Errors

[djalmabright]

19:31 ~/blocktools $ python parser.py
Blocksize: %u
Traceback (most recent call last):
File "parser.py", line 5, in
print("Blocksize:\t %u") % uint4(blockfile,)
TypeError: unsupported operand type(s) for %: 'NoneType' and 'int'
19:33 ~/blocktools $ python sight.py 1M.dat
Traceback (most recent call last):
File "sight.py", line 5, in
from block import Block, BlockHeader
File "/home/djalmabright/blocktools/block.py", line 6, in
class BlockHeader:
File "/home/djalmabright/blocktools/block.py", line 9, in BlockHeader
self.previousHash = hash32(blockchain)
NameError: name 'blockchain' is not defined

[tenthirtyone]

Not enough info here to do anything productive. Any help?