Question

I have a very simple question. I have an array of floats

   a = array([0.01,0.1,10,100,1000])

I would like to print this array so that the end result looks something like

   10$^-2$, 10$^-1$, ....

Is that possible with the % command?

Answer 1

as a one-liner:

["10$^{}$".format(int(math.log10(num))) for num in a]

or more clearly:

from math import *

def toLatex(powerOf10):
    exponent = int( log10(powerOf10) )
    return "10$^{}$".format(exponent)

nums = [10**-20, 0.01, 0.1, 1, 10, 100, 1000, 10**20]
[(x, toLatex(x)) for x in nums]

 

[(1e-20, '10$^-20$'),
 (0.01, '10$^-2$'),
 (0.1, '10$^-1$'),
 (1, '10$^0$'),
 (10, '10$^1$'),
 (100, '10$^2$'),
 (1000, '10$^3$'),
 (100000000000000000000L, '10$^20$')]