ERROR:root:Error parsing

[ERRORroot]

Hi, I am failing to install cometblue on Raspian Jessie (Raspberry Pi 3) :

sudo python setup.py install returns error ...

ERROR:root:Error parsing
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/pbr/core.py", line 111, in per
    attrs = util.cfg_to_args(path, dist.script_args)
  File "/usr/local/lib/python2.7/dist-packages/pbr/util.py", line 246, in cfg_to_args
    pbr.hooks.setup_hook(config)
  File "/usr/local/lib/python2.7/dist-packages/pbr/hooks/__init__.py", line 25, in setup_hook
    metadata_config.run()
  File "/usr/local/lib/python2.7/dist-packages/pbr/hooks/base.py", line 27, in run
    self.hook()
  File "/usr/local/lib/python2.7/dist-packages/pbr/hooks/metadata.py", line 26, in hook
    self.config['name'], self.config.get('version', None))
  File "/usr/local/lib/python2.7/dist-packages/pbr/packaging.py", line 725, in get_version
    raise Exception("Versioning for this project requires either an sdist"
Exception: Versioning for this project requires either an sdist tarball, or access to an upstream git repository. Are you sure that git is installed?
error in setup command: Error parsing /home/pi/cometblue/cometblue-master/setup.cfg: Exception: Versioning for this project requires either an sdist tarball, or access to an upstream git repository. Are you sure that git is installed?

for your information

pip install -r requirements.txt

gave no errors

Requirement already satisfied (use --upgrade to upgrade): click in /usr/local/lib/python2.7/dist-packages (from -r requirements.txt (line 1))
Requirement already satisfied (use --upgrade to upgrade): gattlib in /usr/local/lib/python2.7/dist-packages (from -r requirements.txt (line 2))
Requirement already satisfied (use --upgrade to upgrade): pbr in /usr/local/lib/python2.7/dist-packages (from -r requirements.txt (line 3))
Requirement already satisfied (use --upgrade to upgrade): shellescape in /usr/local/lib/python2.7/dist-packages (from -r requirements.txt (line 4))
Requirement already satisfied (use --upgrade to upgrade): six in /usr/local/lib/python2.7/dist-packages (from -r requirements.txt (line 5))
Requirement already satisfied (use --upgrade to upgrade): tabulate in /usr/local/lib/python2.7/dist-packages (from -r requirements.txt (line 6))
Cleaning up...

Can anyone please help?

[anson-tang]

you need to install git

apt install -y git