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13 lines
399 B
13 lines
399 B
def cut(instr: str, field_num: int = 0, delimiter: str = "-") -> str:
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"""
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Разделить входную строку `instr` разделительем `delimiter`
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и вернуть поле `field_num`.
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"""
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if instr is None:
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return ""
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parts = str(instr).split(delimiter)
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if field_num < len(parts):
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return parts[field_num]
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else:
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return ""
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