Python command to get last part file
<p>I have .dat file look like:</p>

<p>STEP1
a1   b1
a2   b2
a3   b3</p>

<p>STEP2
a4   b4
a5   b5
.
.
.
STEPn
an   bn
am   bm</p>

<p>Each step has two column (a and b). I need a scrip, which looks last step and gives me "an" and "am"</p>

<p>Thank you for the help! </p>
