python: ascii read

Robert Kern rkern at
Thu Sep 16 15:10:21 CEST 2004

Sebastian Krause wrote:
> The input data is is large ascii file of astrophysical parameters 
> (integer and float) of gaydynamics calculations. They should be read in 
> as an array of integer and float numbers not as string (as open() and 
> read() does). Then the array is used to make different plots from the 
> data and do some (simple) operations: subtraction and divison of 
> columns. I am using Scipy with Python 2.3.x under Linux (SuSE 9.1).

Well, one option is to use the "lines" argument to 
to only read in chunks at a time. It probably won't help speed any, but 
hopefully it will be correct.

> Sebastian

Robert Kern
rkern at

"In the fields of hell where the grass grows high
  Are the graves of dreams allowed to die."
   -- Richard Harter

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