compression.py

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__all__ = ["imageCompressionDisabled"]

from contextlib import contextmanager
from .fits import getAllowImageCompression, setAllowImageCompression


@contextmanager
def imageCompressionDisabled():
    """Create a context where FITS image compression is disabled.

    The previous compression setting is restored on exit.
    """
    old = getAllowImageCompression()
    try:
        setAllowImageCompression(False)
        yield
    finally:
        setAllowImageCompression(old)