| 371 | raise TypeError('only nodes with atom "UInt8Atom" are allowed') |
| 372 | |
| 373 | def _check_mode(self, mode): |
| 374 | if not isinstance(mode, str): |
| 375 | raise TypeError("invalid mode: %r" % mode) |
| 376 | |
| 377 | modes = set(mode) |
| 378 | if modes - set("arwb+tU") or len(mode) > len(modes): |
| 379 | raise ValueError("invalid mode: %r" % mode) |
| 380 | |
| 381 | reading = "r" in modes |
| 382 | writing = "w" in modes |
| 383 | appending = "a" in modes |
| 384 | # updating = "+" in modes |
| 385 | text = "t" in modes |
| 386 | binary = "b" in modes |
| 387 | |
| 388 | if "U" in modes: |
| 389 | if writing or appending: |
| 390 | raise ValueError("can't use U and writing mode at once") |
| 391 | reading = True |
| 392 | |
| 393 | if text and binary: |
| 394 | raise ValueError("can't have text and binary mode at once") |
| 395 | |
| 396 | if reading + writing + appending > 1: |
| 397 | raise ValueError("can't have read/write/append mode at once") |
| 398 | |
| 399 | if not (reading or writing or appending): |
| 400 | raise ValueError("must have exactly one of read/write/append mode") |
| 401 | |
| 402 | def _cross_check_mode(self, mode, h5filemode): |
| 403 | # XXX: check |