@app.get('/')
def index(req, res):
    """
    Return root page of website.
    """
    req.session['counter'] = int(req.session.get('counter', -1)) + 1
    print(" -- Session '{}' returned {} times".format(req.session['id'],
                                                      req.session['counter']))
    msg = (req.session['counter']) % "Hello!! You've been here [[%s]] times"
    res.send_text(msg)
    req.session.save()
dataset/ETHPy150Open pyGrowler/Growler/examples/example1/__main__.py/index/swapped operands of `%`