diff options
Diffstat (limited to 'Lib/_pyio.py')
| -rw-r--r-- | Lib/_pyio.py | 35 |
1 files changed, 17 insertions, 18 deletions
diff --git a/Lib/_pyio.py b/Lib/_pyio.py index aab60db..137ebcb 100644 --- a/Lib/_pyio.py +++ b/Lib/_pyio.py @@ -34,7 +34,7 @@ BlockingIOError = BlockingIOError def open(file, mode="r", buffering=-1, encoding=None, errors=None, newline=None, closefd=True, opener=None): - r"""Open file and return a stream. Raise IOError upon failure. + r"""Open file and return a stream. Raise OSError upon failure. file is either a text or byte string giving the name (and the path if the file isn't in the current working directory) of the file to @@ -200,7 +200,7 @@ def open(file, mode="r", buffering=-1, encoding=None, errors=None, buffering = DEFAULT_BUFFER_SIZE try: bs = os.fstat(raw.fileno()).st_blksize - except (os.error, AttributeError): + except (OSError, AttributeError): pass else: if bs > 1: @@ -254,7 +254,7 @@ class OpenWrapper: try: UnsupportedOperation = io.UnsupportedOperation except AttributeError: - class UnsupportedOperation(ValueError, IOError): + class UnsupportedOperation(ValueError, OSError): pass @@ -278,7 +278,7 @@ class IOBase(metaclass=abc.ABCMeta): readinto) needed. Text I/O classes work with str data. Note that calling any method (even inquiries) on a closed stream is - undefined. Implementations may raise IOError in this case. + undefined. Implementations may raise OSError in this case. IOBase (and its subclasses) support the iterator protocol, meaning that an IOBase object can be iterated over yielding the lines in a @@ -294,7 +294,7 @@ class IOBase(metaclass=abc.ABCMeta): ### Internal ### def _unsupported(self, name): - """Internal: raise an IOError exception for unsupported operations.""" + """Internal: raise an OSError exception for unsupported operations.""" raise UnsupportedOperation("%s.%s() not supported" % (self.__class__.__name__, name)) @@ -441,7 +441,7 @@ class IOBase(metaclass=abc.ABCMeta): def fileno(self): """Returns underlying file descriptor (an int) if one exists. - An IOError is raised if the IO object does not use a file descriptor. + An OSError is raised if the IO object does not use a file descriptor. """ self._unsupported("fileno") @@ -699,13 +699,13 @@ class _BufferedIOMixin(BufferedIOBase): def seek(self, pos, whence=0): new_position = self.raw.seek(pos, whence) if new_position < 0: - raise IOError("seek() returned an invalid position") + raise OSError("seek() returned an invalid position") return new_position def tell(self): pos = self.raw.tell() if pos < 0: - raise IOError("tell() returned an invalid position") + raise OSError("tell() returned an invalid position") return pos def truncate(self, pos=None): @@ -927,7 +927,7 @@ class BufferedReader(_BufferedIOMixin): """Create a new buffered reader using the given readable raw IO object. """ if not raw.readable(): - raise IOError('"raw" argument must be readable.') + raise OSError('"raw" argument must be readable.') _BufferedIOMixin.__init__(self, raw) if buffer_size <= 0: @@ -1074,7 +1074,7 @@ class BufferedWriter(_BufferedIOMixin): def __init__(self, raw, buffer_size=DEFAULT_BUFFER_SIZE): if not raw.writable(): - raise IOError('"raw" argument must be writable.') + raise OSError('"raw" argument must be writable.') _BufferedIOMixin.__init__(self, raw) if buffer_size <= 0: @@ -1138,7 +1138,7 @@ class BufferedWriter(_BufferedIOMixin): errno.EAGAIN, "write could not complete without blocking", 0) if n > len(self._write_buf) or n < 0: - raise IOError("write() returned incorrect number of bytes") + raise OSError("write() returned incorrect number of bytes") del self._write_buf[:n] def tell(self): @@ -1174,10 +1174,10 @@ class BufferedRWPair(BufferedIOBase): The arguments are two RawIO instances. """ if not reader.readable(): - raise IOError('"reader" argument must be readable.') + raise OSError('"reader" argument must be readable.') if not writer.writable(): - raise IOError('"writer" argument must be writable.') + raise OSError('"writer" argument must be writable.') self.reader = BufferedReader(reader, buffer_size) self.writer = BufferedWriter(writer, buffer_size) @@ -1248,7 +1248,7 @@ class BufferedRandom(BufferedWriter, BufferedReader): with self._read_lock: self._reset_read_buf() if pos < 0: - raise IOError("seek() returned invalid position") + raise OSError("seek() returned invalid position") return pos def tell(self): @@ -1727,7 +1727,7 @@ class TextIOWrapper(TextIOBase): if not self._seekable: raise UnsupportedOperation("underlying stream is not seekable") if not self._telling: - raise IOError("telling position disabled by next() call") + raise OSError("telling position disabled by next() call") self.flush() position = self.buffer.tell() decoder = self._decoder @@ -1814,7 +1814,7 @@ class TextIOWrapper(TextIOBase): chars_decoded += len(decoder.decode(b'', final=True)) need_eof = 1 if chars_decoded < chars_to_skip: - raise IOError("can't reconstruct logical file position") + raise OSError("can't reconstruct logical file position") # The returned cookie corresponds to the last safe start point. return self._pack_cookie( @@ -1891,7 +1891,7 @@ class TextIOWrapper(TextIOBase): # Skip chars_to_skip of the decoded characters. if len(self._decoded_chars) < chars_to_skip: - raise IOError("can't restore logical file position") + raise OSError("can't restore logical file position") self._decoded_chars_used = chars_to_skip # Finally, reset the encoder (merely useful for proper BOM handling) @@ -2054,7 +2054,6 @@ class StringIO(TextIOWrapper): if not isinstance(initial_value, str): raise TypeError("initial_value must be str or None, not {0}" .format(type(initial_value).__name__)) - initial_value = str(initial_value) self.write(initial_value) self.seek(0) |