| 82 | |
| 83 | |
| 84 | class PythonRepl(PythonInput): |
| 85 | def __init__(self, *a, **kw) -> None: |
| 86 | self._startup_paths: Sequence[str | Path] | None = kw.pop("startup_paths", None) |
| 87 | super().__init__(*a, **kw) |
| 88 | self._load_start_paths() |
| 89 | |
| 90 | def _load_start_paths(self) -> None: |
| 91 | "Start the Read-Eval-Print Loop." |
| 92 | if self._startup_paths: |
| 93 | for path in self._startup_paths: |
| 94 | if os.path.exists(path): |
| 95 | with open(path, "rb") as f: |
| 96 | code = compile(f.read(), path, "exec") |
| 97 | exec(code, self.get_globals(), self.get_locals()) |
| 98 | else: |
| 99 | output = self.app.output |
| 100 | output.write(f"WARNING | File not found: {path}\n\n") |
| 101 | |
| 102 | def run_and_show_expression(self, expression: str) -> None: |
| 103 | try: |
| 104 | # Eval. |
| 105 | try: |
| 106 | result = self.eval(expression) |
| 107 | except KeyboardInterrupt: |
| 108 | # KeyboardInterrupt doesn't inherit from Exception. |
| 109 | raise |
| 110 | except SystemExit: |
| 111 | raise |
| 112 | except ReplExit: |
| 113 | raise |
| 114 | except BaseException as e: |
| 115 | self._handle_exception(e) |
| 116 | else: |
| 117 | if isinstance(result, exit): |
| 118 | # When `exit` is evaluated without parentheses. |
| 119 | # Automatically trigger the `ReplExit` exception. |
| 120 | raise ReplExit |
| 121 | |
| 122 | # Print. |
| 123 | if result is not None: |
| 124 | self._show_result(result) |
| 125 | if self.insert_blank_line_after_output: |
| 126 | self.app.output.write("\n") |
| 127 | |
| 128 | # Loop. |
| 129 | self.current_statement_index += 1 |
| 130 | self.signatures = [] |
| 131 | |
| 132 | except KeyboardInterrupt as e: |
| 133 | # Handle all possible `KeyboardInterrupt` errors. This can |
| 134 | # happen during the `eval`, but also during the |
| 135 | # `show_result` if something takes too long. |
| 136 | # (Try/catch is around the whole block, because we want to |
| 137 | # prevent that a Control-C keypress terminates the REPL in |
| 138 | # any case.) |
| 139 | self._handle_keyboard_interrupt(e) |
| 140 | |
| 141 | def _get_output_printer(self) -> OutputPrinter: |