Function _readline_with_echo_char

Lib/getpass.py:189–215

(stream, input, echo_char)

def _readline_with_echo_char(stream, input, echo_char):
    passwd = ""
    eof_pressed = False
    while True:
        char = input.read(1)
        if char == '\n' or char == '\r':
            break
        elif char == '\x03':
            raise KeyboardInterrupt
        elif char == '\x7f' or char == '\b':
            if passwd:
                stream.write("\b \b")
                stream.flush()
            passwd = passwd[:-1]
        elif char == '\x04':
            if eof_pressed:
                break
            else:
                eof_pressed = True
        elif char == '\x00':
            continue
        else:
            passwd += char
            stream.write(echo_char)
            stream.flush()
            eof_pressed = False
    return passwd


def getuser():