esphome won't start - missing argument

[lwqcz]

Operating environment/Installation (Hass.io/Docker/pip/etc.):

• pip on Xenial i386 machine

ESP (ESP32/ESP8266, Board/Sonoff):

ESP8266 onboard Wemos D1 Mini

Affected component:

https://esphome.io/guides/getting_started_command_line.html

Description of problem:
I've followed CLI getting started procedure and everything was fine.
When I've tried to start a text based wizard of dashboard - only this error was thrown thru stderr:

Traceback (most recent call last):
  File "/usr/local/bin/esphome", line 7, in <module>
    from esphome.__main__ import main
  File "/usr/local/lib/python3.5/dist-packages/esphome/__main__.py", line 10, in <module>
    from esphome import const, writer, yaml_util
  File "/usr/local/lib/python3.5/dist-packages/esphome/writer.py", line 7, in <module>
    from esphome.config import iter_components
  File "/usr/local/lib/python3.5/dist-packages/esphome/config.py", line 15, in <module>
    from esphome import core, core_config, yaml_util
  File "/usr/local/lib/python3.5/dist-packages/esphome/core_config.py", line 5, in <module>
    import esphome.codegen as cg
  File "/usr/local/lib/python3.5/dist-packages/esphome/codegen.py", line 11, in <module>
    from esphome.cpp_generator import (  # noqa
  File "/usr/local/lib/python3.5/dist-packages/esphome/cpp_generator.py", line 23, in <module>
    Type[bool], Type[int], Type[float], List[Any]]
  File "/usr/lib/python3.5/typing.py", line 552, in __getitem__
    dict(self.__dict__), parameters, _root=True)
  File "/usr/lib/python3.5/typing.py", line 512, in __new__
    for t2 in all_params - {t1} if not isinstance(t2, TypeVar)):
  File "/usr/lib/python3.5/typing.py", line 512, in <genexpr>
    for t2 in all_params - {t1} if not isinstance(t2, TypeVar)):
  File "/usr/lib/python3.5/typing.py", line 1077, in __subclasscheck__
    if super().__subclasscheck__(cls):
  File "/usr/lib/python3.5/abc.py", line 225, in __subclasscheck__
    for scls in cls.__subclasses__():
TypeError: descriptor '__subclasses__' of 'type' object needs an argument

Problem-relevant YAML-configuration entries:

# no applicable

Logs (if applicable):

# no applicable

Additional information and things you've tried:

• I assumed that my Python3 env is working as the esptool.py or other tools are working correctly.

[OttoWinter]

ESPHome 1.14+ requires Python 3.6+ - you have 3.5 installed.

Seems to be an error in setup.py - it's accepting py3.5 where it should reject that python version.

Please upgrade your python install to 3.6 or higher.

[lwqcz]

I see :-) after upgrade to python3.6 and setup of env, everything is working fine I assume :-) thank you ...

Anyway ... Where can I see this requirement from a common user perspective at https://esphome.io/guides/getting_started_command_line.html ?
I didn't notice even use of pip3, but pip instead ...

[OttoWinter]

@lwqcz It's all in a transition phase right now.

in 1.13.6, only python 2 was really supported (py3 worked, but was experimental).

in 1.14.x, both py2/3 are supported - hence the use of pip in the docs.

in 1.15.x, only py3 will be supported, then the docs will be updated to reflect that.

[lwqcz]

🆗 I understand now, thank you a bunch for your great work and besides, I'll contribute too - I'm interested in support for Melexis's IR sensors and others 😎