Question

Are there any ways to debug python scripts not leaving vim in *nix systems (executing the script, setting up breakpoints, showing variables in watch-list, etc)?

Answer 1

Use pdb:

import pdb
def main():
  list = [1,2,3]
  pdb.set_trace()
  list = [2,3,4]

if __name__ == '__main__':
    main()

Now run using :!python % and you’ll hit your breakpoint and be able to debug interactively like in gdb.