最近看py项目总是用到django，在centos上搭了一下看它们的效果。
https://github.com/tokyoprogrammer/islander
旅行岛屿。它将推荐旅游点,并管理您的旅游时间表。
放到centos下，运行setup的sh文件：
https://blog.csdn.net/hpf247/article/details/79190600
运行完结果
| Installing initially failed dependencies... To activate this project's virtualenv, run pipenv shell. Alternatively, run a command inside the virtualenv with pipenv run 正在安装最初失败的依赖项... 要激活此项目的虚拟,请运行 pipenv shell。 或者,在虚拟中运行一个命令,并运行 pipenv |
运行报错：
| [root@centos7 islander]# python manage.py runserver File "manage.py", line 14 ) from exc ^ SyntaxError: invalid syntax |
解决：
https://blog.csdn.net/weixin_39581226/article/details/83479354
更换pip版本
https://www.jianshu.com/p/8bd0872721d4
py
https://jingyan.baidu.com/article/0f5fb0992adeeb6d8334ea12.html
| python --version 查看当前系统中，目前python默认采用的版本号。 |
| 运行以下命令查看当前linux系统已经安装了哪几个版本的python。
ll /usr/bin/pyth* |
| 所以我们要通过更改python默认版本，实际上只需通过更改/usr/bin/python的指向就能实现。操作如下：
删除python软链接文件（不支持修改）： rm -rf python
重新创建新指向 python：ln -s /usr/local/bin/python3 python ln -s /usr/bin/python3.6 python
python –version 查看当前python的版本，发现已经是3版本，成功更改默认版本了。 |
| [root@centos7 bin]# rm python rm: remove symbolic link ‘python’? y [root@centos7 bin]# ln -s /usr/bin/python3.6 python [root@centos7 bin]# python -Vs Python 3.6.8 |
更换pip关联的python版本：
https://jingyan.baidu.com/article/a17d5285daf7398099c8f251.html
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失败
Pip的安装与卸载https://blog.csdn.net/swiftfake/article/details/82591367
https://www.jianshu.com/p/17bc46f52912
直接使用py3的pip：https://blog.csdn.net/qq_36501722/article/details/82115343
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查看python安装路径：
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更换版本后再次启动报错
| ImportError: Couldn't import Django. Are you sure it's installed and available on your PYTHONPATH environment variable? Did you forget to activate a virtual environment? |
Python虚拟环境：
https://blog.csdn.net/op0912036/article/details/82661551
pipenv使用
https://www.jianshu.com/p/00af447f0005
| pipenv --python 3.6 指定某一Python版本创建环境
pipenv shell 激活虚拟环境 退出虚拟环境 |
https://blog.csdn.net/zhanun520jxx/article/details/81293987
| 为了激活与你的Python项目相关联的虚拟环境，你可以使用简单地shell命令，比如 $ pipenv run which python
将在你的虚拟环境中运行which python命令，并显示与你的虚拟环境相关联的python可执行文件所在的路径。 这是在虚拟环境中运行你自己的Python代码的一个简单方法， $ pipenv run python my_prject.py |
| 退出pipenv exit |
再次启动报错：
| python manage.py migrate |
| raise ImproperlyConfigured('SQLite 3.8.3 or later is required (found %s).' % Database.sqlite_version) django.core.exceptions.ImproperlyConfigured: SQLite 3.8.3 or later is required (found 3.7.17). |
查看sqlite：https://cloud.tencent.com/developer/article/1439327
安装最新的sqlite3
| ＃更新SQLite 3 ＃获取源代码（在主目录中运行） [root@djangoServer ~]# cd ~ [root@djangoServer ~]# wget https://www.sqlite.org/2019/sqlite-autoconf-3270200.tar.gz [root@djangoServer ~]# tar -zxvf sqlite-autoconf-3270200.tar.gz
＃构建并安装 [root@djangoServer ~]# cd sqlite-autoconf-3270200 [root@djangoServer sqlite-autoconf-3270200]# ./configure --prefix=/usr/local [root@djangoServer sqlite-autoconf-3270200]# make && make install [root@djangoServer sqlite-autoconf-3270200]# find /usr/ -name sqlite3 /usr/bin/sqlite3 /usr/lib64/python2.7/sqlite3 /usr/local/bin/sqlite3 /usr/local/python3/lib/python3.7/site-packages/django/db/backends/sqlite3 /usr/local/python3/lib/python3.7/sqlite3 [root@djangoServer sqlite-autoconf-3270200]#
＃不必要的文件，目录删除 [root@djangoServer sqlite-autoconf-3270200]# cd ~ [root@djangoServer ~]# ls anaconda-ks.cfg sqlite-autoconf-3270200 sqlite-autoconf-3270200.tar.gz [root@djangoServer ~]# [root@djangoServer ~]# rm -rf sqlite-autoconf-3270200.tar.gz [root@djangoServer ~]# rm -rf sqlite-autoconf-3270200
＃检查版本 ## 最新安装的sqlite3版本 [root@djangoServer ~]# /usr/local/bin/sqlite3 --version 3.27.2 2019-02-25 16:06:06 bd49a8271d650fa89e446b42e513b595a717b9212c91dd384aab871fc1d0f6d7 [root@djangoServer ~]#
## Centos7自带的sqlite3版本 [root@djangoServer ~]# /usr/bin/sqlite3 --version 3.7.17 2013-05-20 00:56:22 118a3b35693b134d56ebd780123b7fd6f1497668 [root@djangoServer ~]#
## 可以看到sqlite3的版本还是旧版本，那么需要更新一下。 [root@djangoServer ~]# sqlite3 --version 3.7.17 2013-05-20 00:56:22 118a3b35693b134d56ebd780123b7fd6f1497668 [root@djangoServer ~]#
## 更改旧的sqlite3 [root@djangoServer ~]# mv /usr/bin/sqlite3 /usr/bin/sqlite3_old
## 软链接将新的sqlite3设置到/usr/bin目录下 [root@djangoServer ~]# ln -s /usr/local/bin/sqlite3 /usr/bin/sqlite3
## 查看当前全局sqlite3的版本 [root@djangoServer ~]# sqlite3 --version |
再次运行
| [root@centos7 islander]# pipenv shell Launching subshell in virtual environment... . /root/.local/share/virtualenvs/islander-CBv2SeYw/bin/activate (islander) [root@centos7 islander]# cd islander/ (islander) [root@centos7 islander]# python manage.py migrate Operations to perform: Apply all migrations: admin, auth, contenttypes, sessions Running migrations: Applying contenttypes.0001_initial... OK Applying sessions.0001_initial... OK |
连接端口被拒
| [root@centos7 ~]# nc 127.0.0.1 8000 Ncat: Connection refused. |
python manage.py runserver 0.0.0.0:8001
更改django后运行成功：
| (islander) [root@centos7 islander]# python manage.py runserver Performing system checks...
System check identified no issues (0 silenced). August 16, 2019 - 09:51:13 Django version 2.0.4, using settings 'islander.settings' Starting development server at http://127.0.0.1:8000/ Quit the server with CONTROL-C. |
检查Python的SQLite3版本：
python使用sqlite3模块集成了SQLite数据库，其中SQLite版本和sqlite3版本是不同的信息
https://www.cnblogs.com/magicdmer/p/5692703.html
| [root@centos7 ~]# python Python 3.6.8 (default, May 2 2019, 20:40:44) [GCC 4.8.5 20150623 (Red Hat 4.8.5-36)] on linux Type "help", "copyright", "credits" or "license" for more information. >>> import sqlite3 >>> print(sqlite3.sqlite_version) 3.7.17 |
强制Python放弃本机sqlite3并使用(已安装的)最新sqlite3版本
查看django版本：https://jingyan.baidu.com/article/adc81513afe132f723bf7306.html
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>>> import django >>> print django.VERSION # Python2的格式 >>> print（django.VERSION) # Python3的格式 |
虚拟环境中django版本：
| >>> print(django.VERSION) (2, 2, 4, 'final', 0) |
| 项目要求版本：2.0.4. |
| 更改版本： pip uninstall Django (islander) [root@centos7 islander]# pip install Django=2.0.4 |
依然nc失败，查看django的接口定义
https://blog.csdn.net/xopqaaa/article/details/88424376
查看views.py
| from django.shortcuts import render
from rest_framework import viewsets from django.http import HttpResponse, JsonResponse from django.views.decorators.csrf import csrf_exempt from rest_framework.renderers import JSONRenderer from rest_framework.parsers import JSONParser from islander_rest.models import * from islander_rest.serializers import *
# Create your views here.
class FoodCategoryViewSet(viewsets.ModelViewSet): """ API endpoint that allows categorys to be viewed or added. """ queryset = FoodCategory.objects.all().order_by('id') serializer_class = FoodCategorySerializer
class RestaurantViewSet(viewsets.ModelViewSet): """ API endpoint that allows restaurants to be viewed or added. """ queryset = Restaurant.objects.all().order_by('id') serializer_class = RestaurantSerializer
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好多空文件QUQ
官网项目信息
https://travis-ci.org/tokyoprogrammer/islander/jobs/373058174
Travis CI
Worker information
system_info
6Build system information
403
404Network availability confirmed.
405
git.checkout
4060.32s$ git clone --depth=50 --branch=master https://github.com/tokyoprogrammer/islander.git tokyoprogrammer/islander
4150.01s$ source ~/virtualenv/python3.6/bin/activate
417$ python --version
418Python 3.6.3
419$ pip --version
420pip 9.0.1 from /home/travis/virtualenv/python3.6.3/lib/python3.6/site-packages (python 3.6)
install
42116.38s$ pip install -r requirements.txt
4670.82s$ pytest
468============================= test session starts ==============================
469platform linux -- Python 3.6.3, pytest-3.3.0, py-1.5.2, pluggy-0.6.0
470rootdir: /home/travis/build/tokyoprogrammer/islander, inifile:
471collected 2 items
472
473test_request.py . [ 50%]
474test_sample.py . [100%]
475
476=========================== 2 passed in 0.23 seconds ===========================
477
478
479The command "pytest" exited with 0.
480
481Done. Your build exited with 0.
Django端口
默认开启8000端口，如果端口占用可以换端口 python manage runserver 8001，如果想让局域网中其他成员访问，python manage runserver 0.0.0.0:8001
setting文件中修改ALLOWED_HOSTS = ['*']。这样局域网成员可以通过本机ip加暴露端口来访问开发网站。不过实际开发中，用电脑还比较好，但是用手机去连接效果不怎么好。如果你是多人开发或者在服务器上开发，你就得这样配置，个人开发的就不用了。