arrays in python

[Schüle Daniel]

> I want to write a program in python using integer arrays.

you can :)


> I wish to calculate formulas using 200 digit integers.

no problem

> I could not find any documentation in python manual about declaring arrays.
>  
> I searched the internet

read here
http://diveintopython.org/native_data_types/lists.html

maybe list are what you are looking for

> and found an example that said I must declare
>  
> from Numeric import *

yes, one can use Numeric for this taks too

> and I downloaded a numerical python  extension,
>  
> but still  have not found a way to declare an array of given length.
>  
> The zeros function always gives me an error message.

 >>> import Numeric as N, random as rand
 >>> nums = [33 ** rand.randint(10,100) for i in range(200)]
 >>> len(nums)
200
 >>> nums[0]
1666465812864030391541732975677083441749008906546726522024522041932256405404932170047036994592860856233379702595619607481259213235163454890913L
 >>>
 >>> a = N.array(nums)
 >>> len(a)
200
 >>> a[0]
1666465812864030391541732975677083441749008906546726522024522041932256405404932170047036994592860856233379702595619607481259213235163454890913L
 >>>


by the way, you know you can use interactive Python iterpreter
and there is dir and help function

 >>> dir(a)
['__copy__', '__deepcopy__', 'astype', 'byteswapped', 'copy', 
'iscontiguous', 'itemsize', 'resize', 'savespace', 'spacesaver', 
'tolist', 'toscalar', 'tostring', 'typecode']
 >>> dir(nums)
['__add__', '__class__', '__contains__', '__delattr__', '__delitem__', 
'__delslice__', '__doc__', '__eq__', '__ge__', '__getattribute__', 
'__getitem__', '__getslice__', '__gt__', '__hash__', '__iadd__', 
'__imul__', '__init__', '__iter__', '__le__', '__len__', '__lt__', 
'__mul__', '__ne__', '__new__', '__reduce__', '__reduce_ex__', 
'__repr__', '__reversed__', '__rmul__', '__setattr__', '__setitem__', 
'__setslice__', '__str__', 'append', 'count', 'extend', 'index', 
'insert', 'pop', 'remove', 'reverse', 'sort']
 >>>

Regards, Daniel