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from __future__ import print_function, division

from sympy.printing.mathml import mathml
from sympy.utilities.mathml import c2p
import tempfile
import subprocess


def print_gtk(x, start_viewer=True):
    """Print to Gtkmathview, a gtk widget capable of rendering MathML.

    Needs libgtkmathview-bin"""
    with tempfile.NamedTemporaryFile('w') as file:
        file.write(c2p(mathml(x), simple=True))
        file.flush()

        if start_viewer:
            subprocess.check_call(('mathmlviewer', file.name))