add

qa.py

@@ -0,0 +1,17 @@
+import os
+import sys
+
+if len(sys.argv) > 1:
+    flak8_args = sys.argv[1:]
+    command = 'flake8 --ignore=F722,F841,F821,W504,E402,E501,E275,E902 ' + 'ccxt/' + ' ccxt/'.join(flak8_args)
+    print(f'\n{command}\n')
+    os.system(command)
+    exit()
+
+if os.name == 'posix':
+    code = os.WEXITSTATUS(os.system('./fastflake.sh'))
+    exit(code)
+else:
+    command = 'flake8 --ignore=F722,F841,F821,W504,E402,E501,E275,E902 --exclude static_dependencies,node_modules,.tox,build'
+    print(f'\n{command}\n')
+    os.system(command)