Tee's program that loads some data

tee.py

#!/usr/bin/env python


def load_from_many(pattern):
    """
    Take a pattern and return a numpy array containing the concatenation of all
    the files matching that pattern. Only the first column and rows after the
    first are returned, and the data values are offset by the difference between
    the first and second columns of the first row.
    """
    from numpy import array, loadtxt
    from glob import glob

    all_data = [ ]

    for fname in glob(pattern):
        data = loadtxt(fname)
        dt = data[0,1] - data[0,0]
        all_data += (data[1:,0] - data[0,0]).tolist()

    return array(all_data)


if __name__ == "__main__":
    load_from_many("data/*.dat")