add

tox.ini

@@ -0,0 +1,35 @@
+[tox]
+envlist = py{37,38,39,310,311}
+skipsdist = True
+skip_missing_interpreters = False
+ignore_basepython_conflict = True
+
+[testenv]
+basepython = python3
+sitepackages = True
+setenv =
+    PYTHONPATH = {toxinidir}:{toxinidir}
+deps =
+    pip
+    setuptools
+    wheel
+    aiohttp
+    cryptography
+    requests
+    coincurve
+commands =
+    pip install -e .
+    python ccxt/test/tests_init.py --idTests
+    python ccxt/test/tests_init.py --sync --idTests
+
+[testenv:qa]
+allowlist_externals = ruff
+changedir = {toxinidir}
+commands = ruff ./ccxt/
+deps = .[qa]
+
+[testenv:type]
+allowlist_externals = mypy
+changedir = {toxinidir}
+commands = mypy ./ccxt/
+deps = .[type]