pip install -e . => mlagents-envs 0.8.1 has requirement Pillow<=5.4.1,>=4.2.1, but you'll have pillow 6.0.0 which is incompatible.

[juva]

E:\mobilework\ml-agents-master\ml-agents>mlagents-learn config/trainer_config.yaml --run-id=firstRun --train
Traceback (most recent call last):
File "d:\users\jhfeng\appdata\local\programs\python\python36\lib\site-packages\pkg_resources_init_.py", line 583, in build_master
ws.require(requires)
File "d:\users\jhfeng\appdata\local\programs\python\python36\lib\site-packages\pkg_resources_init.py", line 900, in require
needed = self.resolve(parse_requirements(requirements))
File "d:\users\jhfeng\appdata\local\programs\python\python36\lib\site-packages\pkg_resources_init_.py", line 791, in resolve
raise VersionConflict(dist, req).with_context(dependent_req)
pkg_resources.ContextualVersionConflict: (Pillow 6.0.0 (d:\users\jhfeng\appdata\local\programs\python\python36\lib\site-packages), Requirement.parse('Pillow<=5.4.1,>=4.2.1'), {'mlagents-envs'})

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "D:\Users\jhfeng\AppData\Local\Programs\Python\Python36\Scripts\mlagents-learn-script.py", line 6, in
from pkg_resources import load_entry_point
File "d:\users\jhfeng\appdata\local\programs\python\python36\lib\site-packages\pkg_resources_init_.py", line 3241, in
@call_aside
File "d:\users\jhfeng\appdata\local\programs\python\python36\lib\site-packages\pkg_resources_init.py", line 3225, in call_aside
f(*args, **kwargs)
File "d:\users\jhfeng\appdata\local\programs\python\python36\lib\site-packages\pkg_resources_init.py", line 3254, in _initialize_master_working_set
working_set = WorkingSet.build_master()
File "d:\users\jhfeng\appdata\local\programs\python\python36\lib\site-packages\pkg_resources_init.py", line 585, in _build_master
return cls.build_from_requirements(requires)
File "d:\users\jhfeng\appdata\local\programs\python\python36\lib\site-packages\pkg_resources_init.py", line 598, in build_from_requirements
dists = ws.resolve(reqs, Environment())
File "d:\users\jhfeng\appdata\local\programs\python\python36\lib\site-packages\pkg_resources_init.py", line 791, in resolve
raise VersionConflict(dist, req).with_context(dependent_req)
pkg_resources.ContextualVersionConflict: (Pillow 6.0.0 (d:\users\jhfeng\appdata\local\programs\python\python36\lib\site-packages), Requirement.parse('Pillow<=5.4.1,>=4.2.1'), {'mlagents-envs'})

E:\mobilework\ml-agents-master\ml-agents>

like #1939

[Llain55]

had this problem myself at one point. You'll have to uninstall your current version of pillow using
pip uninstall pillow
once it has uninstalled successfully reinstall using required version
pip install pillow==5.4.1

hopefully this works for you!

[harperj]

Hi @juva -- what @Llain55 said should work. You might also consider using a virtualenv so that ML-Agents dependencies can be managed separately from your global dependencies.

[juva]

@Llain55 @harperj
thanks,it really works!

[lock]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.