Installation Packages error

[AxelTdev]

Hi,
When i try to install python packages with:
sudo pip install oandapy

There is this error :
Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-install-xmyyfrsm/pysimplemodel/
My Python version is 2.7.13.
This is the complete output:
` Complete output from command python setup.py egg_info:
Traceback (most recent call last):
File "", line 1, in
File "/tmp/pip-install-xmyyfrsm/pysimplemodel/setup.py", line 6, in
from simple_model.version import version
File "/tmp/pip-install-xmyyfrsm/pysimplemodel/simple_model/init.py", line 2, in
from .builder import model_builder, model_many_builder
File "/tmp/pip-install-xmyyfrsm/pysimplemodel/simple_model/builder.py", line 3, in
from .models import Model
File "/tmp/pip-install-xmyyfrsm/pysimplemodel/simple_model/models.py", line 5, in
from .fields import ModelField, Unset
File "/tmp/pip-install-xmyyfrsm/pysimplemodel/simple_model/fields.py", line 24
return (f'ModelField(model_class={self.model_class!r}, name={self.name!r}, '
^
SyntaxError: invalid syntax

----------------------------------------

Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-install-xmyyfrsm/pysimplemodel/
`
Thanks in advance

[chemlavictor]

I Have the same problem

[Draichi]

same here

but i could install using pip install git+https://github.com/oanda/oandapy.git