reading a file line by line using a generator

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1def read_file(path, block_size=1024): 
2    with open(path, 'rb') as f: 
3        while True: 
4            piece = f.read(block_size) 
5            if piece: 
6                yield piece 
7            else: 
8                return
9
10for piece in read_file(path):
11    process_piece(piece)
12

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