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| References | (1 earlier) <CALwzidk=KX42EwZBe8jCJ9YQT_FNHG8GGU_ogNhtv7myBptSjQ@mail.gmail.com> <CADjSo4RpDwohyNFvudqTCX8vdOFd-sHMUZE0adkg6P=sU8jNwQ@mail.gmail.com> <CALwzidk2i40vAecq14f=_AeQM22CjQK-L_uf+44g7JHJYjxuPg@mail.gmail.com> <CADjSo4S1h_ucy2io6LqZr158FSJJMF5tFMOaTecB4-AjVTBfSg@mail.gmail.com> <CALwzid=ew=kzmoEFbWKLLKZADL7sqSMfXd-7SL5Nw+Sw0UFJYg@mail.gmail.com> |
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| Date | 2012-02-17 11:00 +0100 |
| Subject | Re: format a measurement result and its error in "scientific" way |
| From | Daniel Fetchinson <fetchinson@googlemail.com> |
| Newsgroups | comp.lang.python |
| Message-ID | <mailman.5913.1329472829.27778.python-list@python.org> (permalink) |
>> Thanks, it's simpler indeed, but gives me an error for value=1.267, >> error=0.08: >> >> Traceback (most recent call last): >> File "/home/fetchinson/bin/format_error", line 26, in <module> >> print format_error( sys.argv[1], sys.argv[2] ) >> File "/home/fetchinson/bin/format_error", line 9, in format_error >> error_scale += error.scaleb( -error_scale ).to_integral( ).adjusted( >> ) >> File "/usr/lib64/python2.6/decimal.py", line 3398, in scaleb >> ans = self._check_nans(other, context) >> File "/usr/lib64/python2.6/decimal.py", line 699, in _check_nans >> other_is_nan = other._isnan() >> AttributeError: 'int' object has no attribute '_isnan' >> >> Which version of python are you using? > > 2.7.1. At a guess, it's failing because scaleb() (which was new in > 2.6) is buggily expecting a decimal argument, but adjusted() returns an int. > Convert the results of the two adjusted() calls to decimals, and I > think it should be fine. Great, with python 2.7 it works indeed! Cheers, Daniel -- Psss, psss, put it down! - http://www.cafepress.com/putitdown
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Re: format a measurement result and its error in "scientific" way Daniel Fetchinson <fetchinson@googlemail.com> - 2012-02-17 11:00 +0100
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