Python in a Nutshell

Name

write_byte

Synopsis

                        m.write_byte(byte)

Writes byte, which must be a single-character string, into mapping m at the current position of m’s file pointer, overwriting the byte that was there, and then advances m’s file pointer by 1. When x is a single-character string, m .write_byte( x ) is similar to m .write( x ). However, if m’s file pointer is at the end of m, m .write_byte( x ) silently does nothing, while m .write( x ) raises a ValueError exception. Note that this is the reverse of the relationship between read and read_byte at end-of-file: write and read_byte raise ValueError, while read and write_byte don’t.