flask sessions

1from flask import Flask, session, redirect, url_for, request
2from markupsafe import escape
3
4app = Flask(__name__)
5
6# Set the secret key to some random bytes. Keep this really secret!
7app.secret_key = b'_5#y2L"F4Q8z\n\xec]/'
8
9@app.route('/')
10def index():
11    if 'username' in session:
12        return 'Logged in as %s' % escape(session['username'])
13    return 'You are not logged in'
14
15@app.route('/login', methods=['GET', 'POST'])
16def login():
17    if request.method == 'POST':
18        session['username'] = request.form['username']
19        return redirect(url_for('index'))
20    return '''
21        <form method="post">
22            <p><input type=text name=username>
23            <p><input type=submit value=Login>
24        </form>
25    '''
26
27@app.route('/logout')
28def logout():
29    # remove the username from the session if it's there
30    session.pop('username', None)
31    return redirect(url_for('index'))
32

1from flask import Flask, session
2from flask.ext.session import Session
3
4app = Flask(__name__)
5# Check Configuration section for more details
6SESSION_TYPE = 'redis'
7app.config.from_object(__name__)
8Session(app)
9
10@app.route('/set/')
11def set():
12    session['key'] = 'value'
13    return 'ok'
14
15@app.route('/get/')
16def get():
17    return session.get('key', 'not set')
18

1session.pop('username', None)
2

1 @app.route("/login",methods = ["POST","GET"])  
2    def login():  
3        if request.method == "POST":  
4            try:   
5                Email = request.form["email"]
6                pwd = request.form["pwd"]    
7                with sqlite3.connect("Account.db") as con:  
8                    cur = con.cursor()
9                    print("Connection test")   
10                    cur.execute("SELECT * FROM Account WHERE Email= ? and Password= ?",(Email, pwd))
11                    row = cur.fetchone()
12                    print("query test")  
13                    while row is not None:
14                        session['email']=request.form['email']  
15                        print(row[1])
16                        return render_template("success.html",msg = msg)
17                    else:
18                        msg = "sorry wrong id"
19                        return render_template("failure.html",msg = msg)
20            except:  
21                con.rollback()  
22                msg = "problem"  
23if 'email' in session:
24        email = session['email']   
25        return render_template("view.html") 
26    else:
27        return '<p>Please login first</p>'  

1 @app.route("/login",methods = ["POST","GET"])  
2    def login():  
3        if request.method == "POST":  
4            try:   
5                Email = request.form["email"]
6                pwd = request.form["pwd"]    
7                with sqlite3.connect("Account.db") as con:  
8                    cur = con.cursor()
9                    print("Connection test")   
10                    cur.execute("SELECT * FROM Account WHERE Email= ? and Password= ?",(Email, pwd))
11                    row = cur.fetchone()
12                    print("query test")  
13                    while row is not None:
14                        session['email']=request.form['email']  
15                        print(row[1])
16                        return render_template("success.html",msg = msg)
17                    else:
18                        msg = "sorry wrong id"
19                        return render_template("failure.html",msg = msg)
20            except:  
21                con.rollback()  
22                msg = "problem"  
23#In the other function do :
24 if 'email' in session:
25        email = session['email']   
26        return render_template("view.html") 
27    else:
28        return '<p>Please login first</p>'