On Wed, Aug 11, 2010 at 11:43 AM, Pramod <pram...@gmail.com> wrote:
> Hi
>
> I want to know the how we input values into the matrix (N*N size)
> from keyboard in python,
>
> Here I wrote Matrix programe in C++
>
> This asks values from key board and print on the console N*N matrix ;
>
> Thanks in advance ....
>
>
> #include<iostream>
> using namespace std;
> int main()
> {
> double **a;
> int i,j,n;
> cout<<"Enter size of the matrix\n";
> cin>>n;
> for(i=0;i<n;i++){
> for(j=0;j<n;j++)
> a[i][j] = random();
> //or
> //cin>>a[i][j];
> cout<<endl;
> }
> for(i=0;i<n;i++){
> for(j=0;j<n;j++)
> cout<<a[i][j]<<"\t";
> cout<<endl;
> }
> delete [] a;
> }
from random import random
from sys import exit
while True:
try:
N = int(raw_input("Enter size of the matrix: "))
except ValueError:
print "Invalid input. Try again."
except EOFError:
exit(1)
else:
break
a = [[random() for j in xrange(N)] for i in xrange(N)]
stringified = "\n".join("\t".join(row) for row in a)
print stringified
If you're doing serious work with matrices, look at the NumPy package.
Cheers,
Chris
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