62 lines
2.6 KiB
Python
62 lines
2.6 KiB
Python
# 读取原始数据文件
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import datetime
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input_file = r"C:\Users\xj-robot\Desktop\weight.txt" # 原始数据文件路径
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output_file = r"C:\Users\xj-robot\Desktop\filtered_B_records.txt" # 输出结果文件路径 (使用原始字符串避免Unicode转义错误)
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# 存储包含"B"标记的记录
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filtered_records = []
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# 读取并过滤数据
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with open(input_file, "r", encoding="utf-8") as f:
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lines = f.readlines()
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for line in lines:
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# 筛选包含"B,"的行（避免误匹配其他含B的字符）
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if "B," in line or "F," in line:
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# 移除等号
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cleaned_line = line.strip().replace('=', '')
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# 分割行数据
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parts = cleaned_line.split(',')
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if len(parts) >= 2:
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try:
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# 解析前两个日期（假设格式为YYYY-MM-DD或YYYY/MM/DD）
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date1_str = parts[0].strip()
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date2_str = parts[1].strip()
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# 尝试不同的日期格式
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date_formats = ['%Y-%m-%d %H:%M:%S', '%Y-%m-%d', '%Y/%m/%d']
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date1 = None
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date2 = None
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for fmt in date_formats:
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try:
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if date1 is None:
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date1 = datetime.datetime.strptime(date1_str, fmt)
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if date2 is None:
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date2 = datetime.datetime.strptime(date2_str, fmt)
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except ValueError:
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continue
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if date1 and date2:
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# 计算时间差（秒数）
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total_seconds = (date2 - date1).total_seconds()
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# 转换为分:秒格式
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minutes = int(total_seconds // 60)
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seconds = int(total_seconds % 60)
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time_diff = f"{minutes:02d}:{seconds:02d}"
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# 在行末尾添加时间差
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cleaned_line = f"{cleaned_line},{time_diff}"
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except Exception as e:
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# 如果日期解析失败，保持原始行不变
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pass
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filtered_records.append(cleaned_line)
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# 保存过滤后的数据
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with open(output_file, "w", encoding="utf-8") as f:
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f.write("\n".join(filtered_records))
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print(f"过滤完成！共提取到 {len(filtered_records)} 条含'B'标记的记录")
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print(f"结果已保存至：{output_file}") |