import datetime

import pytz

def text():

timezones = (

'Asia/Hong_Kong',

'America/New_York',

'Europe/London',

)

fmt = '%m-%d %H:%M:%S'

now = datetime.datetime.now()

text = "World Clock\n"

for tz_name in timezones:

tz = pytz.timezone(tz_name)

tz_now = now.astimezone(tz)

output = '{tz_name}:{tz_now_str}'.format(

tz_name = tz_name.split("/")[1],

tz_now_str = tz_now.strftime(fmt)

)

text = text + output + "\n"

return text

from luma.core.interface.serial import i2c, spi, pcf8574

from luma.core.interface.parallel import bitbang_6800

from luma.core.render import canvas

from luma.oled.device import ssd1306, ssd1309, ssd1325, ssd1331, sh1106, ws0010

from PIL import ImageFont

serial = i2c(port=1, address=0x3C)

device = sh1106(serial)

font1 = ImageFont.truetype('/usr/share/fonts/truetype/dejavu/DejaVuSansMono.ttf',8)

while True:

with canvas(device) as draw:

draw.rectangle(device.bounding_box, outline="white", fill="black")

draw.text((0, 0), text(), fill="white", font=font1)