human
Complete this python program:
def get_depth_fn(depth_multiplier, min_depth):
assistant
#Here is the Python code you requested.

    """Builds a callable to compute depth (output channels) of conv filters.
    Args:
    depth_multiplier: a multiplier for the nominal depth.
    min_depth: a lower bound on the depth of filters.
    Returns:
    A callable that takes in a nominal depth and returns the depth to use.
    """
    def multiply_depth(depth):
        new_depth = int((depth * depth_multiplier))
        return max(new_depth, min_depth)
    return multiply_depth