此GUI允许用户打开文件浏览器并选择所需的文件,将其显示在空白字段上,然后在按下打开后打开文件.我是
python的新手,并尝试在self.filename上放置print tkFileDialog.askopenfilename(),但这会导致语法错误.请帮忙.谢谢!
我的问题如下:
1)为什么我的文件浏览器在按下“文件浏览器”按钮后打开两次.
2)另外,如何在文件空白而不是python命令提示符中声明所选文件的目录?
按ok按钮后,我想将来打开文件.
from Tkinter import *
import csv
import tkFileDialog
class Window:
def __init__(self, master):
self.filename=""
csvfile=Label(root, text="Load File:").grid(row=1, column=0)
bar=Entry(master).grid(row=1, column=1)
#Buttons
y=12
self.cbutton= Button(root, text="OK", command=self.process_csv) #command refer to process_csv
y+=1
self.cbutton.grid(row=15, column=3, sticky = W + E)
self.bbutton= Button(root, text="File Browser", command=self.browsecsv) #open browser; refer to browsecsv
self.bbutton.grid(row=1, column=3)
def browsecsv(self):
from tkFileDialog import askopenfilename
Tk().withdraw()
self.filename = askopenfilename()
print tkFileDialog.askopenfilename() # print the file that you opened.
def callback():
abc = askopenfilename()
execfile("input.xlsx")
def process_csv(self):
if self.filename:
with open(self.filename, 'rb') as csvfile:
logreader = csv.reader(csvfile, delimiter=',', quotechar='|')
rownum=0
for row in logreader:
NumColumns = len(row)
rownum += 1
Matrix = [[0 for x in xrange(NumColumns)] for x in xrange(rownum)]
root = Tk()
window=Window(root)
root.mainloop()
最佳答案 你的两个问题都是相关的.问题出在您的browsecsv(self)方法中.您的目录已存储在self.filename中,无需再次调用askopenfilename().这就是文件浏览器打开两次的原因.此外,要在条目中设置文本,您需要为其分配一个文本变量.
self.entryText = StringVar()
self.bar = Entry(root, textvariable=self.entryText ).grid(row=1, column=1)
然后,您可以将其分配给方法中的条目:
def browsecsv(self):
from tkFileDialog import askopenfilename
Tk().withdraw()
self.filename = askopenfilename()
self.entryText.set(self.filename)