import sys
import fitz
import tkinter
import os

from tkinter import filedialog as fd


filename = fd.askopenfilename()
pdf_document = fitz.open(filename)

terms='СМЕТА'



with open("outdata.txt", "w") as outputFile:
    for current_page in range(len(pdf_document)):
     page = pdf_document.loadPage(current_page)
     if page.searchFor (terms):
        #вывод в консоль
        print("%s found on page %i" % (terms, current_page))
        #вывод в txt
        print("%s found on page %i" % (terms, current_page), file=outputFile)
    outputFile.close()
    os.system('outdata.txt')