fix col transf #392

Job	Run time
Lint	0s
Retrieve the latest commit message	0s
Retrieve the selected tests	0s
Linux x86-64 pylatest_pip_scipy_dev	0s
matrix.name	-1s
Linux i386 debian_32bit	-1s
Linux x86-64 pylatest_free_threaded	-1s
	-3s

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