printing arrays in shell, and .py association with idle

[Robert Kern]

Paris Miles-Brenden wrote:
> I have been using python for the last 3 years and feel it to be an 
> excellent programming language.  However, I have run into a few snags or 
> annoyances.  I am currently creating a computational physics simulation 
> which requires large arrays and am using numeric, although this is not a 
> list for numeric, I think that my question falls under python in general.
>  
>  
> 1.  My first problem is with printing these large arrays for debugging 
> purposes.  Is there any way to prevent the python shell from word 
> wrapping single array print statements?  I'm simply using:
>  
> print hamiltonian
>  
> where hamiltonian is an array of complex numbers.  Changing window size 
> (default or otherwise) does not change this, and I have found the option 
> no-where.

Well this at least is a Numeric-specific question, not a general Python one.

Anyways, the string representation can be controlled by supplying the 
appropriate callback. From Numeric.py (pardon any unfortunate linewraps):

#Use Konrad's printing function (modified for both str and repr now)
from ArrayPrinter import array2string
def array_repr(a, max_line_width = None, precision = None, 
suppress_small = None):
     return array2string(a, max_line_width, precision, suppress_small,
', ', 1)

def array_str(a, max_line_width = None, precision = None, suppress_small 
= None):
     return array2string(a, max_line_width, precision, suppress_small,
' ', 0)

multiarray.set_string_function(array_str, 0)
multiarray.set_string_function(array_repr, 1)

-- 
Robert Kern
rkern at ucsd.edu

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