pyqtgraph/pyqtgraph/exporters/__init__.py

from .Exporter import Exporter
from .ImageExporter import *
from .SVGExporter import *
from .Matplotlib import *
from .CSVExporter import *
from .PrintExporter import *
from .HDF5Exporter import *

def listExporters():
    return Exporter.Exporters[:]