text: import PyPDF2
  import re
  import os
  from multiprocessing import Pool
  
  example = '/home/joe/PycharmProjects/PDFsearch'
  
  def find_pdfs(directory):
      pdfs = []
      for foldername, subfolder, files in os.walk(directory):
          for file in files:
              if '.pdf' in file:
                  pdfs.append(foldername + '/' + file)
      return pdfs
  
  def search_pdf(critera):
      search_term, path = critera
      pdf = PyPDF2.PdfFileReader(path)
      for n in range(0, pdf.getNumPages()):
          page = pdf.getPage(n)
          text = page.extractText().lower()
          search = re.search(search_term, text)
          if search != None:
              print(path)
              break
  
  
  
  term = input('Enter search word: ')
  choice = int(input('1.	SC\n2.	HSC \nSelect a folder:  '))
  
  thread_count = int(input('How many threads would you like to devote? '))
  
  if choice == 1:
      cho = '/media/raja/316E396D3C478D8A/pdrv/computer science/SC/'
  else:
      cho = '/media/raja/316E396D3C478D8A/pdrv/computer science/HSC/'
  
  pdfs = find_pdfs(cho)
  
  search_crit = []
  for pdf in pdfs:
      search_crit.append((term, pdf))
  
  with Pool(thread_count) as p:
          p.map(search_pdf, search_crit)
  