MNGuenther/allesfitter

Import fails in Python 3.9

mwcraig opened this issue · 2 comments

mwcraig commented

I installed allesfitter in a new python 3.9 environment and got the traceback below when I tried to import it. Installing in a python 3.8 environment instead fixed the issue.

In [1]: import allesfitter
Traceback (most recent call last):

  File "/Users/mattcraig/miniconda3/envs/alles/lib/python3.9/site-packages/IPython/core/interactiveshell.py", line 3441, in run_code
    exec(code_obj, self.user_global_ns, self.user_ns)

  File "<ipython-input-1-006995d2ab9b>", line 1, in <module>
    import allesfitter

  File "/Users/mattcraig/miniconda3/envs/alles/lib/python3.9/site-packages/allesfitter/__init__.py", line 45, in <module>
    from .mcmc import mcmc_fit

  File "/Users/mattcraig/miniconda3/envs/alles/lib/python3.9/site-packages/allesfitter/mcmc.py", line 37, in <module>
    from .computer import update_params, calculate_lnlike_total

  File "/Users/mattcraig/miniconda3/envs/alles/lib/python3.9/site-packages/allesfitter/computer.py", line 47, in <module>
    from .lightcurves import translate_limb_darkening_from_q_to_u as q_to_u

  File "/Users/mattcraig/miniconda3/envs/alles/lib/python3.9/site-packages/allesfitter/lightcurves.py", line 39, in <module>
    from .plotting import tessplot

  File "/Users/mattcraig/miniconda3/envs/alles/lib/python3.9/site-packages/allesfitter/plotting.py", line 36, in <module>
    from allesfitter.io import read_csv

  File "/Users/mattcraig/miniconda3/envs/alles/lib/python3.9/site-packages/allesfitter/io.py", line 62
    X = np.column_stack((*arrays))
                         ^
SyntaxError: can't use starred expression here
ganesh1076 commented

Yes, I am facing the same issue.

MNGuenther commented

Thanks for raising this, @mwcraig and @ganesh1076! This was caused by a syntax change in the new Python 3.9 (versus Python 3.8). I have updated the respective line of code and pushed allesfitter v1.2.6 to PyPI. If you now pip install the new version, it should run on all Python>=2.7 and >=3.5 again.

  • 👍2