2015-10-28 04:38:21 -0500 received badge ● Good Question (source) 2015-10-08 08:52:44 -0500 received badge ● Famous Question (source) 2014-05-29 23:18:49 -0500 received badge ● Notable Question (source) 2013-08-29 05:13:41 -0500 received badge ● Famous Question (source) 2013-08-06 00:17:56 -0500 received badge ● Popular Question (source) 2013-05-05 21:24:49 -0500 received badge ● Notable Question (source) 2013-02-27 04:37:00 -0500 received badge ● Popular Question (source) 2012-10-06 14:50:16 -0500 asked a question Is it possible to convert Mathematica notebook to Sage? I have been using Mathematica, now would like to switch to Sage. Is there a way that I can convert my existing Mathematica notebooks to Sage? 2012-10-06 03:55:30 -0500 received badge ● Scholar (source) 2012-10-06 03:55:30 -0500 marked best answer How to plot data from a file? Suppose that you have a file '/tmp/DataFile' containing the following text 3;2 2;1 1;0.1 0.01;-0.9  Then you can load the two data columns into two arrays xArr and yArr by the following code f = open('/home/tobi/tmp/DataFile', 'r') xArr=[] yArr=[] line=f.readline() while(line !=''): xy=line.split(';') xArr.append(float(xy[0])) yArr.append(float(xy[1])) line=f.readline()  Now you can do whatever you want with these array, for example plot them list_plot(zip(xArr,yArr))  If you like to understand better what open and readline does look at Python doc input output, the split command is explained in the Python doc on strings 2012-10-05 04:20:43 -0500 received badge ● Nice Question (source) 2012-10-05 01:06:56 -0500 received badge ● Student (source) 2012-10-04 23:28:03 -0500 asked a question How to plot data from a file? Is it possible to plot data imported from an ASCII file. 2012-10-04 23:14:01 -0500 received badge ● Supporter (source)