PythonRegExメタ文字
メタ文字
メタ文字は、特別な意味を持つ文字です。
| Character | Description | Example | Try it |
|---|---|---|---|
| [] | A set of characters | "[a-m]" | |
| \ | Signals a special sequence (can also be used to escape special characters) | "\d" | |
| . | Any character (except newline character) | "he..o" | |
| ^ | Starts with | "^hello" | |
| $ | Ends with | "planet$" | |
| * | Zero or more occurrences | "he.*o" | |
| + | One or more occurrences | "he.+o" | |
| ? | Zero or one occurrence | "he.?o" | |
| {} | Exactly the specified number of occurrences | "he.{2}o" | |
| | | Either or | "falls|stays" | |
| () | Capture and group |