Question

Consider a binary file, items.dat, containing records stored in the given format:

{item_id: [item_name, amount]}

Write a function, Copy_new(), that copies all records whose amount is greater than 1000 from items.dat to new_items.dat.

Answer 1

import pickle 
def Copy_new(): 
fr=open("items.dat","rb") 
fw=open("new_items.dat","wb") 
try: 
       while True: 
       irec=pickle.load(fr) 
       for k in irec: 
              if int(irec[k] [1]) > 1000: 
              pickle.dump(irec,fw) 
       except EOFError: 
       pass 
       fr.close() 
fw.close()