# Source code for pygrass.modules.interface.env

    # -*- coding: utf-8 -*-
    """
    Created on Thu May 28 17:41:32 2015

    @author: pietro
    """
    from __future__ import print_function
    import os
    import sys

    def get_env():
        """Parse the GISRC file and return the GRASS variales"""
        gisrc = os.environ.get('GISRC')
        if gisrc is None:
            raise RuntimeError('You are not in a GRASS session, GISRC not found.')
        with open(gisrc, mode='r') as grc:
            env = dict([(k.strip(), v.strip())
                        for k, v in [row.split(':',1) for row in grc if row]])
        return env

    def get_debug_level():
        """Return the debug level"""
        debug = get_env().get('DEBUG')
        return int(debug) if debug else 0

    def G_debug(level, *msg):
        """Print or write a debug message, this is a pure python implementation
        of the G_debug function in the C API."""
        debug_level = get_debug_level()
        if debug_level >= level:
            dfile = os.environ.get("GRASS_DEBUG_FILE")
            fd = sys.stderr if dfile is None else open(dfile, mode='a')
            print("D%d/%d: " % (level, debug_level), *msg, end='\n', file=fd)

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