code: def run(cmd_str,cwd='.',verbose=False):
      
      warnings.warn("run() has moved to pyemu.os_utils",PyemuWarning)
      pyemu.os_utils.run(cmd_str=cmd_str,cwd=cwd,verbose=verbose)
docs: an OS agnostic function to execute command
  
      Parameters
      ----------
      cmd_str : str
          the str to execute with os.system()
  
      cwd : str
          the directory to execute the command in
  
      verbose : bool
          flag to echo to stdout complete cmd str
  
      Note
      ----
      uses platform to detect OS and adds .exe or ./ as appropriate
  
      for Windows, if os.system returns non-zero, raises exception
  
      Example
      -------
      ``>>>import pyemu``
  
      ``>>>pyemu.helpers.run("pestpp pest.pst")``