Python error "TypeError: argument of type 'NoneType' is not iterable"

[cebonet]

I'm getting the following error after installing vim-fsharp using pathogon.

Error detected while processing /home/cebrail/.vim/bundle/vim-fsharp/ftplugin/fsharp.vim: line 64: Traceback (most recent call last): File "", line 24, in File "", line 22, in get_path TypeError: argument of type 'NoneType' is not iterable

[lulu-berlin]

What operating system are you using?

[kjnilsson]

I've seen this error occasionally when the fsharpautocomplete process has crashed. can you run fsharpautocomple.exe on it's own?

[alvoha]

I'm running into this as well with the following error message: Error detected while processing /home/alvoha/.vim/bundle/vim-fsharp/ftplugin/fsharp.vim: line 64: Exception in thread Thread-1: Traceback (most recent call last): File "/usr/lib/python2.7/threading.py", line 810, in __bootstrap_inner self.run() File "/usr/lib/python2.7/threading.py", line 763, in run self.__target(*self.__args, **self.__kwargs) File "/home/alvoha/.vim/bundle/vim-fsharp/ftplugin/fsharpvim.py", line 107, in work parsed = json.loads(data) File "/usr/lib/python2.7/json/__init__.py", line 338, in loads return _default_decoder.decode(s) File "/usr/lib/python2.7/json/decoder.py", line 366, in decode obj, end = self.raw_decode(s, idx=_w(s, 0).end()) File "/usr/lib/python2.7/json/decoder.py", line 384, in raw_decode raise ValueError("No JSON object could be decoded") ValueError: No JSON object could be decoded Traceback (most recent call last): File "<string>", line 24, in <module> File "<string>", line 22, in get_path TypeError: argument of type 'NoneType' is not iterable I'm on Ubuntu 14.04 LTS and installing with pathogen

[lulu-berlin]

When does this error occur? Is it the result of a specific action or nothing works at all?

I'm using Ubuntu 14.04 too with pathogen and I don't seem to encounter it.

[cebonet]

After a fresh install I get the same error as alvoha mentions. After running install.sh the errors reduces to:

Error detected while processing /home/cebrail/.vim/bundle/vim-fsharp/ftplugin/fsharp.vim: line 64: Traceback (most recent call last): File "", line 24, in File "", line 22, in get_path TypeError: argument of type 'NoneType' is not iterable

The error shows up when opening a .fs file. I'm using 64-bit Arch and I'm able to run the fsharpautocomplete file using mono.

[puffybsd]

I've encountered the same issue (line 64..."TypeError: argument of 'NoneType' is not iterable"), and was able to "resolve" it this morning.

The problem appears to be a "heisenbug": while adding debug statements to determine why the plugin is attempting to iterate a 'None' value, the issue disappeared. Turns out there's a variable that gets initialized to an empty map, but reinitialized by G.fsac.get_paths(), which is sometimes returning None. Adding a call to G.fsac.get_paths() when G.fsac is initialized fixes it.

By the way, I'm running arch as well, but on two systems both running arch linux, one had the issue and another did not. vim, mono, fsharp, python, all the same. Same package manager (vim-plug) with the same version. Diffed .vim, env and .vimrc. Only difference appears to be kernel and architecture (4.4.0/intel vs. 4.2.5/amd).

I've sent a pull request https://github.com/fsharp/vim-fsharp/pull/36

[puffybsd]

Incidentally, the machine exhibiting the behavior was able to run the plugin before upgrading to ssd and switching from fedora to arch, so unlikely related to intel vs amd.

Checks are failing on the pull request due to: "Specify a project or solution file. The directory does not contain a project or solution file." Not sure what needs to be done here if anything.

[ghost]

On Archlinux, It still occurs but installing gvim-python3 instead of gvim solves the problem.

[xqguo]

This is due to get_paths function. i fixed it and created a pull request.