對(duì)應(yīng)python版本后，點(diǎn)擊“download”后，下拉找到file頁(yè)面，如下圖所示：

（3）此時(shí)復(fù)制鏈接地址后，即可通過(guò)wget + 鏈接地址進(jìn)行python源碼下載，如下命令所示，這里對(duì)應(yīng)步驟6的命令：

wget https://www.python.org/ftp/python/3.10.9/Python-3.10.9.tar.xz

步驟7、在/home/目錄下已經(jīng)看到下載好的源碼，通過(guò)tar -xvJf Python-3.7.0a4.tar.xz命令進(jìn)行解壓縮。如下所示：

[root@huanghao-1 home]# ll
total 19156
-rw-r--r-- 1 root root 19612112 Dec  7 03:01 Python-3.10.9.tar.xz
[root@huanghao-1 home]# tar -xvJf  Python-3.10.9.tar.xz

步驟8、/home/目錄下，通過(guò)命令cd Python-3.10.9切換進(jìn)入源碼包目錄。

cd Python-3.10.9

步驟9、編譯安裝，依次執(zhí)行以下命令進(jìn)行：

./configureprefix=/usr/local/python3.10 --with-ssl
make&&makeinstall

等待安裝完畢后，通過(guò)命令cd/usr/local/切換到/usr/local/目錄下，通過(guò)ll命令查看，就會(huì)有python3.10目錄了,如下圖所示：

[root@huanghao-1 Python-3.10.9]# cd /usr/local/
[root@huanghao-1 local]# ll
total 0
drwxr-xr-x. 2 root root  6 Aug 12  2015 bin
drwxr-xr-x. 2 root root  6 Aug 12  2015 etc
drwxr-xr-x. 2 root root  6 Aug 12  2015 games
drwxr-xr-x. 2 root root  6 Aug 12  2015 include
drwxr-xr-x. 2 root root  6 Aug 12  2015 lib
drwxr-xr-x. 2 root root  6 Aug 12  2015 lib64
drwxr-xr-x. 2 root root  6 Aug 12  2015 libexec
drwxr-xr-x  6 root root 52 Mar 26 19:06 python3.10
drwxr-xr-x. 2 root root  6 Aug 12  2015 sbin
drwxr-xr-x. 5 root root 46 Jul 28  2018 share
drwxr-xr-x. 2 root root  6 Aug 12  2015 src
[root@huanghao-1 local]#

步驟10、將python3.10版本對(duì)應(yīng)的執(zhí)行文件添加軟鏈接到執(zhí)行目錄下/usr/bin，通過(guò)以下命令完成：

ln-s/usr/local/python3.10/bin/python3.10/usr/bin/python

最終結(jié)果如下所示：

[root@huanghao-1 bin]# cd /usr/bin/
[root@huanghao-1 bin]# ll python*  
lrwxrwxrwx  1 root root   36 Mar 26 19:11 python -> /usr/local/python3.10/bin/python3.10
lrwxrwxrwx. 1 root root    9 Jul 28  2018 python2 -> python2.7
-rwxr-xr-x. 1 root root 7136 Nov 20  2015 python2.7
lrwxrwxrwx. 1 root root    7 Jul 28  2018 python.bak -> python2

步驟11、測(cè)試是否成功安裝，執(zhí)行python -V命令，執(zhí)行python2 -V，輸出如下所示：成功安裝python3.10.9版本。

[root@huanghao-1 bin]# python -V
Python 3.10.9
[root@huanghao-1 bin]# python2 -V
Python 2.7.5

步驟12、因?yàn)閳?zhí)行yum等命令需要python2版本，所以我們還要修改yum配置及其它相關(guān)配置:

(1)執(zhí)行命令vi /usr/bin/yum進(jìn)行修改，修改內(nèi)容如下：

把#! /usr/bin/python修改為：

#! /usr/bin/python2

（2）執(zhí)行命令vi /usr/libexec/urlgrabber-ext-down

把文件里面的#! /usr/bin/python 也要修改為：

#! /usr/bin/python2

（3）執(zhí)行命令vi /usr/sbin/firewalld

文件里面的#!/usr/bin/python -Es也要修改為：

#!/usr/bin/python2 -Es

步驟13、建立pip3的軟鏈接，執(zhí)行以下命令：

ln -s /usr/local/python3.10/bin/pip3 /usr/bin/pip3

步驟14、這樣python3版本就安裝完成，同時(shí)python2也存在：可以通過(guò)以下命令進(jìn)行查看：

[root@huanghao-1 bin]# python -V
Python 3.10.9
[root@huanghao-1 bin]# python2 -V
Python 2.7.5

步驟15、此時(shí)發(fā)現(xiàn)安裝完成后，無(wú)法通過(guò)pip3命令安裝相關(guān)模塊，如：

[root@huanghao-1 ~]#pip3installFlask
WARNING: pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available.
WARNING: Retrying (Retry(total=4, 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/flask/
WARNING: 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/flask/
WARNING: Retrying (Retry(total=2, 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/flask/
WARNING: 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/flask/
WARNING: Retrying (Retry(total=0, 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/flask/
Could not fetch URL https://pypi.org/simple/flask/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.org', port=443): Max retries exceeded with url: /simple/flask/ (Caused by SSLError("Can't connect to HTTPS URL because the SSL module is not available.")) - skipping
ERROR: Could not find a version that satisfies the requirement Flask (from versions: none)
ERROR: No matching distribution found for Flask
WARNING: 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
WARNING: There was an error checking the latest version of pip.
[root@node1 Python-3.10.9]# pip3 install --upgrade pip
WARNING: pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available.
Requirement already satisfied: pip in /usr/local/python3.10/lib/python3.10/site-packages (22.3.1)
WARNING: Retrying (Retry(total=4, 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/pip/
WARNING: 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/pip/
WARNING: Retrying (Retry(total=2, 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/pip/
WARNING: 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/pip/
WARNING: Retrying (Retry(total=0, 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/pip/
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
WARNING: Running pip as the 'root' user can result in broken permissions and conflicting behaviour with the system package manager. It is recommended to use a virtual environment instead: https://pip.pypa.io/warnings/venv
WARNING: 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
WARNING: There was an error checking the latest version of pip.

如上出現(xiàn)報(bào)錯(cuò)，此時(shí)可以按照如下方法進(jìn)行解決。

（1）在用戶家目錄下創(chuàng)建相關(guān)文件后進(jìn)行如下編輯：

[root@huanghao-1 ~]# mkdir -p ~/.pip
[root@huanghao-1 ~]# vi ~/.pip/pip.conf

（2）在上一步編輯文件中，新增如下內(nèi)容：

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


[install]
trusted-host = mirrors.aliyun.com

（3）此時(shí)再次安裝相應(yīng)模塊，如下可以成功了。

[root@huanghao-1 ~]# pip3 install Flask
Looking in indexes: http://mirrors.aliyun.com/pypi/simple
Collecting Flask
  Downloading http://mirrors.aliyun.com/pypi/packages/fa/1a/f191d32818e5cd985bdd3f47a6e4f525e2db1ce5e8150045ca0c31813686/Flask-2.3.2-py3-none-any.whl (96 kB)
     ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 96.9/96.9 kB 1.8 MB/s eta 000
Collecting Jinja2>=3.1.2
  Downloading http://mirrors.aliyun.com/pypi/packages/bc/c3/f068337a370801f372f2f8f6bad74a5c140f6fda3d9de154052708dd3c65/Jinja2-3.1.2-py3-none-any.whl (133 kB)
     ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 133.1/133.1 kB 1.4 MB/s eta 000
Collecting click>=8.1.3
  Downloading http://mirrors.aliyun.com/pypi/packages/1a/70/e63223f8116931d365993d4a6b7ef653a4d920b41d03de7c59499962821f/click-8.1.6-py3-none-any.whl (97 kB)
     ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 97.9/97.9 kB 1.4 MB/s eta 000
Collecting Werkzeug>=2.3.3
  Downloading http://mirrors.aliyun.com/pypi/packages/ba/d6/8040faecaba2feb84e1647af174b3243c9b90c163c7ea407820839931efe/Werkzeug-2.3.6-py3-none-any.whl (242 kB)
     ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 242.5/242.5 kB 1.5 MB/s eta 000
Collecting blinker>=1.6.2
  Downloading http://mirrors.aliyun.com/pypi/packages/0d/f1/5f39e771cd730d347539bb74c6d496737b9d5f0a53bc9fdbf3e170f1ee48/blinker-1.6.2-py3-none-any.whl (13 kB)
Collecting itsdangerous>=2.1.2
  Downloading http://mirrors.aliyun.com/pypi/packages/68/5f/447e04e828f47465eeab35b5d408b7ebaaaee207f48b7136c5a7267a30ae/itsdangerous-2.1.2-py3-none-any.whl (15 kB)
Collecting MarkupSafe>=2.0
  Downloading http://mirrors.aliyun.com/pypi/packages/12/b3/d9ed2c0971e1435b8a62354b18d3060b66c8cb1d368399ec0b9baa7c0ee5/MarkupSafe-2.1.3-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (25 kB)
Installing collected packages: MarkupSafe, itsdangerous, click, blinker, Werkzeug, Jinja2, Flask
Successfully installed Flask-2.3.2 Jinja2-3.1.2 MarkupSafe-2.1.3 Werkzeug-2.3.6 blinker-1.6.2 click-8.1.6 itsdangerous-2.1.2
WARNING: Running pip as the 'root' user can result in broken permissions and conflicting behaviour with the system package manager. It is recommended to use a virtual environment instead: https://pip.pypa.io/warnings/venv


[notice] A new release of pip available: 22.3.1 -> 23.2.1
[notice] To update, run: /usr/local/python3.10/bin/python3.10 -m pip install --upgrade pip

（4）根據(jù)提示，也可以升級(jí)pip版本到最新的版本。

pip3 install --upgrade pip

（5）下面可以通過(guò)創(chuàng)建一段腳本，驗(yàn)證下載的模塊是否可以正常使用，創(chuàng)建名為hello_flask.py的文件，內(nèi)容如下：

[root@huanghao-1 ~]# cat hello_flask.py 
from flask import Flask


app = Flask(__name__)


@app.route('/')
def hello():
        return 'Hello flask'


if __name__ == '__main__':
app.run(host='0.0.0.0',port=8888,debug=True)

（6）執(zhí)行hello_flask.py腳本

python hello_flask.py

（7）當(dāng)前我的服務(wù)器地址是192.168.20.232，在瀏覽器訪問(wèn)如下地址：得到響應(yīng)如下圖所示：

到此整個(gè)安裝部署完成，大家可以參考以上步驟自己進(jìn)行各個(gè)python3版本的安裝，注意更改到自己實(shí)際環(huán)境中的對(duì)應(yīng)目錄即可。

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