output a list of random numbers 'x' columns wide

[adityavpratap]

If you need to do any actual work with data then printing is not that useful.

More common would be to built data structure and print it out if needed:

>>> import random
>>> table = [[random.random() for j in range(10)] for i in range(50)]    # will create 2D matrix 50 rows with 10 elements
>>> for row in table: 
...     print(*row, sep=' ')                                             # will print row by row, row values separated by space

If work is getting more serious then numpy has built-in method:

>>> import numpy as np
>>> np.random.rand(50,10)

Thanks for helping. Seems to be a nice way to create a 2D table. Where can I read more about it?
Regards,