refactor: converted class in TokenNftInfo to dataclass (#451)

* refactor: converted class in TokenNftInfo to dataclass

Signed-off-by: Gargi Gupta <[email protected]>

* Updated changelog for TokenNFTInfo dataclass refactor

Signed-off-by: Gargi Gupta <[email protected]>

* fix: addressed review feedback

Signed-off-by: Gargi Gupta <[email protected]>

---------

Signed-off-by: Gargi Gupta <[email protected]>

Author: gg21-prog

CHANGELOG.md

@@ -40,6 +40,7 @@ This changelog is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.
 - Refactored `examples/account_create.py` to improve modularity and readability (#363)
 - Replace Hendrik Ebbers with Sophie Bulloch in the MAINTAINERS.md file
 - Improved `CONTRIBUTING.md` by explaining the /docs folder structure and fixing broken hyperlinks.(#431)
+- Converted class in `token_nft_info.py` to dataclass for simplicity.
 
 
 ### Fixed

src/hiero_sdk_python/tokens/token_nft_info.py

@@ -1,3 +1,4 @@
+from dataclasses import dataclass
 """
 hiero_sdk_python.tokens.token_nft_info.py
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -10,37 +11,26 @@
 from hiero_sdk_python.tokens.nft_id import NftId
 from hiero_sdk_python.hapi.services import timestamp_pb2, token_get_nft_info_pb2
 
+@dataclass
 class TokenNftInfo:
     """
     Represents information about a Non-Fungible Token (NFT) on the Hedera network.
     
-    This class encapsulates details about an NFT including its unique identifier,
+    This dataclass encapsulates details about an NFT including its unique identifier,
     owner account, creation time, associated metadata, and any account with spending privileges.
-    """
 
-    def __init__(
-        self,
-        nft_id: Optional[NftId] = None,
-        account_id: Optional[AccountId] = None,
-        creation_time: Optional[int] = None,
-        metadata: Optional[bytes] = None,
-        spender_id: Optional[AccountId] = None
-    ) -> None:
-        """
-        Initialize a TokenNftInfo instance.
-        
-        Args:
-            nft_id (NftId, optional): The unique identifier of the NFT.
-            account_id (AccountId, optional): The account ID of the NFT owner.
-            creation_time (int, optional): The timestamp when the NFT was created (in seconds).
-            metadata (bytes, optional): The metadata associated with the NFT.
-            spender_id (AccountId, optional): The account ID with spending privileges for this NFT.
-        """
-        self.nft_id: Optional[NftId] = nft_id
-        self.account_id: Optional[AccountId] = account_id
-        self.creation_time: Optional[int] = creation_time
-        self.metadata: Optional[bytes] = metadata
-        self.spender_id: Optional[AccountId] = spender_id
+    Args:
+        nft_id (NftId, optional): The unique identifier of the NFT.
+        account_id (AccountId, optional): The account ID of the NFT owner.
+        creation_time (int, optional): The timestamp when the NFT was created (in seconds).
+        metadata (bytes, optional): The metadata associated with the NFT.
+        spender_id (AccountId, optional): The account ID with spending privileges for this NFT
+    """
+    nft_id: Optional[NftId] = None 
+    account_id: Optional[AccountId] = None 
+    creation_time: Optional[int] = None 
+    metadata: Optional[bytes] = None 
+    spender_id: Optional[AccountId] = None 
 
     @classmethod
     def _from_proto(cls, proto: token_get_nft_info_pb2.TokenNftInfo) -> "TokenNftInfo":
@@ -90,3 +80,4 @@ def __str__(self) -> str:
                 f"creation_time={self.creation_time}, "
                 f"metadata={self.metadata!r}, "
                 f"spender_id={self.spender_id})")
+