python逻辑/代码通过比较字符串跳过几行

Answer 1

对于net_name 和pin_name，您不需要在每次迭代中都添加if 语句。文件对象是一个迭代器，所以你可以在它们上调用next。

我假设您只想跳过第一部分，所以我使用了一个标志来跳过两个 "Layer/Via" 之间的行：

def read_pin_file(filename):
    with open(filename, "r", encoding="utf-8") as f:
        # get infromation from fist two lines
        net_name = next(f).strip().rsplit(maxsplit=1)[1]
        pin_name = next(f).strip().rsplit(maxsplit=1)[1]

        # This loop is for skipping that secction
        flag_count = 0
        for line in f:
            if line.strip().startswith("Layer/Via"):
                flag_count += 1
            if flag_count == 2:
                # We're on section two.
                break

        for line in f:
            line = line.strip()
            if line.startswith("M9"):
                return {
                    "Pin_Name": pin_name,
                    "Net_Name": net_name,
                    "M9": line.rsplit(maxsplit=1)[1],
                }

print(read_pin_file("inst_1.txt"))

输出：

{'Pin_Name': 'VDD', 'Net_Name': 'VDD', 'M9': '7.4605e-03'}