python pyramid基础学习二

1.前言

前面我们使用了基础命令创建pyramid项目，并运行了Hello word，万事开头难，我们知道了开发pyramid项目需要一个env文件夹，里面包
含了运行基本环境

2.实战项目的基础环境

 在任意目录下执行 pip install cookiecutter再执行 export PATH=$HOME/.local/bin:$PATH再执行: source ~/.bash_profile（可以编辑 ~/.bash_profile 文件将 PATH=$HOME/.local/bin:$PATH添加到文件当中去，永久生效）具体细节需要参考官网：https://cookiecutter.readthedocs.io/en/latest/first_steps.html

##3. 使用cookiecutter创建项目 myproject##

  执行 cookiecutter gh:Pylons/pyramid-cookiecutter-starter --checkout 1.10-branch如果提示输入第一项，请yes按回车键接受默认设置。You've cloned ~/.cookiecutters/pyramid-cookiecutter-starter before.Is it okay to delete and re-clone it? [yes]: yesproject_name [Pyramid Scaffold]: myprojectrepo_name [myproject]: myprojectSelect template_language:1 - jinja22 - chameleon3 - makoChoose from 1, 2, 3 [1]: 1Select backend:1 - none2 - sqlalchemy3 - zodbChoose from 1, 2, 3 [1]: 1

##4.cookiecutter项目中添加虚拟环境##
1.先指定一个临时的环境变量，为了后续的操作
export VENV=/myproject/env
2.找到项目myproject,并执行相关命令
cd myproject
python3 -m venv $VENV
3.安装setuptools
env/bin/pip install --upgrade pip setuptools
4.执行安装
cd /myproject
$VENV/bin/pip install -e .
（改命令需要在myproject目录下执行，后面的点代表当前的目录,或者这么执行/myproject/env/bin/pip install -e .）
显示如下：
Running setup.py develop for myproject
Successfully installed Jinja2-2.8 Mako-1.0.6 MarkupSafe-0.23
PasteDeploy-1.5.2 Pygments-2.1.3 WebOb-1.7.0 myproject pyramid-1.7.3
pyramid-debugtoolbar-3.0.5 pyramid-jinja2-2.7 pyramid-mako-1.0.2
repoze.lru-0.6 translationstring-1.3 venusian-1.0 waitress-1.0.1
zope.deprecation-4.2.0 zope.interface-4.3.3
##5.添加测试环境支撑##
1.执行下面命令
$VENV/bin/pip install -e “.[testing]”
2.测试项目
$VENV/bin/pytest -q
##6.运行项目##
$VENV/bin/pserve development.ini

##7.注意事项##

1.我的阿里云服务器需要修改development.ini文件里面的localhost改为0.0.0.0不然无法进行绑定端口出现以下错误,应该是由于host文件配置有相关File "/data/test/app/env//bin/pserve", line 10, in <module>sys.exit(main())File "/data/test/app/env/lib/python3.7/site-packages/pyramid/scripts/pserve.py", line 34, in mainreturn command.run()File "/data/test/app/env/lib/python3.7/site-packages/pyramid/scripts/pserve.py", line 285, in runserver(app)File "/data/test/app/env/lib/python3.7/site-packages/paste/deploy/loadwsgi.py", line 195, in server_wrapper**context.local_conf)File "/data/test/app/env/lib/python3.7/site-packages/paste/deploy/util.py", line 55, in fix_callval = callable(*args, **kw)File "/data/test/app/env/lib/python3.7/site-packages/waitress/__init__.py", line 22, in serve_pasteserve(app, **kw)File "/data/test/app/env/lib/python3.7/site-packages/waitress/__init__.py", line 12, in serveserver = _server(app, **kw)File "/data/test/app/env/lib/python3.7/site-packages/waitress/server.py", line 88, in create_serversockinfo=sockinfo,File "/data/test/app/env/lib/python3.7/site-packages/waitress/server.py", line 239, in __init__self.bind_server_socket()File "/data/test/app/env/lib/python3.7/site-packages/waitress/server.py", line 368, in bind_server_socketself.bind(sockaddr)File "/data/test/app/env/lib/python3.7/site-packages/waitress/wasyncore.py", line 398, in bindreturn self.socket.bind(addr)
2.运行项目可以使用 $VENV/bin/pserve development.ini --reload 这个命令的意思是，当文件改变时会自动重新加载python文件
3.注意上面的临时环境变量VENV的路径正确性，或者运行的时候采用直接路径4.pyramid的项目集成到了pycharm开发工具里面去。这里主要是对官方文档的解释，以及实际应用中遇到些问题
5.最主要的核心是venv(env)文件夹，既然是虚拟环境文件夹，那么在不同系统当中，就需要重新新建，然后再把源代码迁移过，还能引申到python2.7升级到python3.7项目时，需要重新生成venv(env)文件夹
6.cookiecutter创建的各个文件内容，后续再献上，官网地址https://docs.pylonsproject.org/projects/pyramid/en/latest/narr/project.html#project-narr