async and await are reserved keywords in Python 3.7 and raise a SyntaxError when used as variables

[geowurster]

This package uses at least await as a variable name, as evidenced by:

Traceback (most recent call last):
  File "/Users/kevin.wurster/code/notebooks/venv/bin/planet", line 7, in <module>
    from planet.scripts import main
  File "/Users/kevin.wurster/code/notebooks/venv/lib/python3.7/site-packages/planet/scripts/__init__.py", line 15, in <module>
    from planet.scripts import cli
  File "/Users/kevin.wurster/code/notebooks/venv/lib/python3.7/site-packages/planet/scripts/cli.py", line 19, in <module>
    from planet import api
  File "/Users/kevin.wurster/code/notebooks/venv/lib/python3.7/site-packages/planet/api/__init__.py", line 18, in <module>
    from .client import (ClientV1)
  File "/Users/kevin.wurster/code/notebooks/venv/lib/python3.7/site-packages/planet/api/client.py", line 17, in <module>
    from .dispatch import RequestsDispatcher
  File "/Users/kevin.wurster/code/notebooks/venv/lib/python3.7/site-packages/planet/api/dispatch.py", line 24, in <module>
    from . models import Response
  File "/Users/kevin.wurster/code/notebooks/venv/lib/python3.7/site-packages/planet/api/models.py", line 58
    def get_body_async(self, handler, await=None):
                                          ^
SyntaxError: invalid syntax

In simpler terms:

$ python3
Python 3.7.0 (v3.7.0:1bf9cc5093, Jun 26 2018, 23:26:24) 
[Clang 6.0 (clang-600.0.57)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> await = True
  File "<stdin>", line 1
    await = True
          ^
SyntaxError: invalid syntax

Unfortunately Travis inexplicably does not support Python 3.7 (travis-ci/travis-ci#9815).

[thomasastanley]

Just got a similar error after a conda install today. I assume it's related.

`python
Python 3.7.1 | packaged by conda-forge | (default, Nov 13 2018, 18:33:04)
[GCC 7.3.0] :: Anaconda, Inc. on linux
Type "help", "copyright", "credits" or "license" for more information.

from planet import api
Traceback (most recent call last):
File "", line 1, in
File "/anaconda3/envs/planet/lib/python3.7/site-packages/planet/api/init.py", line 18, in
from .client import (ClientV1)
File "/anaconda3/envs/planet/lib/python3.7/site-packages/planet/api/client.py", line 17, in
from .dispatch import RequestsDispatcher
File "/anaconda3/envs/planet/lib/python3.7/site-packages/planet/api/dispatch.py", line 24, in
from . models import Response
File "/anaconda3/envs/planet/lib/python3.7/site-packages/planet/api/models.py", line 58
def get_body_async(self, handler, await=None):
^
`

[sarasafavi]

@thomasastanley yes, that's the same issue. Good news though, this has recently been fixed. A new release will be pushed out soon with the update, which will allow the conda forge install to complete successfully. In the interim, the fix is available in the latest master branch here.

[bosth]

Fixed with #155