ENH: Better error message for savetxt when X.ndim > 2 or X.ndim = 0 #9726
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np.savetxt does not support saving arrays of dimension 0 or higher than 2.
This pull request improves the message of the error raised.
Before this patch, the error message was something like:
TypeError: Mismatch between array dtype ('float64') and format specifier ('%.18e %.18e')