map2loop.mapdata.BytesIO#
- class map2loop.mapdata.BytesIO(initial_bytes=b'')#
Bases:
_BufferedIOBaseBuffered I/O implementation using an in-memory bytes buffer.
- __init__(*args, **kwargs)#
Methods
__init__(*args, **kwargs)close()Disable all I/O operations.
detach()Disconnect this buffer from its underlying raw stream and return it.
fileno()Return underlying file descriptor if one exists.
flush()Does nothing.
Get a read-write view over the contents of the BytesIO object.
getvalue()Retrieve the entire contents of the BytesIO object.
isatty()Always returns False.
read([size])Read at most size bytes, returned as a bytes object.
read1([size])Read at most size bytes, returned as a bytes object.
readable()Returns True if the IO object can be read.
readinto(buffer, /)Read bytes into buffer.
readinto1(buffer, /)readline([size])Next line from the file, as a bytes object.
readlines([size])List of bytes objects, each a line from the file.
seek(pos[, whence])Change stream position.
seekable()Returns True if the IO object can be seeked.
tell()Current file position, an integer.
truncate([size])Truncate the file to at most size bytes.
writable()Returns True if the IO object can be written.
write(b, /)Write bytes to file.
writelines(lines, /)Write lines to the file.
Attributes
True if the file is closed.
- close()#
Disable all I/O operations.
- closed#
True if the file is closed.
- detach()#
Disconnect this buffer from its underlying raw stream and return it.
After the raw stream has been detached, the buffer is in an unusable state.
- fileno()#
Return underlying file descriptor if one exists.
Raise OSError if the IO object does not use a file descriptor.
- flush()#
Does nothing.
- getbuffer()#
Get a read-write view over the contents of the BytesIO object.
- getvalue()#
Retrieve the entire contents of the BytesIO object.
- isatty()#
Always returns False.
BytesIO objects are not connected to a TTY-like device.
- read(size=-1, /)#
Read at most size bytes, returned as a bytes object.
If the size argument is negative, read until EOF is reached. Return an empty bytes object at EOF.
- read1(size=-1, /)#
Read at most size bytes, returned as a bytes object.
If the size argument is negative or omitted, read until EOF is reached. Return an empty bytes object at EOF.
- readable()#
Returns True if the IO object can be read.
- readinto(buffer, /)#
Read bytes into buffer.
Returns number of bytes read (0 for EOF), or None if the object is set not to block and has no data to read.
- readline(size=-1, /)#
Next line from the file, as a bytes object.
Retain newline. A non-negative size argument limits the maximum number of bytes to return (an incomplete line may be returned then). Return an empty bytes object at EOF.
- readlines(size=None, /)#
List of bytes objects, each a line from the file.
Call readline() repeatedly and return a list of the lines so read. The optional size argument, if given, is an approximate bound on the total number of bytes in the lines returned.
- seek(pos, whence=0, /)#
Change stream position.
- Seek to byte offset pos relative to position indicated by whence:
0 Start of stream (the default). pos should be >= 0; 1 Current position - pos may be negative; 2 End of stream - pos usually negative.
Returns the new absolute position.
- seekable()#
Returns True if the IO object can be seeked.
- tell()#
Current file position, an integer.
- truncate(size=None, /)#
Truncate the file to at most size bytes.
Size defaults to the current file position, as returned by tell(). The current file position is unchanged. Returns the new size.
- writable()#
Returns True if the IO object can be written.
- write(b, /)#
Write bytes to file.
Return the number of bytes written.
- writelines(lines, /)#
Write lines to the file.
Note that newlines are not added. lines can be any iterable object producing bytes-like objects. This is equivalent to calling write() for each element.