Py3.8 + concurrency fixes for transactions

Author: grigi

src/requirements.txt

@@ -7,10 +7,10 @@
 aiosqlite==0.10.0         # via tortoise-orm
 certifi==2019.9.11        # via requests
 chardet==3.0.4            # via requests
-ciso8601==2.1.1           # via tortoise-orm
+ciso8601==2.1.2           # via tortoise-orm
 colorama==0.4.1           # via vmprof
 django-jsonfield==1.3.1
-django==2.2.6
+django==2.2.7
 filelock==3.0.12          # via tox
 formencode==1.3.1         # via sqlobject
 idna==2.8                 # via requests
@@ -19,23 +19,24 @@ more-itertools==7.2.0     # via zipp
 packaging==19.2           # via tox
 peewee==3.11.2
 pluggy==0.13.0            # via tox
-pony==0.7.10
+pony==0.7.11
 py==1.8.0                 # via tox
 pydispatcher==2.0.5       # via sqlobject
-pyparsing==2.4.2          # via packaging
-pypika==0.35.8            # via tortoise-orm
+pyparsing==2.4.3          # via packaging
+pypika==0.35.15           # via tortoise-orm
 python-rapidjson==0.8.0
 pytz==2019.3              # via django, vmprof
 requests==2.22.0          # via vmprof
-six==1.12.0               # via packaging, tox, vmprof
+six==1.13.0               # via packaging, tox, vmprof
 sqlalchemy==1.3.10
 sqlobject==3.7.3
 sqlparse==0.3.0           # via django
 toml==0.10.0              # via tox
-tortoise-orm==0.13.12
+tortoise-orm==0.14.0
 tox==3.14.0
+typing-extensions==3.7.4.1  # via tortoise-orm
 urllib3==1.25.6           # via requests
-uvloop==0.13.0
-virtualenv==16.7.5        # via tox
+uvloop==0.14.0
+virtualenv==16.7.7        # via tox
 vmprof==0.4.15
 zipp==0.6.0               # via importlib-metadata

src/tortoise/test_b.py

@@ -8,7 +8,7 @@
 from tortoise.transactions import in_transaction
 
 LEVEL_CHOICE = [10, 20, 30, 40, 50]
-concurrents = 1  # int(os.environ.get('CONCURRENTS', '1'))
+concurrents = int(os.environ.get('CONCURRENTS', '1'))
 count = int(os.environ.get('ITERATIONS', '1000'))
 count = int(count // concurrents) * concurrents
 

src/tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py{37},pypy3
+envlist = py{37,38},pypy3
 skip_missing_interpreters = True
 
 [testenv]