flask

2025-09-03 11:19:03 +08:00
parent 584548d006
commit 2eeaa699c7
13 changed files with 347 additions and 1 deletions
@@ -0,0 +1,32 @@
+from flask import Flask
+from flask import render_template
+from flask import request
+from flask import make_response
+
+app = Flask(__name__)
+
+@app.route('/') # 路由 映射到根目录
+def hello_world():
+    return 'Hello, World!'
+
+@app.route('/greet/<name>') # 视图，有传参
+def greet(name):
+    return f'Hello, {name}!'
+
+@app.route('/submit', methods=['POST']) # 请求对象，定义了方法
+def submit():
+    username = request.form.get('username')
+    return f'Hello, {username}!'
+
+@app.route('/custom_response') # 响应对象
+def custom_response():
+    response = make_response('This is a custom response!') # 响应体
+    response.headers['X-Custom-Header'] = 'Value' # 响应头
+    return response
+
+@app.route('/hello/<name>') # 使用模板渲染
+def hello(name):
+    return render_template('hello.html', name=name)
+
+if __name__ == '__main__':
+    app.run(debug=True)
@@ -0,0 +1,24 @@
+from flask import Flask, render_template
+from flask_wtf import FlaskForm
+from wtforms import StringField, SubmitField
+from wtforms.validators import DataRequired, Email
+
+app = Flask(__name__)
+app.secret_key = 'your-secret-key'  # 开发用，生产请用环境变量
+
+class MyForm(FlaskForm):
+    name = StringField('Name', validators=[DataRequired()])
+    email = StringField('Email', validators=[DataRequired(), Email()])  # ✅ 用 StringField + Email()
+    submit = SubmitField('Submit')
+
+@app.route('/', methods=['GET', 'POST'])
+def form():
+    form = MyForm()
+    if form.validate_on_submit():
+        name = form.name.data
+        email = form.email.data
+        return f'Name: {name}, Email: {email}'
+    return render_template('wtf_form.html', form=form)
+
+if __name__ == '__main__':
+    app.run(debug=True)
@@ -0,0 +1,84 @@
+{
+ "cells": [
+  {
+   "metadata": {},
+   "cell_type": "markdown",
+   "source": "## 安装flask",
+   "id": "d08d0aec541e30fb"
+  },
+  {
+   "cell_type": "code",
+   "id": "initial_id",
+   "metadata": {
+    "collapsed": true,
+    "ExecuteTime": {
+     "end_time": "2025-08-29T01:31:15.189520Z",
+     "start_time": "2025-08-29T01:30:52.483942Z"
+    }
+   },
+   "source": "pip install flask",
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Collecting flask\r\n",
+      "  Downloading flask-3.1.2-py3-none-any.whl.metadata (3.2 kB)\r\n",
+      "Collecting blinker>=1.9.0 (from flask)\r\n",
+      "  Downloading blinker-1.9.0-py3-none-any.whl.metadata (1.6 kB)\r\n",
+      "Requirement already satisfied: click>=8.1.3 in /opt/conda/lib/python3.11/site-packages (from flask) (8.1.7)\r\n",
+      "Collecting itsdangerous>=2.2.0 (from flask)\r\n",
+      "  Downloading itsdangerous-2.2.0-py3-none-any.whl.metadata (1.9 kB)\r\n",
+      "Requirement already satisfied: jinja2>=3.1.2 in /opt/conda/lib/python3.11/site-packages (from flask) (3.1.2)\r\n",
+      "Requirement already satisfied: markupsafe>=2.1.1 in /opt/conda/lib/python3.11/site-packages (from flask) (2.1.3)\r\n",
+      "Collecting werkzeug>=3.1.0 (from flask)\r\n",
+      "  Downloading werkzeug-3.1.3-py3-none-any.whl.metadata (3.7 kB)\r\n",
+      "Downloading flask-3.1.2-py3-none-any.whl (103 kB)\r\n",
+      "\u001B[2K   \u001B[90m━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━\u001B[0m \u001B[32m103.3/103.3 kB\u001B[0m \u001B[31m421.7 kB/s\u001B[0m eta \u001B[36m0:00:00\u001B[0m00:01\u001B[0m00:01\u001B[0m\r\n",
+      "\u001B[?25hDownloading blinker-1.9.0-py3-none-any.whl (8.5 kB)\r\n",
+      "Downloading itsdangerous-2.2.0-py3-none-any.whl (16 kB)\r\n",
+      "Downloading werkzeug-3.1.3-py3-none-any.whl (224 kB)\r\n",
+      "\u001B[2K   \u001B[90m━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━\u001B[0m \u001B[32m224.5/224.5 kB\u001B[0m \u001B[31m1.1 MB/s\u001B[0m eta \u001B[36m0:00:00\u001B[0ma \u001B[36m0:00:01\u001B[0m\r\n",
+      "\u001B[?25hInstalling collected packages: werkzeug, itsdangerous, blinker, flask\r\n",
+      "  Attempting uninstall: blinker\r\n",
+      "    Found existing installation: blinker 1.6.3\r\n",
+      "    Uninstalling blinker-1.6.3:\r\n",
+      "      Successfully uninstalled blinker-1.6.3\r\n",
+      "Successfully installed blinker-1.9.0 flask-3.1.2 itsdangerous-2.2.0 werkzeug-3.1.3\r\n",
+      "Note: you may need to restart the kernel to use updated packages.\n"
+     ]
+    }
+   ],
+   "execution_count": 1
+  },
+  {
+   "metadata": {},
+   "cell_type": "code",
+   "outputs": [],
+   "execution_count": null,
+   "source": "",
+   "id": "f9af5a802cbd2abe"
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 2
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython2",
+   "version": "2.7.6"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 5
+}
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <title>Form Example</title>
+</head>
+<body>
+    <form action="/submit" method="post">
+        <label for="name">Name:</label>
+        <input type="text" id="name" name="name">
+        <br>
+        <label for="email">Email:</label>
+        <input type="email" id="email" name="email">
+        <br>
+        <input type="submit" value="Submit">
+    </form>
+</body>
+</html>
@@ -0,0 +1,9 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <title>Hello</title>
+</head>
+<body>
+    <h1>Hello, {{ name }}!</h1>
+</body>
+</html>
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <title>Upload File</title>
+</head>
+<body>
+    <form action="/upload" method="post" enctype="multipart/form-data"> <!--enctype指定表单类型，支持文件上传 -->
+        <label for="file">File:</label>
+        <input type="file" id="file" name="file">
+        <br>
+        <input type="submit" value="Upload">
+    </form>
+</body>
+</html>
@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <title>Form Example</title>
+</head>
+<body>
+    <form method="post">
+        {{ form.hidden_tag() }}
+        <div>
+            {{ form.name.label }}<br>
+            {{ form.name(size=32) }}
+        </div>
+        <div>
+            {{ form.email.label }}<br>
+            {{ form.email(size=32) }}
+        </div>
+        <div>
+            {{ form.submit() }}
+        </div>
+    </form>
+</body>
+</html>
@@ -0,0 +1,16 @@
+import os,sys                       #导入模块
+def add_prefix_files():             #定义函数名称
+    old_names = os.listdir( path )  #取路径下的文件名，生成列表
+    for old_name in old_names:      #遍历列表下的文件名
+        # if  old_name!= sys.argv[0]:  #代码本身文件路径，防止脚本文件放在path路径下时，被一起重命名
+        if old_name.endswith('.mp4'):   #当文件名以.txt后缀结尾时
+            old_name1=old_name.split(".")[0]
+            number = old_name1[-1]
+            name = old_name1[:1]
+            new_name =number+" "+name+".mp4"
+            os.rename(os.path.join(path,old_name),os.path.join(path,new_name))  #重命名文件
+            print (old_name,"has been renamed successfully! New name is: ",new_name)  #输出提示
+
+if __name__ == '__main__':
+    path = f'D:\Program File data\mp4\半音阶口琴'   #运行程序前，记得修改主文件夹路径！
+    add_prefix_files()         #调用定义的函数，注意名称与定义的函数名一致
@@ -0,0 +1,16 @@
+from flask import Flask, request, redirect, url_for
+
+app = Flask(__name__)
+app.secret_key = 'your_secret_key'
+
+@app.route('/upload', methods=['POST'])
+def upload():
+    file = request.files.get('file')
+    if file:
+        filename = file.filename
+        file.save(f'uploads/{filename}')
+        return f'File uploaded successfully: {filename}'
+    return 'No file uploaded'
+
+if __name__ == '__main__':
+    app.run(debug=True)
@@ -0,0 +1,74 @@
+{
+ "cells": [
+  {
+   "metadata": {},
+   "cell_type": "markdown",
+   "source": "### 发送文件",
+   "id": "259126b0b53fdd9f"
+  },
+  {
+   "cell_type": "code",
+   "id": "initial_id",
+   "metadata": {
+    "collapsed": true,
+    "ExecuteTime": {
+     "end_time": "2025-09-02T09:10:07.287763Z",
+     "start_time": "2025-09-02T09:10:07.276787Z"
+    }
+   },
+   "source": [
+    "import requests\n",
+    "\n",
+    "url = 'http://127.0.0.1:5000/upload'  # 你的 Flask 服务地址\n",
+    "file_path = 'D:\\Idea Project\\python\\demo.py'  # 要上传的文件路径\n",
+    "\n",
+    "with open(file_path, 'rb') as f:\n",
+    "    files = {'file': f}\n",
+    "    response = requests.post(url, files=files)\n",
+    "\n",
+    "print(response.text)"
+   ],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "File uploaded successfully: demo.py\n"
+     ]
+    },
+    {
+     "name": "stderr",
+     "output_type": "stream",
+     "text": [
+      "<>:4: SyntaxWarning: invalid escape sequence '\\I'\n",
+      "<>:4: SyntaxWarning: invalid escape sequence '\\I'\n",
+      "C:\\Users\\zy187\\AppData\\Local\\Temp\\ipykernel_3844\\645906349.py:4: SyntaxWarning: invalid escape sequence '\\I'\n",
+      "  file_path = 'D:\\Idea Project\\python\\demo.py'  # 要上传的文件路径\n"
+     ]
+    }
+   ],
+   "execution_count": 5
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 2
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython2",
+   "version": "2.7.6"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 5
+}
@@ -0,0 +1,16 @@
+from flask import Flask,render_template,request
+
+app = Flask(__name__)
+
+@app.route('/')
+def form():  # 展示表格
+	return render_template('form.html')
+
+@app.route('/submit',methods=['POST'])
+def submit(): #提交表格
+	name = request.form.get('name')
+	email = request.form.get('email')
+	return f'Name:{name},Email:{email}'
+
+if __name__ == '__main__':
+	app.run(debug=True)