split参数
Parameter Values
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| ** | Description |
| Parameter** | |
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| separator | Optional. Specifies the separator to use when |
| | splitting the string. By default any whitespace is a |
| | separator |
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| maxsplit | Optional. Specifies how many splits to do. Default |
| | value is -1, which is “all occurrences” |
| | |
| | 即匹配几次 |
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