can't delete entries yet

templates/show_list.html

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+<div class=page>
+  <h1>Todo List</h1>
+</div>
+{% block body %}
+  <form action="{{ url_for('add_task') }}" method=post>
+    <dl>
+      <dt>Create a new todo:
+      <dd><input type=text size=60 name=new_task>
+      <input type=submit value='Create'>
+    </dl>
+  </form>
+  <ul class=entries>
+  <h2>Current Tasks:</h2>
+  <form action="{{ url_for('remove_task') }}" method=post>
+  {% for task in entries %}
+    <input type='checkbox' value='{{ task[0] }}' name=selected>{{ task[1] }}<br></input>
+    {% else %}
+      <li><strong>You are all caught up!</strong>
+  {% endfor %}
+  <input type='submit' value="Delete Selected Tasks">
+  </form>
+  </ul>
+{% endblock %}

to_do.py

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+import sqlite3
+from contextlib import closing
+from flask import Flask, request, session, g, redirect, url_for, \
+     abort, render_template, flash
+
+DATABASE = '/tmp/flaskr.db'
+DEBUG = True
+SECRET_KEY = 'development key'
+USERNAME = 'joel'
+PASSWORD = 'password'
+
+app = Flask(__name__)
+app.config.from_object(__name__)
+
+
+def connect_db():
+    return sqlite3.connect(app.config['DATABASE'])
+
+
+def init_db():
+    with closing(connect_db()) as db:
+        with app.open_resource('todo_schema.sql', mode='r') as f:
+            db.cursor().executescript(f.read())
+        db.commit()
+
+
+@app.before_request
+def before_request():
+    g.db = connect_db()
+
+
+@app.teardown_request
+def teardown_request(exception):
+    db = getattr(g, 'db', None)
+    if db is not None:
+        db.close()
+
+
+@app.route('/')
+def show_list():
+    cur = g.db.execute('select id, task from entries order by id desc')
+    entries = [(row[0], row[1]) for row in cur.fetchall()]
+    return render_template('show_list.html', entries=entries)
+
+
+@app.route('/add', methods=['POST'])
+def add_task():
+    g.db.execute('insert into entries (task) values (?)', [request.form['new_task']])
+    g.db.commit()
+    flash('New task added to the list')
+    return redirect(url_for('show_list'))
+
+
+@app.route('/delete', methods=['POST'])
+def remove_task():
+    for checked in request.form.getlist('selected'):
+        g.db.execute('delete from entries where id = ?', checked)
+    g.db.commit()
+    flash('Selected tasks have been removed')
+    return redirect(url_for('show_list'))
+
+
+
+if __name__ == '__main__':
+    app.run()

todo_schema.sql

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+drop table if exists entries;
+create table entries (
+  id integer primary key autoincrement,
+  task text
+);