最近写的一些类，Python的

mport mysql.connector as ps

class MysqlHelper:
    def __init__(self, host, port ,user, password, database, charset):
        self.host = host
        self.port=port
        self.user = user
        self.password = password
        self.database = database
        self.charset = charset
        self.db = None
        self.curs = None
    # 数据库连接
    def open(self):
        try:
            self.db = ps.connect(host=self.host, port=self.port, user=self.user, password=self.password,
                                 database=self.database, charset=self.charset)
            self.curs = self.db.cursor()

        except Exception as e:
            print("连接数据库失败："+str(e))
    # 数据库关闭
    def close(self):
        self.curs.close()
        self.db.close()
    # 数据增删改
    def runSQL(self, sql):
        self.open()
        try:
            self.curs.execute(sql)
            self.db.commit()
        except Exception as e:
            print("runSQL运行[" + str(sql) + "]出现错误" + str(e))
            self.db.rollback()
        self.close()
    # 数据查询，返回键名和对应数据组成的字典
    def findDictionary(self, sql):
        self.open()
        try:
            self.curs.execute(sql)
            index = self.curs.description
            result = []
            for res in self.curs.fetchall():
                row = {}
                for i in range(len(index)):
                    row[index[i][0]] = res[i]
                result.append(row)
            self.close()
            return result
        except Exception as e:
            print("find运行[" + str(sql) + "]出现错误" + str(e))
    #根据sql语句查询出数据，不包含键名
    def find(self, sql):
        self.open()
        try:
            self.curs.execute(sql)
            result = self.curs.fetchall()
            self.close()
            return result
        except Exception as e:
            print("find运行[" + str(sql) + "]出现错误" + str(e))
    # 根据表格名查询键名
    def findColumeName(self, tableName):
        self.open()
        try:
            sql = "select * from "+tableName;
            self.curs.execute(sql)
            index = self.curs.description
            self.curs.fetchall()
            self.close()
            result = []
            for i in range(len(index)):
                result.append(index[i][0])
            return result
        except Exception as e:
            print("find运行[" + str(sql) + "]出现错误" + str(e))

import MysqlHelper
import time

class retrospect:

    def __init__(self):
       global db
       db = MysqlHelper.MysqlHelper("127.0.0.1", 3306, "root", "123456", "test", "utf8")
    def test(self):
        start = time.clock()
        sql = "select * from firstState"
        result = db.findDictionary(sql)
        #print (result[0])
        # for x in result:
        #     print(x)
        end = time.clock()
        print('Running time: %s Seconds' % (end - start))
        return result

re = retrospect()

re.test()

import threading
import time
import Retrospect
class testThread():

# 方法一：将要执行的方法作为参数传给Thread的构造方法
    def action(self,func):
        global re
        re=[]
        while(1):
            time.sleep(1)
            print ("123")
            result = func()
            if(re != result[0]):
                re=result[0]
                print(result[0])
    def start(self):
        t = threading.Thread(target=self.action(Retrospect.retrospect().test))#python支持把函数名传进去运行
        t.start()
t=testThread()
t.start()

import sys
from PyQt5.QtWidgets import *
from PyQt5.uic import loadUi
from PyQt5.QtGui import QColor
import Retrospect
import threading
import time

class MainWindow(QMainWindow):
    def __init__(self, parent=None):
        super(MainWindow, self).__init__(parent)
        loadUi("main.ui", self)
        self.screen = QDesktopWidget().screenGeometry()
        self.width = self.screen.width()
        self.height = self.screen.height()
        # self.table()
        self.tableWidget.verticalHeader().setVisible(False)  # 隐藏垂直表头
        # self.tableWidget.horizontalHeader().setDefaultSectionSize(300)#设置列宽
        self.tableWidget.horizontalHeader().setStretchLastSection(1)  # 设置填充满横向
        self.tableWidget.horizontalHeader().setStyleSheet("QHeaderView::section{background:skyblue;}")
        self.tableWidget.verticalHeader().setDefaultSectionSize(90)  # 设置默认行高
        self.tableWidget.setHorizontalHeaderLabels(['Item', 'Value'])  # 设置表头样式
        self.tableWidget.setEditTriggers(QAbstractItemView.NoEditTriggers)  # 设置不允许操作
        # self.table = QTableWidget()
    def table(self):
         self.tableWidget.setColumnCount(2)
         self.tableWidget.setRowCount(6)

    def btn_click(self):
        try:
            self.table()
            re = Retrospect.retrospect().test()
            for x in re:
                print(x)
            data1 = ['State:', 'Total:', 'Pass:', 'Yield:', 'Test Time:', 'SN:']
            data2 = ['Idle', '1', '2', '3', '4', '']


            for i in range(6):
                newItem1 = QTableWidgetItem(data1[i])
                self.tableWidget.setItem(i, 0, newItem1)
                newItem2 = QTableWidgetItem(data2[i])
                self.tableWidget.setItem(i, 1, newItem2)
                if (i == 5):
                    newItem1.setBackground(QColor(255, 255, 0))
                    # newItem2.setBackground(QColor(255, 255, 0))
                    # self.sta_state[j].editItem(newItem2)
                    pass
        except Exception as e:
            print(str(e))

app = QApplication(sys.argv)
w = MainWindow()
w.show()
sys.exit(app.exec_())