PySimpleGUI：极简的GUI构造工具

import PySimpleGUI as sg
import math

layout = [[sg.Text('速度：',size=(5,1)),sg.InputText('1.0'),sg.Text('m/s')],
        [sg.Text('密度：',size=(5,1)),sg.InputText('1.225'),sg.Text('kg/m3')],
        [sg.Text('粘度：',size=(5,1)),sg.InputText('1.8375e-5'),sg.Text('kg/m-s')],
        [sg.Text('长度：',size=(5,1)),sg.InputText('1.0'),sg.Text('m')],
        [sg.Text('y+：',size=(5,1)),sg.InputText('1.0')],
        [sg.Button("计算"),sg.Button("退出")],
        [sg.Text('ΔS=',size=(5,1)),sg.InputText("",key='_DeltaS_'),sg.Text('m')],
        [sg.Text('Re=',size=(5,1)),sg.InputText("",key="_Re_")]
        ]

window = sg.FlexForm('Y+计算器').Layout(layout)
while True:
   button, values = window.Read()
   if button is None or button =='退出':
       break
   else:
       u = eval(values[0])
       rho = eval(values[1])
       mu = eval(values[2])
       L = eval(values[3])
       yplus = eval(values[4])

       Re = rho*u*L/mu;

       cf = 0.026/pow(Re,1/7);
       Twall = cf*rho * u * u/2;
       ufric = pow(Twall/rho,0.5);

       deltas = yplus * mu / ufric/rho;
       window.find_element("_Re_").Update(Re)
       window.find_element("_DeltaS_").Update((str(deltas)))
window.Close()