first commit flask.

.vscode/launch.json

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+{
+  // Use IntelliSense to learn about possible attributes.
+  // Hover to view descriptions of existing attributes.
+  // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+  "version": "0.2.0",
+  "configurations": [
+
+    {
+      "name": "Python: Current File",
+      "type": "python",
+      "request": "launch",
+      "program": "${file}"
+    },
+    {
+      "name": "Python: Attach",
+      "type": "python",
+      "request": "attach",
+      "localRoot": "${workspaceFolder}",
+      "remoteRoot": "${workspaceFolder}",
+      "port": 3000,
+      "secret": "my_secret",
+      "host": "localhost"
+    },
+    {
+      "name": "Python: Terminal (integrated)",
+      "type": "python",
+      "request": "launch",
+      "program": "${file}",
+      "console": "integratedTerminal"
+    },
+    {
+      "name": "Python: Terminal (external)",
+      "type": "python",
+      "request": "launch",
+      "program": "${file}",
+      "console": "externalTerminal"
+    },
+    {
+      "name": "Python: Django",
+      "type": "python",
+      "request": "launch",
+      "program": "${workspaceFolder}/manage.py",
+      "args": [
+        "runserver",
+        "--noreload",
+        "--nothreading"
+      ],
+      "debugOptions": [
+        "RedirectOutput",
+        "Django"
+      ]
+    },
+    {
+      "name": "Python: Flask (0.11.x or later)",
+      "type": "python",
+      "request": "launch",
+      "module": "flask",
+      "env": {
+        "FLASK_APP": "app.py"
+      },
+      "args": [
+        "run",
+        "--no-debugger",
+        "--no-reload"
+      ]
+    },
+    {
+      "name": "Python: Module",
+      "type": "python",
+      "request": "launch",
+      "module": "module.name"
+    },
+    {
+      "name": "Python: Pyramid",
+      "type": "python",
+      "request": "launch",
+      "args": [
+        "${workspaceFolder}/development.ini"
+      ],
+      "debugOptions": [
+        "RedirectOutput",
+        "Pyramid"
+      ]
+    },
+    {
+      "name": "Python: Watson",
+      "type": "python",
+      "request": "launch",
+      "program": "${workspaceFolder}/console.py",
+      "args": [
+        "dev",
+        "runserver",
+        "--noreload=True"
+      ]
+    },
+    {
+      "name": "Python: All debug Options",
+      "type": "python",
+      "request": "launch",
+      "pythonPath": "${config:python.pythonPath}",
+      "program": "${file}",
+      "module": "module.name",
+      "env": {
+        "VAR1": "1",
+        "VAR2": "2"
+      },
+      "envFile": "${workspaceFolder}/.env",
+      "args": [
+        "arg1",
+        "arg2"
+      ],
+      "debugOptions": [
+        "RedirectOutput"
+      ]
+    }
+  ]
+}

.vscode/settings.json

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+{
+    "python.pythonPath": "/home/leslie/Desktop/python3_config/bin/python",
+}

app.py

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+#!/usr/bin/env python3
+# coding:utf-8
+from flask import Flask, render_template, request
+from flask_bootstrap import Bootstrap
+from flask_moment import Moment
+app = Flask(__name__)
+bootstrap = Bootstrap(app=app)
+moment = Moment(app=app)
+
+@app.route("/")
+def index():
+    return render_template("index.html")
+
+
+@app.route('/user/<name>')
+def user(name):
+    age = request.args.get("age")
+    return render_template('user.html', name=name, age=age)
+
+
+@app.route('/inheritance')
+def inheritance():
+    return render_template('inheritance.html')
+
+
+@app.errorhandler(404)
+def page_not_found(e):
+    return render_template('404.html'), 404
+
+
+@app.errorhandler(500)
+def internal_server_error(e):
+    return render_template('500.html'), 500
+
+
+if __name__ == "__main__":
+    app.run(host='0.0.0.0', port=8080, debug=True)

templates/404.html

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+{% extends "base.html" %} {% block title %} Flasky - Page Not Found {% endblock title
+%} {% block page_content %}
+<div class="page-header">
+  <h1>Not Found</h1>
+</div>
+{% endblock page_content %}

templates/500.html

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+{% extends "base.html" %} {% block title %} Flasky - Server Internal Error {% endblock
+title %} {% block page_content %}
+<div class="page-header">
+  <h1>Server Internal error</h1>
+</div>
+{% endblock page_content %}

templates/base.html

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+{% extends "bootstrap/base.html" %} {% block title %} Flasky {% endblock title %}
+{% block head %} {{super()}} {{moment.include_moment()}}
+<link rel="shortcut icon" href="{{ url_for('static', filename='favicon.ico') }}"
+  type="image/x-icon">
+<link rel="icon" href="{{ url_for('static', filename='favicon.ico') }}" type="image/x-icon"> {% endblock head %} {% block navbar %}
+<div class="navbar navbar-inverse" role="navigation">
+  <div class="navbar-header"> <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse"> <span class="sr-only">Toggle navigation</span> <span class="icon-bar"></span> <span class="icon-bar"></span>
+      <span class="icon-bar"></span>
+      <span class=></span>
+    </button>
+    <a href="/" class="navbar-brand">Flasky</a>
+  </div>
+  <div class="navbar-collapse collapse">
+    <ul class="nav navbar-nav">
+      <li><a href="/">Home</a></li>
+    </ul>
+  </div>
+</div>
+{% endblock navbar %} {% block content %}
+<div class="container">
+  {% block page_content %} {% endblock page_content %}
+</div>
+{% endblock content %}

templates/index.html

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+<!DOCTYPE html>
+<html>
+<head>
+    <meta charset="utf-8" />
+    <meta http-equiv="X-UA-Compatible" content="IE=edge">
+    <title>My first awesome Flask</title>
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <link rel="stylesheet" type="text/css" media="screen" href="main.css" />
+</head>
+<body>
+    <h1>Hello Flask!</h1>    
+</body>
+</html>

templates/inheritance.html

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+{%extends "base.html" %}
+{%block title%}
+Base
+{%endblock%}
+{%block head%}
+{{super()}}
+<style></style>
+{%endblock%}
+{%block body%}
+<h1>Just to see the fucking jinja.</h1>
+{%endblock%}

templates/user.html

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+{% extends "base.html" %} {% block title %} Flasky {% endblock title %} {% block
+page_content %}
+<h1>
+  Hello,{{name}}
+  You age is {{age}}!!
+</h1>
+{% endblock page_content %}