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77 lines
2.1 KiB
77 lines
2.1 KiB
2 months ago
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"""
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日期工具模块
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"""
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from datetime import date, datetime, timedelta
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from typing import List, Optional
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def parse_date(date_str: str) -> date:
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"""解析日期字符串 (YYYYMMDD 或 YYYY-MM-DD)"""
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if len(date_str) == 8:
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return datetime.strptime(date_str, "%Y%m%d").date()
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elif len(date_str) == 10:
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return datetime.strptime(date_str, "%Y-%m-%d").date()
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else:
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raise ValueError(f"无效的日期格式: {date_str}")
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def format_date(d: date, format_str: str = "%Y-%m-%d") -> str:
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"""格式化日期"""
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return d.strftime(format_str)
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def format_datetime(dt: datetime, format_str: str = "%Y-%m-%d %H:%M:%S") -> str:
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"""格式化日期时间"""
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return dt.strftime(format_str)
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def get_market_from_code(code: str) -> str:
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"""从代码获取市场"""
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if code.endswith(".SH"):
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return "SH"
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elif code.endswith(".SZ"):
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return "SZ"
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elif code.endswith(".BJ"):
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return "BJ"
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elif code.endswith(".CFE"):
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return "CFE"
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else:
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return "SH" # 默认上海
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def get_trading_days_between(
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start_date: date,
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end_date: date,
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calendar: Optional[List[date]] = None
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) -> List[date]:
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"""获取两个日期之间的交易日列表"""
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if calendar:
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return [d for d in calendar if start_date <= d <= end_date]
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# 如果没有提供交易日历，简单排除周末
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trading_days = []
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current = start_date
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while current <= end_date:
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if current.weekday() < 5: # 周一到周五
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trading_days.append(current)
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current += timedelta(days=1)
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return trading_days
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def get_default_date_range(days: int = 365) -> tuple:
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"""获取默认日期范围"""
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end_date = date.today()
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start_date = end_date - timedelta(days=days)
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return start_date, end_date
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def int_to_date(date_int: int) -> date:
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"""将整数日期(YYYYMMDD)转换为date对象"""
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return datetime.strptime(str(date_int), "%Y%m%d").date()
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def date_to_int(d: date) -> int:
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"""将date对象转换为整数日期(YYYYMMDD)"""
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return int(d.strftime("%Y%m%d"))
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