🔥 Blynk library for Python / MicroPython v0.2.0 is released!

The new official Blynk library v0.2.0 for Python is released and available via github and pip.

It contains better support for ESP32 boards and Raspberry Pi, API improvements.
In fact, the library was completely rewritten, as previous version had too many problems.

Please check out the new README and examples.

Check it out here: https://github.com/vshymanskyy/blynk-library-python
And of course, do not forget to give it a github star! :wink:

Happy Blynking!


Everything im testing works great. I found once i got into it, it was hard to stop playing :slight_smile:

notes: the timer lib wasnt included with the main lib when i ran the pip install. no big deal, just copied them over.
table.widget support and email would be my only requests from this library.

Thanks @vshymanskyy , nice work!

I agree… something about Python, it’s syntax, and the speed/simplicity of “edit, save, run/test, edit, save, run/test…” (well, at least on a RPi) is a refreshing change from the Arduino IDE method.

I am finally even able to use Python 3.x

I looks like it is on its way… at least this small part of it is referenced in the library :wink:


Like with BlynkTimer, clearly a work in progress, so keep updating as and when it looks like updates are released.

Just a quick note:

In the tweet _notify.py library example (or when checking a response from a button),
if value[0]: # is the the button is pressed?
checks for a string ‘0’ or ‘1’ for being a “list” so, the correct syntax should be
if (value[0] == '1'): # the button is pressed?

For non Python library, the value is an int.

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Thanks, you’re right

Opps… so looks like I will soon have to change all my previously changed code back :stuck_out_tongue:

After trial and error I was able to get this to work…

if value[0] == str('1'):

@vshymanskyy what do you mean with the note on line 70 of the BlynkLib These are mainly for backward-compatibility you can use “blynk.ON()” instead because blynk.ON doesn’t substitute “VIRTUAL_WRITE/READ”, right?

Also, virtual pins (blynk, pin) are always treated as strings, right?

So, the following code is not correct

v_led_pin = 1

while this one is?

v_led_pin = '1'
v_arry = ['1', '2', '3']


Hi @vshymanskyy, With the following test code I converted the old “@blynk.VIRTUAL_WRITE” function to the new one “@blynk.ON” as per the library’s note

These are mainly for backward-compatibility you can use “blynk.ON()” instead

However, I noticed an inconsistency with the type of variable it can be used. At times an array is admitted and at time it’s not.


#import libraries
from __future__ import print_function
import BlynkLib
from BlynkTimer import BlynkTimer
from subprocess import check_output
import logging, time, gc
from datetime import datetime as dt


BLYNK_AUTH = '****' 

# Initialize Blynkxy
blynk = BlynkLib.Blynk(BLYNK_AUTH)

#virtual pins array
v_arry = ['0','1','V2','V3'] #<--- 'V2' works but not 'V3'

#*** old format ***
def btn0_handler(value):
  btn0status = value[0]
  if btn0status == '1':
    print('btn v0 pressed')
    print('btn v0 released')

def btn1_handler(value):
  #security check
  #btn1 is activated only when btn0 is being pressed
  if value[0] == '1':
          print('btn v1 pressed')

#*** new format ***
def blynk_connected(ping):
  print('Blynk ready. Ping:', ping, 'ms')

def btn2_handler(value):
  if(value[0] == '1'):
    print('btn v2 pressed')

@blynk.ON('readV*')    #is this correct?
def uptime_handle(V3): #won't accept an array
  #get board total uptime
  cmd = 'uptime -p'
  t = check_output(cmd, shell = True).decode("utf-8")
  t = t.rstrip('\n\r')
  t = t.replace('up','')
  blynk.virtual_write(V3, t)

if __name__ == "__main__":
  while True:
    except IOError as e:
      if(e.errno == errno.EPIPE):
        logging.exception("msg from blynkmain @ " + str(dt.now()))

Hmm… i’m confused… you say “official library”. Whats the difference to the following one? Especially on the attribute “official”?

I guess some people are helping out by adding extra codes to the lib making it “unofficial” ?

I think they are bothe “official” in the sense that they are mostly written by Blynk’s own @vshymanskyy… but the newest copy/version (0.2.4) is now under the Blynkkk GitHub banner as of a couple of months ago, probably making it the new, new official version :stuck_out_tongue:

Yes it looks like this is the new, new official library.
But I neither use or work on this one :wink: This is a fork for one of our potential customers.

I see… well, I don’t want to mess up my installation with any potentially conflicting code, so I will stick with just your official 0.2.0 :stuck_out_tongue: Hope you do keep it updated as needed.

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On the subject of Python is anyone using SSL? If so could we see the code snippet please.

@Costas Hey Paul, just an off subject question: are you running your Python projects on a local or blynk-cloud server?

@Emilio during the test phase we run local Python to cloud based Blynk server but we also have remote Python server to a separate cloud based Blynker server. The second scenario is basically our production model after testing.

Problem: blynk.set_user_task(my_user_task, 3000)
AttributeError: ‘Blynk’ object has no attribute ‘set_user_task’
Question: what to do so with the attribute error,can someone answer me??

from gpiozero import LED, Button, Buzzer
import BlynkLib
import Adafruit_DHT

led1 = LED(17)
led2 = LED(18)
led3 = LED(27)
led4 = LED(22)
led5 = LED(25)
led6 = LED(12)
led7 = LED(13)
led8 = LED(19)

sw1 = Button(21)
buzzer = Buzzer(26)
sensor_type = Adafruit_DHT.DHT22
sensor_pin = 17

BLYNK_AUTH = 'YourAuthToken'

# Initialize Blynk
blynk = BlynkLib.Blynk(BLYNK_AUTH)

# Register Virtual Pins
def my_write_handler(value):
    print('Current V1 value: {}'.format(value[0]))
    if int(format(value[0])) == 1:

def sw1Pressed():
    buzzer.beep(0.1, 0.1, 2)
    print('SW1 is pressed')
    blynk.notify('SW1 is pressed')

def my_user_task():
    humidity, temperature = Adafruit_DHT.read_retry(sensor_type, sensor_pin)
    print('Humidity = {:.2f}%\tTemperature = {:.2f}C'.format(humidity, temperature))
    blynk.virtual_write(2, '{:.2f}'.format(temperature))
    blynk.virtual_write(3, '{:.2f}'.format(humidity))

blynk.set_user_task(my_user_task, 3000)

sw1.when_pressed = sw1Pressed

    while True:

except KeyboardInterrupt:

this was removed completely. please check out new examples

where is the new example?

Maybe the timer.py example here?: