程序
简单的web
import socket
from threading import Thread
server = socket.socket()
server.bind(('0.0.0.0',8001))
server.listen()
def communication(conn):
client_msg = conn.recv(1024).decode('utf-8')
# print(client_msg)
path = client_msg.split('\r\n')[0].split(' ')[1]
print(path)
#针对不同的请求路径,返回不同的文件
if path =='/':
conn.send(b'HTTP/1.1 200 ok \r\nk1:v1\r\n\r\n')
# conn.send(b'who are you?')
with open('01 index2.html', 'rb') as f:
data = f.read()
conn.send(data)
conn.close()
while 1:
conn, add = server.accept()
t = Thread(target=communication,args=(conn,))
t.start()保持连接
#和咱们学的socketserver那个模块很像啊
httpd = make_server('127.0.0.1', 8001, application) bind connect 连接地址
print('Serving HTTP on port 8001...')
# 开始监听HTTP请求:
httpd.serve_forever() jinja2
from wsgiref.simple_server import make_server
from jinja2 import Template
def index():
with open("index2.html", "r",encoding='utf-8') as f:
data = f.read()
template = Template(data) # 生成模板文件
ret = template.render({"name": "于谦", "hobby_list": ["烫头", "泡吧"]}) # 把数据填充到模板里面
return [bytes(ret, encoding="utf8"), ]
# 定义一个url和函数的对应关系
URL_LIST = [
("/index/", index),
]
def run_server(environ, start_response):
start_response('200 OK', [('Content-Type', 'text/html;charset=utf8'), ]) # 设置HTTP响应的状态码和头信息
url = environ['PATH_INFO'] # 取到用户输入的url
func = None # 将要执行的函数
for i in URL_LIST:
if i[0] == url:
func = i[1] # 去之前定义好的url列表里找url应该执行的函数
break
if func: # 如果能找到要执行的函数
return func() # 返回函数的执行结果
else:
return [bytes("404没有该页面", encoding="utf8"), ]
if __name__ == '__main__':
httpd = make_server('', 8000, run_server)
print("Serving HTTP on port 8000...")
httpd.serve_forever()URL 路由分发就是当前的 枚举的那一套路
自定义原生sql
def auth(username,password):
import pymysql
conn = pymysql.connect(
host='127.0.0.1',
port=3306,
user='root',
password='123',
database='day53',
charset='utf8'
)
print('userinfo',username,password)
cursor = conn.cursor(pymysql.cursors.DictCursor)
sql = 'select * from userinfo where username=%s and password=%s;'
res = cursor.execute(sql, [username, password])
if res:
return Trueformset .py
from django.forms.models import modelformset_factory
from django import forms
class StudyRecordDetialModelForm(forms.ModelForm):
class Meta:
model = models.StudentStudyRecord
# fields = '__all__'
fields = ['score','homework_note']
class StudyRecordDetialView2(View):
def get(self,request,class_record_id):
all_study_record = models.StudentStudyRecord.objects.filter( # 找到这个课程记录的所有学生记录
classstudyrecord=class_record_id,
)
form_set_obj = modelformset_factory(model=models.StudentStudyRecord,form=StudyRecordDetialModelForm)
# 哪张表（model）来使用modelformset 使用这张表来加工表的时候用的哪个modermform(from)
formset = form_set_obj(queryset = all_study_record) #使用all_study_record来加工query记录
# 来加工modermform的哪些数据，通过queryset来指定
return render(request, 'student/study_record_detail.html', { 'formset': formset })
def post(self,request,class_record_id):
all_study_record = models.StudentStudyRecord.objects.filter( # 找到这个课程记录的所有学生记录
classstudyrecord=class_record_id,
)
form_set_obj = modelformset_factory(model=models.StudentStudyRecord, form=StudyRecordDetialModelForm,extra=0)
# 哪张表（model）来使用modelformset 使用这张表来加工表的时候用的哪个modermform(from)
formset = form_set_obj(request.POST) # 使用all_study_record来加工query记录
# 来加工modermform的哪些数据，通过queryset来指定
if formset.is_valid():
formset.save()
else:
print(formset.errors)
#
# return redirect(reverse('study_record',args=(class_record_id,)))
return self.get(request,class_record_id)
# return request.get(request,class_record_id)formset.html
{{ formset.management_form }} {# 类似于csrf认识的标识符 #}
<table class="table table-bordered">
<thread>
<tr>
<th>姓名</th>
<th>考勤</th>
<th>作业成绩</th>
<th>作业评语</th>
</tr>
</thread>
<tbody>
{% for form in formset %} {# formset 就包括了一条条记录#}
<tr>
{{ form.id }} {# pk值#}
<td>{{ form.student }}</td> {#默认会自动生成下拉框 ，如果不让他渲染，#}
{#那么需要使用form.instance.student.这是form对象原值，原来的数据#}
<td>{{ form.get_record_display }}</td>
{# <td>{{ form.instance.get_record_display }}</td>#}
<td>{{ form.score }}</td>
<td>{{ form.homework_note }}</td>
</tr>