Question

我创建了一个GUI，我在其中读取CSV文件，然后计算液体输出。在 CSVImport 功能中，有一个打印语句，其中计算输出。我想在我的GUI中使用文本小部件打印它。我怎样才能做到这一点？我的代码如下：

import csv
from tkinter import *
from tkinter.filedialog import askopenfilename
from tkinter.messagebox import showwarning, showinfo
import datetime

#csv_file = csv.reader(open("C:\Users\Lala Rushan\Downloads\ARIF Drop Monitoring Final\ARIF Drop Monitoring Final\DataLog.csv"))
from Tools.scripts.treesync import raw_input
class App(Frame):
    def __init__(self, master):
        Frame.__init__(self, master)


        button1 = Button(self, text="Browse for a file", command=self.askfilename)
        button2 = Button(self, text="Measure The Urine", command=self.takedate)
        button3 = Button(self, text="Exit", command=master.destroy)
        button1.grid()
        button2.grid()
        button3.grid()
        l1 = Label(self, text="Enter from date (2017/01/01)")
        l1.grid()

        self.userInputFromRaw = Entry(self)
        self.userInputFromRaw.grid()
        l2 = Label(self, text="Enter to date (2017/01/01)")

        l2.grid()
        self.userInputToRaw = Entry(self)
        self.userInputToRaw.grid()



        self.grid()

    def askfilename(self):
        in_file = askopenfilename()
        if not in_file.endswith(('.CSV')):
            showwarning('Are you trying to annoy me?', 'How about giving me a CSV file, genius?')
        else:
            self.in_file=in_file

    def CsvImport(self,csv_file):


        dist = 0
        for row in csv_file:
            _dist = row[0]
            try:
                _dist = float(_dist)
            except ValueError:
                _dist = 0

            dist += _dist
        print ("Urine Volume is: %.2f" % (_dist*0.05))


    def takedate(self):
        from_raw = self.userInputFromRaw.get()
        from_date = datetime.date(*map(int, from_raw.split('/')))
        print ('From date: = ' + str(from_date))
        to_raw = self.userInputToRaw.get()
        to_date = datetime.date(*map(int, to_raw.split('/')))
        in_file = ("H:\DataLog.csv")
        in_file= csv.reader(open(in_file,"r"))

        for line in in_file:
            _dist = line[0]
            try:
                file_date =  datetime.date(*map(int, line[1].split(' ')[1].split('/')))
                if from_date <= file_date <= to_date:
                    self.CsvImport(in_file)

            except IndexError:
                pass

root = Tk()
root.title("Urine Measurement")
root.geometry("500x500")
app = App(root)
root.mainloop()

Answer 1

首先，您必须拥有Text小部件。在App.__init__函数中，您应该添加如下内容：

self.output = Text(self)
self.output.grid()

要将文字追加到窗口小部件，您可以使用Text.insert;在App.CsvImport函数中，您应该将对print的调用替换为：

self.output.insert(END, "Urine Volume is: %.2f" % (_dist*0.05))

如果您需要对Tkinter文本小组件进行一些参考，this可能会有所帮助，以及StackOverflow上的各种问题。

值得注意的是，由于您只显示一行，因此使用Label可能更方便。正常创建标签，当您想要更改文本时，可以使用：

self.output["text"] = "Urine Volume is: %.2f" % (_dist*0.05)

如何在Python中将函数的值显示为GUI小部件？

1 个答案: