跟着大神的文章做下来的，良心佳作。跟随大神,略有改动。https://www.django.cn/course/show40.html把过程写一遍，加强理解。虚拟环境需要使用python3.5/6/7/8,django2.1.11、创建项目与应用在虚拟环境中创建项目与应用激活虚拟环境D:\django_basic_venv\Scriptsactivate查看django版本，如果环境不匹配直接pi
1、报错如下:fromdjango.urlsimportpathImportError:Nomodulenamed'django.urls'解决:查看版本pythonc"importdjango;print(django.get_version())"1.9.5安装django=2.1.1pipinstalldjango2.2.1引自:https://stackoverflow.com/quest
models中有如下语句，执行pythonmanage.pymakemigrations:def__str__(self):returnself.name执行pythonmanage.pymakemigrations报错如下:File"D:\pythonfile\venv\lib\sitepackages\django\db\backends\mysql\operations.py",line14
You are trying to add a non-nullable field 'name' to contact without a default; we can't do that (the database needs something to populate existing rows).Please select a fix: 1) Provide a one-off
fromblog.modelsimportBook.Author报错如下:django.core.exceptions.ImproperlyConfigured:RequestedsettingDEFAULT_INDEX_TABLESPACE,butsettingsarenotconfigured.YoumusteitherdefinetheenvironmentvariableDJANGO_SE
python3.5 连接数据库执行python manage.py migrate ，报错如下:Error loading MySQLdb module: No module named 'MySQLdb'后在__init__.py中加入:import pymysql pymysql.install_as_MySQLdb()报错如下:import pymysql import connection
import socket import subprocess import sys #函数定义 def port_scan(ip,dest_port): try: for port in range(1,dest_port): sock = socket.socket(socket.AF_INET,socket.SOCK_STREAM) //
python基础语法以及demo
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