CODEWITHSUNDEEP
python-3.xtkinter
CodeID
CodeID

Reputation: 35

How can i get data from file path using tkinter and PdFileReader

I use this method :

from PyPDF2 import PdfFileReader
from tkinter import *
from tkinter import filedialog
import os

root = Tk()

def browsefunc():
    filename = filedialog.askopenfilename()
    pathlabel.config(text=filename)

browsebutton = Button(root, text="Browse", command=browsefunc)
browsebutton.pack()

pathlabel = Label(root)
pathlabel.pack()

def get_info(path):
    with open(path, 'rb') as f:
        pdf = PdfFileReader(f)
        info = pdf.getDocumentInfo()
        number_of_pages = pdf.getNumPages()

    print(info)

    author = info.author
    creator = info.creator
    producer = info.producer
    subject = info.subject
    title = info.title


if __name__ == '__main__':
    path = pathlabel.pack()
    get_info(path)

mainloop()

However, i get the following error:

TypeError: invalid file: None

How can i get the file from pathlabel?

Is it possible to open the file from file path?

Upvotes: 2

Views: 700

Answers (1)

Mike - SMT
Mike - SMT

Reputation: 15226

I see a couple problems here.

Delete this:

if __name__ == '__main__':
    path = pathlabel.pack()
    get_info(path)

what this is doing is making path = to the result of pathlabel.pack(). That result will always be None as pack() is always going to return None. Then you are passing None to the get_info() function.

Instead lets call get_info from your brousefunc() functions.

Change brousefunc() to this:

def browsefunc():
    filename = filedialog.askopenfilename()
    pathlabel.config(text=filename)
    get_info(filename)

This will update your label and then also send the correct file path to the get_info function.

If you still wish to use the label's text for the file path you can do path = pathlabel["text"] as this will assign the value of the text to the path.

I can't test PyPDF2 on my end but the below should work for you.

from PyPDF2 import PdfFileReader
import tkinter as tk
from tkinter import filedialog

root = tk.Tk()


def get_info(path):

    with open(path, 'rb') as f:
        pdf = PdfFileReader(f)
        info = pdf.getDocumentInfo()
        number_of_pages = pdf.getNumPages()

    author = info.author
    creator = info.creator
    producer = info.producer
    subject = info.subject
    title = info.title

    print(number_of_pages, author, creator, producer, subject, title)


def browsefunc():
    filename = filedialog.askopenfilename()
    pathlabel.config(text=filename)
    get_info(filename)


browsebutton = tk.Button(root, text="Browse", command=browsefunc)
browsebutton.pack()

pathlabel = tk.Label(root)
pathlabel.pack()

root.mainloop()

To address your question in the comments here is an example that displays in the GUI.

from PyPDF2 import PdfFileReader
import tkinter as tk
from tkinter import filedialog


root = tk.Tk()

label_list = []

def get_info(path):
    with open(path, 'rb') as f:
        pdf = PdfFileReader(f)
        info = pdf.getDocumentInfo()

        label_list[0].config(text=pdf.getNumPages())
        label_list[1].config(text=info.author)
        label_list[2].config(text=info.creator)
        label_list[3].config(text=info.producer)
        label_list[4].config(text=info.subject)
        label_list[5].config(text=info.title)

def browsefunc():
    filename = filedialog.askopenfilename()
    pathlabel.config(text=filename)
    get_info(filename)

browsebutton = tk.Button(root, text="Browse", command=browsefunc)
browsebutton.pack()

pathlabel = tk.Label(root)
pathlabel.pack()

for i in range(6):
    label_list.append(tk.Label(root, text=""))
    label_list[i].pack()


root.mainloop()

Upvotes: 1

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