[Numpy-discussion] Help to process a large data file

[frank wang]

Hi, 
 
I have a large data file which contains 2 columns of data. The two columns only have zero and one. Now I want to cound how many one in between if both columns are one. For example, if my data is:
 
1 0
0 0
1 1
0 0     
0 1    x
0 1    x
0 0
0 1    x
1 1
0 0
0 1    x
0 1    x
1 1
 
Then my count will be 3 and 2 (the numbers with x).
 
Are there an efficient way to do this? My data file is pretty big.
 
Thanks
 
Frank
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