connect(host):

• Description: Connect to a host
• Arguments:
host (string): host name or IP address

terminate():
• Description: terminates the underlying x3270 subprocess. Once called, this Emulator instance must no longer be used.
• Arguments: none

exec_command(cmdstr):
• Description: Execute an x3270 command `cmdstr` gets sent directly to the x3270 subprocess on it’s stdin. Alternatively, there is some frequently used keys ‘shortcut’:

                 • send_enter() is equivalent to exec_command(b”Enter”)
                 • send_pf3() is equivalent to exec_command(b”PF(3)”)
                 • etc.

• Arguments:
cmdstr (string): x3270 command

wait_for_field():
• Description: Wait until the screen is ready, the cursor has been positioned on a modifiable field, and the keyboard is unlocked. Sometimes the server will “unlock” the keyboard but the screen will not yet be ready. In that case, an attempt to read or write to the screen will result in a ‘E’ keyboard status because we tried to read from a screen that is not yet ready. Using this method tells the client to wait until a field is detected and the cursor has been positioned on it.
• Arguments: none

string_get(ypos, xpos, length):
• Description: Get a string of ‘length’ at screen coordinates ‘ypos’/’xpos’. Coordinates are 1 based, as listed in the status area of the terminal.
• Arguments:
ypos (int): y position (row number)
xpos (int): x position (column number)
length (int): length of the string

string_found(ypos, xpos, string):
• Description: Return True if `string` is found at screen coordinates ‘ypos’/’xpos’, False otherwise. Coordinates are 1 based, as listed in the status area of the terminal.
• Arguments:
ypos (int): y position (row number)
xpos (int): x position (column number)
length (int): length of the string

move_to(ypos, xpos):
• Description: move the cursor to the given coordinates. Coordinates are 1 based, as listed in the status area of the terminal.
• Arguments:
ypos (int): y position (row number)
xpos (int): x position (column number)

send_string(tosend, ypos=none, xpos=none):
• Description: Send a string to the screen at the current cursor location or at screen coordinates ‘ypos’/’xpos’ if they are both given. Coordinates are 1 based, as listed in the status area of the terminal.
• Arguments:
tosend (string): string to be sent to the screen
ypos (int): y position (row number)
xpos (int): x position (column number)

fill_field(ypos, xpos, tosend, length):
• Description: Clears the field at the position given and inserts the string `tosend`. Coordinates are 1 based, as listed in the status area of the terminal. Raises: FieldTruncateError if ‘tosend’ is longer than ‘length’.
• Arguments:
ypos (int): y position (row number)
xpos (int): x position (column number)
tosend: the string to insert
length: the length of the field

delete_field():
• Description: Delete contents in field at current cursor location and positions, cursor at beginning of field.
• Arguments: none

save_screen(file_path):
• Description: Save the current screen as a file.
• Arguments:
file_path (string): file path and name