BACKFLAG parameter is 'backflag' in docstring but 'backflg' in object init.
Change 'levfil' to 'levfill' in the write_file call
File "C:\Anaconda\lib\site-packages\flopy\modflow\mfnwt.py", line 267, in write_file
f.write('{0:10d}'.format(self.levfil))
AttributeError: 'ModflowNwt' object has no attribute 'levfil'
BACKFLAG parameter is 'backflag' in docstring but 'backflg' in object init.
Change 'levfil' to 'levfill' in the write_file call
File "C:\Anaconda\lib\site-packages\flopy\modflow\mfnwt.py", line 267, in write_file f.write('{0:10d}'.format(self.levfil)) AttributeError: 'ModflowNwt' object has no attribute 'levfil'