refactor: change methods not using its bound instance to staticmethods

The method doesn't use its bound instance. Decorate this method with `@staticmethod` decorator, so that Python does not have to instantiate a bound method for every instance of this class thereby saving memory and computation. Read more about staticmethods [here](https://docs.python.org/3/library/functions.html#staticmethod).

2 files changed, 6 insertions, 3 deletions

diff --git a/gdpr_obfuscator/read.py b/gdpr_obfuscator/read.py
index e527a4f..27f2a3d 100644
--- a/gdpr_obfuscator/read.py
+++ b/gdpr_obfuscator/read.py
@@ -37,7 +37,8 @@ class DataReader:
         read_csv_content = self.read_string(content)
         return read_csv_content
 
-    def read_string(self, content: str) -> List[Dict[str, str]]:
+    @staticmethod
+    def read_string(content: str) -> List[Dict[str, str]]:
         """
         A method to read CSV data from a string and return the data as a list
         of dictionaries.
diff --git a/gdpr_obfuscator/utils.py b/gdpr_obfuscator/utils.py
index d305daf..9736d7c 100644
--- a/gdpr_obfuscator/utils.py
+++ b/gdpr_obfuscator/utils.py
@@ -8,13 +8,15 @@ class Utilities:
     def __init__(self, logger=None):
         pass
 
-    def get_s3_path(self, uri):
+    @staticmethod
+    def get_s3_path(uri):
         parts = uri.replace("s3://", "").split("/")
         bucket = parts.pop(0)
         key = "/".join(parts)
         return bucket, key
 
-    def create_byte_stream(self, data: List[Dict[str, str]]) -> bytes:
+    @staticmethod
+    def create_byte_stream(data: List[Dict[str, str]]) -> bytes:
         if not data:
             return b""