New issue 1338: _localize_check trying to join strings with None https://bitbucket.org/yt_analysis/yt/issues/1338/_localize_check-trying-to-j...
In yt version 3.3.5 (installed by pip) run in python 2.7.13, when loading a BoxLib format folder I get the following message:
Traceback (most recent call last): File "get_plot.py", line 20, in <module> ds=yt.load(file_name) File "xxx/python2.7/site-packages/yt/convenience.py", line 86, in load return candidates0 File "xxx/python2.7/site-packages/yt/frontends/boxlib/data_structures.py", line 392, in init self.cparam_filename = self._localize_check(cparam_filename) File "xxx/python2.7/site-packages/yt/frontends/boxlib/data_structures.py", line 415, in _localize_check if os.path.exists(full_fn): File "xxx/python2.7/genericpath.py", line 26, in exists os.stat(path) TypeError: coercing to Unicode: need string or buffer, NoneType found
The problem is occurring in the BoxLibDataset class of data_structures.py In the init of this class, the parameters, cparam_filename, and fparam_filename are set to None. The function _localize_check will then try to see if if the files exist or not, however, it tries to join the root_dir with the variable cparam_filename which is set to none in the init function. The code crashes because join cannot handle anything but strings and buffers, and it is getting None.
The version of yt in Anaconda (version 3.3.2) has the init function of the BoxLibDataset class define cparam_filename and fparam_filename as string file names ('inputs' and something else I can't remember) that coincide with the BoxLib standards.