9 lines
284 B
Python
9 lines
284 B
Python
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def is_valid_str(s):
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"""判断字符串是否有效，即非空且非空格。"""
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return isinstance(s, str) and len(s.strip()) > 0
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def is_empty_str(s):
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"""判断字符串是否为空，即空或仅包含空格。"""
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return isinstance(s, str) and len(s.strip()) == 0
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