title: Pandas read csv data type
body: <p>I'm trying to read a csv with pandas using the read_csv command.  However, one of my columns is a 15 digit number which is read in as a float and then truncated to exponential notation.  So the entries in this column become 2.09228E+14 instead of the 15 digit number I want.  I've tried reading it as a string, but I get '2.09228E+14' instead of the number.  Any suggestions?</p>