官方都没找到如何给默认的表格排序。。。结合jquery的例子改了下，默认的put_table 没有<thead>，所以需要单独分离出来head 和 rows，然后在拼接回去。

# -*- encoding: utf-8 -*-"

from pywebio.input import *
from pywebio.output import *
from pywebio import config
from flask import Flask

app = Flask(__name__)
app.config.from_object('flask_config')

js_code = '''
    $(document).on('click','th',function(){
        var table = $(this).parents('table').eq(0);
        var head = table.find('tr:eq(0)').toArray()
        var rows = table.find('tr:gt(0)').toArray().sort(comparer($(this).index()));
        this.asc = !this.asc;
        if (!this.asc){rows = rows.reverse();}
        table.children('tbody').empty().html(head).append(rows);
    });
    function comparer(index) {
        return function(a, b) {
            var valA = getCellValue(a, index), valB = getCellValue(b, index);
            return $.isNumeric(valA) && $.isNumeric(valB) ?
                valA - valB : valA.localeCompare(valB);
        };
    }
    function getCellValue(row, index){
        return $(row).children('td').eq(index).text();
    }
'''

@config(js_code=js_code)
def test():
    put_table([
        ['Commodity', 'Price', 'Count'],
        ['Apple', '5.5', 4],
        ['Banana', '7', 2],
        ['orange', '3', 5]
    ])

if __name__ == '__main__':
    # `task_func` is PyWebIO task function
    app.add_url_rule('/', 'test', webio_view_local(test), methods=['GET', 'POST'])
    app.run(host='0.0.0.0', port=5000)

参考文档：
https://www.hujiangtao.cn/2017/03/jquery-table-order/#%E7%9B%AE%E5%BD%95
https://pywebio.readthedocs.io/en/latest/guide.html