diff options
Diffstat (limited to 'lib/stwcs/distortion/utils.py')
| -rw-r--r-- | lib/stwcs/distortion/utils.py | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/lib/stwcs/distortion/utils.py b/lib/stwcs/distortion/utils.py index 449bc18..51df391 100644 --- a/lib/stwcs/distortion/utils.py +++ b/lib/stwcs/distortion/utils.py @@ -33,7 +33,7 @@ def output_wcs(list_of_wcsobj, ref_wcs=None, owcs=None, undistort=True): crval = np.array([crval1,crval2], dtype=np.float64) # this value is now zero-based if owcs is None: - if ref_wcs == None: + if ref_wcs is None: ref_wcs = list_of_wcsobj[0].deepcopy() if undistort: outwcs = undistortWCS(ref_wcs) @@ -98,7 +98,7 @@ def undistortWCS(wcsobj): cx, cy = coeff_converter.sip2idc(wcsobj) # cx, cy can be None because either there is no model available # or updatewcs was not run. - if cx == None or cy == None: + if cx is None or cy is None: if foundIDCTAB(wcsobj.idctab): m = """IDCTAB is present but distortion model is missing. Run updatewcs() to update the headers or @@ -157,7 +157,7 @@ def apply_idc(pixpos, cx, cy, pixref, pscale= None, order=None): pixref: reference opixel position """ - if cx == None: + if cx is None: return pixpos if order is None: |