numpy/numpy — pull request #5090 by styra (2014-09-20 16:08:21+00:00)
Title: Update function genfromtxt: add keyword `nrows`

Add keyword `nrows` to specify the number of rows to read.
1. We should not use keywords `nrows` and `skip_footer` in the same time.
2. If there's not enough lines (less than nrows) to read, an exception would raise.