问题
i'm coding on a Linux debian machine with python 2.4.
My neighbour with Windows XP and python 2.4.4
He can run this code:
w1, w2, w3 = unpack("LLL", pack("LLHH", localtime, ipddr, counter, aid))
But when i try this code i become this error:
w1, w2, w3 = unpack("LLL", pack("LLHH", localtime, ipddr, counter, aid))
struct.error: unpack str size does not match format
Can it be the Version of python or maybe the system?
回答1:
Use the I format code instead of L.
On your Linux machine, L isn't twice as long as H, it's four times as long -- 8 bytes (64 bits) instead of 4 bytes (32 bits).
I should be 4 bytes (32 bits) on both.
Edit: Make sure to read eryksun's comment.
来源：https://stackoverflow.com/questions/7583687/problems-with-python-2-4-and-2-4-4-in-struct-unpack-and-win-lin