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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def inspect(self, tab_width=2, ident_char='-'):
 """ Inspects a project file structure based based on the instance folder property. :param tab_width: width size for subfolders and files. :param ident_char: char to be used to show identation level Returns A string containing the project structure. """

    startpath = self.path
    output = []
    for (root, dirs, files) in os.walk(startpath):
      level = root.replace(startpath, '').count(os.sep)
      indent = ident_char * tab_width * (level)
      if level == 0:
        output.append('{}{}/'.format(indent, os.path.basename(root)))
      else:
        output.append('|{}{}/'.format(indent, os.path.basename(root)))
      subindent = ident_char * tab_width * (level + 1)
      [output.append('|{}{}'.format(subindent, f)) for f in files]
    return '\n'.join(output)