There are several recent question on Stackoverflow about

SystemError: new style getargs format but argument is not a tuple

PIL/pillow, 2.7, Nov 28, 2016
https://stackoverflow.com/questions/40844212/systemerror-new-style-getargs-format-but-argument-is-not-a-tuple-even-the-argum

ImageDraw.draw.line(), python, Sep 14, 2016
https://stackoverflow.com/questions/39497458/imagedraw-draw-line-systemerror-new-style-getargs-format-but-argument-is-no?rq=1

opencv, cv2.line, python, Sep 19, 2016
https://stackoverflow.com/questions/32673359/systemerror-new-style-getargs-format-but-argument-is-not-a-tuple?rq=1

opencv, cv2.imread/show, python, Nov 5, 2016
https://stackoverflow.com/questions/13225525/system-error-new-style-getargs-format-but-argument-is-not-a-tuple-when-using?rq=1
(code mostly from doc)

??.imread?, python, Jan 1, 2017
https://stackoverflow.com/questions/41419688/systemerror-new-style-getargs-format-but-argument-is-not-a-tuple-it-is-a-tup

(and maybe others)
[Would that people would identify OS and exact version of both python and imported module ;-)]

No one commenting has a clue. Is message from Victor's new calling code? Was it backported to 2.7? Could error be a result of running old 3rd party binary that needs to be recompiled?


--
Terry Jan Reedy

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