[Tkinter] Unable to get current contents of the entry field where the content is the file path

[pmpinaki]

My intention , allow user to select a file from the file explorer by clicking a button on Tkinter window application. I handled this button command using filedialog library. So once the user select the file, the file path will be automatically entered in the entry field. I want to get that file path details from the entry field.
However, whenever I try to fetch the current content of Entry field, it returns an empty string. Below is my Code:

from tkinter import *
from tkinter import filedialog
import time

''' Enabling High DPI in Windows 10 System'''
try:
    from ctypes import windll

    windll.shcore.SetProcessDpiAwareness(1)
except:
    pass

filepath = ''
root = Tk()  # Initializing Tk root widget
root.title("Trace log Analysis")  # Setting the title of widget
root.geometry("600x300")  # Setting the size of the window
root.resizable(0, 0)  # Restricting user to resize the window in x and y direction
root.configure(background="powder blue")
info_display = StringVar()
localtime = time.asctime(time.localtime(time.time()))


def main():
    #global info_display
    # layout all of the main containers
    root.grid_rowconfigure(1, weight=1)
    root.grid_columnconfigure(0, weight=1)
    # ####### Label- Display local time ################################################################################
    lbl_localtime = Label(root, font=("arial", 10, "bold"), text=localtime, fg="steel blue", bd=5, anchor='w')
    lbl_localtime.pack(side=TOP)
    # Splitting the window in to frames ################################################################################
    fileselection = LabelFrame(root)
    fileselection.pack(padx=0, pady=0, side=TOP)
    fileselection.config(relief=GROOVE, text="Select log file",
                         borderwidth=5,
                         background="white", fg="blue",
                         font="Helvetica 10 bold",
                         height=100, width=600)

    other_options = LabelFrame(root)
    other_options.pack(side=LEFT, pady=0, fill=X)
    other_options.config(relief=SUNKEN, text="Output", borderwidth=5, background="white", fg="blue",
                         font="Helvetica 10 bold",
                         height=100, width=400
                         )
    #  Label Info to display current date and time on window   #######################################
    lbl_info = Label(fileselection, font=("arial", 8, "bold"), text="File Name:", fg="steel blue", bd=5)
    lbl_info.pack(side=LEFT, padx=5)
    # Entry Field: State is disabled so that user can only select file from file explorer
    txt_filepath = Entry(fileselection, font=("arial", 8, "bold"), textvariable=info_display,
                         insertwidth=2,
                         bg="white", justify=LEFT,
                         state=DISABLED,
                         width=50)
    txt_filepath.pack(side=LEFT, padx=12, pady=0)
    #  Add browse button to select file from file explorer
    browse_btn = Button(fileselection, text="Browse file...", justify=CENTER, anchor=E,
                        width=10, height=0, font=("arial", 8, "bold"))
    browse_btn.pack(side=RIGHT, padx=5)

    # Configure the button command.
    # When user click Browse file... button, file explorer open and user can navigate to directory to select log file
    browse_btn.config(command=file_dialog)

    print(info_display.get())
    # Get the Entry field data
    print(txt_filepath.get())

    root.mainloop()


def file_dialog():
    global filepath
    global info_display
    getfile = filedialog.askopenfilename(initialdir="/", title="Select log file",
                                         filetypes=(("log files", "*.log"), ("all files", "*.*")))
    filepath = '' + getfile
    info_display.set(filepath)


if __name__ == '__main__':
    main()

When I ran the above code, I could able to select the file and file path gets displayed on Entry widget. But when I print

print(txt_filepath.get())

output is blank.