"""
Stuff that doesn't fit anywhere else.
"""

from sage.all import *
from functools import reduce


def legend_latex(obj):
    """
    Return the LaTeX representation of ``obj``, but wrap it in dollar
    ($) signs so that we can pass it directly to plot() et al. as a
    legend label.
    """
    return '$%s$' % latex(obj)


def product(factors):
    """
    Returns the product of the elements in the list ``factors``. If
    the list is empty, we return 1.

    EXAMPLES:

    Normal integer multiplication::

        sage: product([1,2,3])
        6

    And with symbolic variables::

        sage: x,y,z = SR.var('x,y,z')
        sage: product([x,y,z])
        x*y*z

    TESTS:

    The empty product is the multiplicative identity (one)::

        sage: product([])
        1

    """
    return reduce(operator.mul, factors, 1)