Install failing for v1.0.0

[abhijithshaji]

The problem

Installion for Appium-Python-Client 1.0.0 is failing, tried pip install Appium-Python-Client and Installing from tarball, both greeted with the same following error:

$pip install Appium-Python-Client

Collecting Appium-Python-Client
  Using cached Appium-Python-Client-1.0.0.tar.gz (51 kB)
    ERROR: Command errored out with exit status 1:
     command: /Users/abhi/.pyenv/versions/2.7.17/bin/python2.7 -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/private/var/folders/1t/yxydn3z14633322zns_jz2br0000gn/T/pip-install-uc43Rh/Appium-Python-Client/setup.py'"'"'; __file__='"'"'/private/var/folders/1t/yxydn3z14633322zns_jz2br0000gn/T/pip-install-uc43Rh/Appium-Python-Client/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base /private/var/folders/1t/yxydn3z14633322zns_jz2br0000gn/T/pip-pip-egg-info-OSMsNe
         cwd: /private/var/folders/1t/yxydn3z14633322zns_jz2br0000gn/T/pip-install-uc43Rh/Appium-Python-Client/
    Complete output (8 lines):
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/private/var/folders/1t/yxydn3z14633322zns_jz2br0000gn/T/pip-install-uc43Rh/Appium-Python-Client/setup.py", line 19, in <module>
        from appium.common.helper import library_version
      File "appium/common/helper.py", line 20
        def extract_const_attributes(cls: type) -> Dict[str, Any]:
                                        ^
    SyntaxError: invalid syntax
    ----------------------------------------
ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.

Environment

• Appium version (or git revision) that exhibits the issue: 1.0.0
• Last Appium version that did not exhibit the issue (if applicable): 0.52
• Desktop OS/version used to run Appium: macOS 10.15.4
• python: 2.7.17, 2.7.16
• pip: 20.1 & 18.1

Details

Install works with `pip install Appium-Python-Client==0.52

[shibupanda]

@abhijithshaji
Seems it drops py2 support.
This version require Support 3.7+ as per the changelog
dcc54d9#diff-de0a9b67ffe2874a076b5fdb15bad484R40

[KazuCocoa]

Yes, 1.0.0 support only Python 3 as addressed in Notice https://pypi.org/project/Appium-Python-Client/

Please use 0.x for Python 2.

[KazuCocoa]

The Python2 branch is https://github.com/appium/python-client/tree/python2

[kaustubh275]

Use pip install Appium-Python-Client==0.52 for python 2.