38 lines
854 B
Python
38 lines
854 B
Python
 
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import unicodedata
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def parse_seconds(s: str) -> int | None:
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"""解析 '30' 或 '3*60' 形式的时长秒数,非法输入返回 None"""
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s = s.strip()
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if not s or not all(c.isdigit() or c == "*" for c in s):
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return None
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try:
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result = 1
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for part in s.split("*"):
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result *= int(part)
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return result
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except ValueError:
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return None
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def strip_prefix(text: str, prefixes) -> str:
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"""依次移除前缀后去空白"""
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for p in prefixes:
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text = text.removeprefix(p)
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return text.strip()
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def is_number(s) -> bool:
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"""判断字符串是否可视为数字"""
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try:
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float(s)
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return True
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except ValueError:
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pass
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try:
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unicodedata.numeric(s)
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return True
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except (TypeError, ValueError):
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pass
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return False
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