Question

提前感谢任何帮助。

我有2个.py文件，一个运行GUI，另一个执行基本计算，并使用GUI输入创建图形，然后输出到控制台。这些值打印两次，一次从计算文件打印，再从GUI文件打印。

问题在于，如果我更新输入，则输出不会更新，图表也不会更新。提前感谢您对此的任何帮助。

GUI（test1GUI.py）：

import tkinter as tk
from tkinter import ttk

import csv

def To_Print(self):

    if len(self.e_xf.get()) != 0:

        Write_Inputs_To_CSV(self)

        import test1Eqm

        test1Eqm.Pre_Output()

        Rmin = test1Eqm.Outputs('Rmin')
        xf = float(self.e_xf.get())/100

        print('xf (fromGUI) = ', xf)
        print('Rmin (fromGUI) = ', Rmin)

        del test1Eqm

    else:
        print('Enter All Inputs')

def Write_Inputs_To_CSV(self):

    xf = float(self.e_xf.get())/100


    with open('TestInputs.csv', 'w', newline='') as csvfile:

        filewriter = csv.writer(csvfile, delimiter=',',
                                quotechar='|', quoting=csv.QUOTE_MINIMAL)

        filewriter.writerow(['Variable', 'Value'])

        filewriter.writerow(['xf', xf])


class ChemEngApp(tk.Tk):

    def __init__(self, *args, **kwargs):

        tk.Tk.__init__(self, *args, **kwargs)

        tk.Tk.wm_title(self, "ChemEng")

        container = tk.Frame(self)
        container.pack(side="top", fill="both", expand = True)
        container.grid_rowconfigure(0, weight=1)
        container.grid_columnconfigure(0, weight=1)

        self.frames = {}

        for F in (StartPage, PageOne):

            frame = F(container, self)
            self.frames[F] = frame
            frame.grid(row=0, column=0, sticky="nsew")

        self.show_frame(StartPage)

    def show_frame(self, cont):

        frame = self.frames[cont]
        frame.tkraise()


class StartPage(tk.Frame):

    def __init__(self, parent, controller):
        tk.Frame.__init__(self,parent)

        ##### Making Labels #####

        self.l_Title = ttk.Label(self, text="Start Page")
        self.l_Title.grid(row=0, columnspan = 2)

        self.l_xf = ttk.Label(self, text="xA of Feed (%)")
        self.l_xf.grid(row=1, sticky="e", padx=5)

        ##### Making Entry Boxes #####

        self.e_xf = ttk.Entry(self)
        self.e_xf.grid(row=1, column=1)             

        self.b_Run = ttk.Button(self, text="Click to Run", command=lambda: RUN(self))
        self.b_Run.grid(row=2, column=0, columnspan = 2)  

        def RUN(self):

            To_Print(self)

class PageOne(tk.Frame):

    def __init__(self, parent, controller):
        tk.Frame.__init__(self, parent)

if __name__ == '__main__': 
    app = ChemEngApp()
    app.mainloop()

计算（test1Eqm.py）：

import matplotlib.pyplot as plt
import numpy as np

#--------------------------------------------------------------------------------------------------------------------------------
# Getting variables from .csv 

import csv

Variables = []
Values = []

def getval(x):

    with open('TestInputs.csv', 'rt') as g:
        reader = csv.reader(g)

        # read file row by row
        rowNr = 0
        for row in reader:
            # Skip the header row.
            if rowNr >= 1:
                #g.seek(0) <-- makes it freeze on start up
                Variables.append(row[0])
                Values.append(row[1])

            # Increase the row number
            rowNr = rowNr + 1

    if x == 'xf':
        x = float(Values[0])

    return x

xf = getval('xf')
Rmin = xf*2.5           # Multiplies xf by 2.5

xl = np.linspace(0,1,2)
yl = [xf, Rmin]

def GUI_MT():
    plt.plot(xl, yl, label='Test')
    plt.xlabel('xA')
    plt.ylabel('yA')
    plt.xlim([0, 1])
    plt.ylim([0, Rmin*1.5])
    plt.legend()
    plt.savefig('TestMT.png')
    plt.show()

def Pre_Output():
    print(' ')
    print('New Run')
    GUI_MT()
    print('xf (fromEqm) = ', xf)
    print('Rmin (fromEqm) = ', Rmin)

def Outputs(x):

    a = Rmin

    if x == 'Rmin':
        x = a

    return x

if __name__ == '__main__':
    print('Run GUI instead')    
    print('xf = ', xf)
    print('Rmin = ', Rmin)

Answer 1

test1Eqm.py仅在最初导入时读取CSV文件。再次导入它不会导致执行任何代码，您只需获得对现有模块的另一个引用。基本上，当你想要执行计算时，它的所有代码都需要在你实际调用的函数内部。

此外，使用CSV文件在单个程序中将数据从一个模块传输到另一个模块是完全疯狂的。将数据作为参数传递！

Python - Tkinter GUI更新多个模块

1 个答案: