choose python virtual env
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vs code can select python interpreter. But do not know if spacevim can do it or not.
The original issues comes from that pudb was installed in an anaconda virtual env. but vim can not load the packages even launched after activating inside venv. 
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Error detected while processing /home/lsx/.cache/vimfiles/repos/github.com/mvanderkamp/vim-pudb-and-jam/plugin/pudb.vim:
line   39:
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/home/lsx/.cache/vimfiles/repos/github.com/mvanderkamp/vim-pudb-and-jam/pythonx/pudb_and_jam.py", line 7, in <module>
    from pudb.settings import load_breakpoints, save_breakpoints
ModuleNotFoundError: No module named 'pudb'