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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 extract_code(lines, node, lstrip="", ljoin="\n", strip=""):
 """Get corresponding text in the code Arguments: lines -- code splitted by linebreak node -- PyPosAST enhanced node Keyword Arguments: lstrip -- During extraction, strip lines with this arg (default="") ljoin -- During extraction, join lines with this arg (default="\n") strip -- After extraction, strip all code with this arg (default="") """

    first_line, first_col = node.first_line - 1, node.first_col
    last_line, last_col = node.last_line - 1, node.last_col
    if first_line == last_line:
        return lines[first_line][first_col:last_col].strip(strip)

    result = []
    # Add first line
    result.append(lines[first_line][first_col:].strip(lstrip))
    # Add middle lines
    if first_line + 1 != last_line:
        for line in range(first_line + 1, last_line):
            result.append(lines[line].strip(lstrip))
    # Add last line
    result.append(lines[last_line][:last_col].strip(lstrip))
    return ljoin.join(result).strip(strip)