4.4 pygsl.const.num
Scientific number constants

from pygsl.const import *
# an alternative to
# from pygsl.const.num import *
print "fine structure is 1/137 with an error of %g%%"%(abs(1.0/137.0/fine_structure-1.0)*100.0)

Only two constants are available:

Name gsl Name unit
fine_structure GSL_CONST_NUM_FINE_STRUCTURE 1
avogadro GSL_CONST_NUM_AVOGADRO 1 / mol