Flake8: Change error codes for flake8 to ignore(#2230)

Author: RishabhJain2018

.flake8

@@ -1,5 +1,5 @@
 [flake8]
-ignore = E203, E266, E501, W503, F403, F401, F405, C901, F601
+ignore = E501, F403, C901, F601, W503
 max-line-length = 79
 max-complexity = 18
 select = B,C,E,F,W,T4,B9

settings/dev.py

@@ -13,13 +13,13 @@
     "default": {
         "ENGINE": "django.db.backends.postgresql_psycopg2",
         "NAME": os.environ.get("POSTGRES_NAME", "evalai"),  # noqa: ignore=F405
-        "USER": os.environ.get(
+        "USER": os.environ.get(  # noqa: ignore=F405
             "POSTGRES_USER", "postgres"
         ),  # noqa: ignore=F405
-        "PASSWORD": os.environ.get(
+        "PASSWORD": os.environ.get(  # noqa: ignore=F405
             "POSTGRES_PASSWORD", "postgres"
         ),  # noqa: ignore=F405
-        "HOST": os.environ.get(
+        "HOST": os.environ.get(  # noqa: ignore=F405
             "POSTGRES_HOST", "localhost"
         ),  # noqa: ignore=F405
         "PORT": os.environ.get("POSTGRES_PORT", 5432),  # noqa: ignore=F405

settings/prod.py

@@ -76,7 +76,7 @@
 REST_FRAMEWORK_DOCS = {"HIDE_DOCS": True}
 
 # Port number for the python-memcached cache backend.
-CACHES["default"]["LOCATION"] = os.environ.get(
+CACHES["default"]["LOCATION"] = os.environ.get(  # noqa: ignore=F405
     "MEMCACHED_LOCATION"
 )  # noqa: ignore=F405
 

settings/test.py

@@ -6,13 +6,13 @@
     "default": {
         "ENGINE": "django.db.backends.postgresql_psycopg2",
         "NAME": os.environ.get("POSTGRES_NAME", "evalai"),  # noqa: ignore=F405
-        "USER": os.environ.get(
+        "USER": os.environ.get(  # noqa: ignore=F405
             "POSTGRES_USER", "postgres"
         ),  # noqa: ignore=F405
-        "PASSWORD": os.environ.get(
+        "PASSWORD": os.environ.get(  # noqa: ignore=F405
             "POSTGRES_PASSWORD", "postgres"
         ),  # noqa: ignore=F405
-        "HOST": os.environ.get(
+        "HOST": os.environ.get(  # noqa: ignore=F405
             "POSTGRES_HOST", "localhost"
         ),  # noqa: ignore=F405
         "PORT": os.environ.get("POSTGRES_PORT", 5432),  # noqa: ignore=F405