Flopy error while exporting shapefile

[jjkennedy]

I'm using Python 3.7.9 installed with Anaconda and running script within a Jupyter notebook to post process groundwater model data. The groundwater model is ran using Modflow 6, with ModPath 7 also being used.
The following versions of packages are also being used:
flopy 3.3.1
numpy version: 1.19.1
matplotlib version: 3.3.1
rasterio version: 1.1.0

Using "flopy.export.utils.export_array_contours()" I continually get an error stating the following:
TypeError: init() got multiple values for argument 'shapeType'

I also get the same error when attempting to create a shapefile from Modpath 7 pathlines using "p.write_shapefile()"

The troubling aspect is that I'm using script from a co-worker which works for him on his computer. I've also sent the script to another co-worker (who is a contributor to the FloPy developement team) and the script works for him as well on his computer.

Since no one else I know can seem to replicate the error message, I have not attached all the necessary files and code and I'm wondering if anyone here has any experience as to why only my computer would throw this error? Any help/suggestions would be greatly appreciated as I dont know where else to go to try and solve the problem.

Full error message below:

---

TypeError Traceback (most recent call last)
in
1 flopy.export.utils.export_array_contours(grid, 'heads1_lowlands.shp', hds[0], fieldname='level',
2 levels = list(range(3900, 4200, 10)),
----> 3 prj = "..\GIS_layers\Harney_Basin_lowlands.prj")
4
5

C:\ProgramData\Anaconda3\lib\site-packages\flopy\export\utils.py in export_array_contours(modelgrid, filename, a, fieldname, interval, levels, maxlevels, epsg, prj, **kwargs)
1613 ax = plt.subplots()[-1]
1614 ctr = contour_array(modelgrid, ax, a, levels=levels)
-> 1615 export_contours(modelgrid, filename, ctr, fieldname, epsg, prj, **kwargs)
1616 plt.close()
1617

C:\ProgramData\Anaconda3\lib\site-packages\flopy\export\utils.py in export_contours(modelgrid, filename, contours, fieldname, epsg, prj, **kwargs)
1465 dtype=[(fieldname, float)]).view(np.recarray)
1466
-> 1467 recarray2shp(ra, geoms, filename, epsg=epsg, prj=prj, **kwargs)
1468 return
1469

C:\ProgramData\Anaconda3\lib\site-packages\flopy\export\shapefile_utils.py in recarray2shp(recarray, geoms, shpname, mg, epsg, prj, **kwargs)
499 # set up for pyshp 2
500 shapefile = import_shapefile()
--> 501 w = shapefile.Writer(shpname, shapeType=geomtype)
502 w.autoBalance = 1
503

TypeError: init() got multiple values for argument 'shapeType'

[christianlangevin]

Do you have a version of the python PyShp package that is 2.0 or greater? If not, then I'm guessing that's the problem. If you upgrade to the latest version of PyShp, I'm optimistic that would fix it.

[jjkennedy]

Thank you so much for this suggestion @langevin-usgs !!! That was the problem.