如何使用类中的方法正确地遍历代码的一部分？

class CodeTraversal:
    def __init__(self, code):
        self.code = code

class CodeTraversal:
    def __init__(self, code):
        self.code = code
    
    def traverse_code(self):
        # 遍历代码的一部分
        result = []
        for line in self.code:
            # 处理每一行代码
            result.append(line)
        return result

code_snippet = ["line 1", "line 2", "line 3"]
traversal = CodeTraversal(code_snippet)

traversal_result = traversal.traverse_code()

for line in traversal_result:
    print(line)