Question

You are utilizing the pickle.load function to load objects into a program from a file. However, your program raises an exception as soon as the end of the file is reached. What must you do?

Answer 1

Answer:

When the program raises an exception as soon as the end of the is reached, this exception makes the input process difficult. We have no specific or clear way to encounter the end of the file before the exception is raised.

So to resolve this Python's try except statement can be used. This statement catches the exception and enables the program to recover. We can construct an input file loop. This loop will keep loading objects until the end of the file is detected. Below is an example to load objects from the file into a new list.

lst=list()

fileObj = open("item.dat","rb")

while True:

try:

      item= pickle.load(fileObj)

      lst.append(item)

      except EOFError:

               fileObj.close()

               break

print(lst)

The file name is item.dat and new list is named as lst. When the end of the file is encountered EOFError is raised and except clause with EOFError closes the input file and breaks out of the loop.