define new lcd character

TypeError

import wiringpi2 as wiringpi

wiringpi.wiringPiSetupSys();

# connecting to the lcd (via i2c)
af_base = 100

af_rs = af_base + 0
af_e = af_base + 2
af_db4 = af_base + 4
af_db5 = af_base + 5
af_db6 = af_base + 6
af_db7 = af_base + 7

af_backlight = af_base + 3

wiringpi.pcf8574Setup(af_base, 0x27)

lcd_handle = wiringpi.lcdInit(4, 20, 4, af_rs, af_e, af_db4, af_db5, af_db6, af_db7, 0, 0, 0, 0)

# turning on the backlight
wiringpi.digitalWrite(af_backlight, 1)

# test if display runs as expected
wiringpi.lcdPrintf(lcd_handle, "Hello World")

# now comes the "tricky part"
wiringpi.lcdCharDef(lcd_handle, 0, b'\x0A\x04\x0A\x11\x1F\x11\x11\x00')

# OUTPUT (IPython Console)
# ---------------------------------------------------------------------------
# TypeError                                 Traceback (most recent call last)
# <ipython-input-2-096051f2f529> in <module>()
# ----> 1 wiringpi.lcdCharDef(lcd_handle, 0, b'\x0A\x04\x0A\x11\x1F\x11\x11\x00')
# 
# TypeError: in method 'lcdCharDef', argument 3 of type 'unsigned char [8]'