code: def groot(path=''):
      "Changes current directory to the root of the project (looks for README.md)."
  
      def check_filelist(l):
          if ('README.md' in l) or ('README' in l):
              return True
          else:
              return False
  
      import os, copy
      cwd = os.getcwd()  # initial dir
      cwd0 = copy.copy(cwd)
      cwd_init = copy.copy(cwd)
  
      found = False
      sysroot = False
  
      while not found and not sysroot:
          found = check_filelist(os.listdir())
          if not found:
              os.chdir(os.path.join(cwd, os.pardir))
              cwd = os.getcwd()
              if cwd == cwd0:
                  sysroot = True
              else:
                  cwd0 = cwd
          else:
              os.chdir(os.path.join(cwd0, path))
  
      if sysroot:
          os.chdir(cwd_init)
          raise Exception("Root directory not found."f groot(path=''):
      "Changes current directory to the root of the project (looks for README.md)."
  
      def check_filelist(l):
          if ('README.md' in l) or ('README' in l):
              return True
          else:
              return False
  
      import os, copy
      cwd = os.getcwd()  # initial dir
      cwd0 = copy.copy(cwd)
      cwd_init = copy.copy(cwd)
  
      found = False
      sysroot = False
  
      while not found and not sysroot:
          found = check_filelist(os.listdir())
          if not found:
              os.chdir(os.path.join(cwd, os.pardir))
              cwd = os.getcwd()
              if cwd == cwd0:
                  sysroot = True
              else:
                  cwd0 = cwd
          else:
              os.chdir(os.path.join(cwd0, path))
  
      if sysroot:
          os.chdir(cwd_init)
          raise Exception("Root directory not found.")
docs: Changes current directory to the root of the project (looks for README.md).