File Access

Opening files

fileobject = open(filename, mode)

mode: [r, w, a, r+][b]   (default: r)
    r    read-only  (default)
    w    write-only (existing file erased)
    a    append (add to the end of existing file)
    r+   read-write
    b    binary mode (for portability to Windows, Macintosh)

Reading files

string = fileobject.read([size])

• By default, the entire file is read (the same applies if size is negative).

string = fileobject.readline()

• Reads the current line, including the \n character.
• Returns an empty string if the end of the file has been reached.

list = fileobject.readlines()

• Reads the entire file, returning a list of each line.
  

Writing files

fileobject.write(string)

fileobject.writelines(list)

• Writes a list of strings to the file.

File position

integer = fileobject.tell()

• Gets the current file position (0-based).

fileobject.seek(offset, relative_to)

relative_to: [0, 1, 2]   (default: 0)
    0    Beginning of the file
    1    Current file position
    2    End of the file

• Changes the file position.

Closing files

fileobject.close()