comply with flake8's rules E252, W605

- "E252 missing whitespace around parameter equals"
- "W605 invalid escape sequence '\.'"

These errors will appear after updating 'flake8' (and its dependencies)
from 3.5.0 to 3.7.6.

Author: glarrain

fd_gcp/auth.py

@@ -57,7 +57,7 @@ def get_env_project_id() -> str:
     return project_id
 
 
-def get_gce_credentials(service_account_email: str =None) -> GcpCredentials:
+def get_gce_credentials(service_account_email: str = None) -> GcpCredentials:
     """
     Return credentials provided by Compute Engine service account.
 

fd_gcp/exceptions.py

@@ -42,7 +42,7 @@ class ResourcePermissionDenied(Error):
 
     """
 
-    def __init__(self, resource: str =None, permission: str =None) -> None:
+    def __init__(self, resource: str = None, permission: str = None) -> None:
         """Constructor.
 
         :param resource: a resource's ID, GRN or some other identifier
@@ -76,7 +76,7 @@ class ResourceNotFound(Error):
 
     """
 
-    def __init__(self, resource: str =None) -> None:
+    def __init__(self, resource: str = None) -> None:
         """Constructor.
 
         :param resource: a resource's ID, GRN or some other identifier
@@ -192,7 +192,7 @@ def _detect_resource_not_found(
 
     try:
         exc_reason = exc._get_reason().strip()
-        re_pattern = re.compile("^(?P<resource_type>[a-zA-Z0-9_]+) (?P<resource>.+) not found\.")
+        re_pattern = re.compile(r"^(?P<resource_type>[a-zA-Z0-9_]+) (?P<resource>.+) not found\.")
         re_match = re_pattern.match(exc_reason)
 
         if re_match:

fd_gcp/gcp_kms.py

@@ -234,7 +234,7 @@ def create_key_ring(
 def create_crypto_key(
     api_client: GcpResource,
     key_ring_grn: str,
-    crypto_key_id: str =None,
+    crypto_key_id: str = None,
 ) -> str:
     """
     Create a crypto key within a key ring.

fd_gcp/gcp_kms_mock.py

@@ -34,7 +34,7 @@
 def create_crypto_key(
     api_client: object,
     key_ring_grn: str,
-    crypto_key_id: str =None,
+    crypto_key_id: str = None,
 ) -> str:
     """
     Create a crypto key (mock) within a key ring.