指定网站建设项目规划书营销策略都有哪些
一.用django入门第一个问题:pycharm的[community]社区版-免费开源与[professional]专业版注册收费两个版本:用django只能有[professional]版本便捷、专业;
解决方案的各种学习总结:
1.破解版:网上找了很多资料,基本已经没效果,不要报太大希望;
2.找中间途径然后有:Python 、Pycharm、Anaconda三者的区别与联系----
Anacoda的安装方法:
(1).安装Anacoda(建议安装Anacoda3版本)
(2).安装后电脑环境变量的设置(桌面找到这台电脑右键:点击[属性]----弹出一个窗口点击[高级系统设置]----点击[环境变量]---找到path):把安装Anaconda路径 + Anaconda3;安装Anaconda路径 + Anaconda + scrips;安装Anaconda路径 + Anaconda3 + \library\bin;(这样就把环境变量设置好了,按确定就行);
3.下载pycharm时网速太慢,又找到了下载途径:中科大镜像,清华大学开源软件镜像站,中科大镜像;
二.django运用时pycharm各自问题;
解决方案的各种学习总结:
1..pip升级:
pip install --upgrade pip2.pip安装第三方库(模块)加载不到pycharm中:
第一步:用快捷键win+R打开运行框,输入cmd命令打开终端窗口输入:python -m site -help;查看匹配pip放置位置:
''D:\编程语言\Python\lib\site.py [--user-base] [--user-site] #pip安装文件放置的位置 查看lib\site.py文件Without arguments print some useful informationWith arguments print the value of USER_BASE and/or USER_SITE separatedby ';'.Exit codes with --user-base or --user-site:0 - user site directory is enabled1 - user site directory is disabled by user2 - user site directory is disabled by super useror for security reasons>2 - unknown error'''第二步:打开文件lib\site.py查看:
USER_SITE = None
USER_BASE = None
改成你要pip安装文件的位置如:
USER_SITE ='D:/编程语言/Python'
USER_SITE ='D:/编程语言/Python/Lib/site-packages'
就行了.
3.python第三方库(模块)加载:
打开pycharm进入[settings]找到 [project]项 在 [project interprter] 进入 [Show All] 进入对话框 点击 [Show paths for the selected interprter ] 把安装第三方库(模块)的文件夹添加就行;
4.升级django版本:
pip install --upgrade django==3.1.0(根据需要填写)
5.django启动pycharm出现的故障;
(1).
You have 18 unapplied migration(s). Your project may not work properly until you apply the migrations for app(s): admin, auth, contenttypes, sessions.Run 'python manage.py migrate' to apply them.解决方案:
python manage.py migrate
(2).
WARNINGS:?: (2_0.W001) Your URL pattern '^$' has a route that contains '(?P<', begins with a '^', or ends with a '$'. This was likely an oversight when migrating to django.urls.path().System check identified 1 issue (0 silenced).解决方案:
在url.py文件中:
urlpatterns = [path(r'^$', views.item),]
改成:
urlpatterns = [path(r'item/', views.item),]
(3).
NameError: name ‘os‘ is not defined，pycharm连接Django sqlite3 解决方案:
添加:import os
(4)
AttributeError: module 'collections' has no attribute 'Iterator'解决方案:
建议----重新建立一个新项目,更方便!
完没,后续补充!