[+] use timezone for timestamp

deps/test-task-2025-06-30-v1/python/online/fxreader/pr34/test_task_2025_06_30_v1/tickers/alembic/versions/729afc7194c9_add_timezone.py

@@ -0,0 +1,38 @@
+"""add timezone
+
+Revision ID: 729afc7194c9
+Revises: eb63f793db3a
+Create Date: 2025-07-11 11:30:06.246152
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import postgresql
+
+# revision identifiers, used by Alembic.
+revision: str = '729afc7194c9'
+down_revision: Union[str, Sequence[str], None] = 'eb63f793db3a'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    """Upgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.alter_column('tickers_ticker', 'timestamp',
+               existing_type=postgresql.TIMESTAMP(),
+               type_=sa.DateTime(timezone=True),
+               existing_nullable=False)
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.alter_column('tickers_ticker', 'timestamp',
+               existing_type=sa.DateTime(timezone=True),
+               type_=postgresql.TIMESTAMP(),
+               existing_nullable=False)
+    # ### end Alembic commands ###

deps/test-task-2025-06-30-v1/python/online/fxreader/pr34/test_task_2025_06_30_v1/tickers/models.py

@@ -10,6 +10,7 @@ from sqlalchemy import (
 	String,
 	ForeignKey,
 	Numeric,
+	DateTime,
 	UniqueConstraint,
 )
 
@@ -34,7 +35,9 @@ class Ticker(Base):
 		'tickers_market.id',
 		ondelete='CASCADE',
 	))
-	timestamp: Mapped[datetime.datetime] = mapped_column()
+	timestamp: Mapped[datetime.datetime] = mapped_column(
+		DateTime(timezone=True,)
+	)
 	value: Mapped[decimal.Decimal] = mapped_column(Numeric(
 		precision=32, scale=6,
 	))

deps/test-task-2025-06-30-v1/python/online/fxreader/pr34/test_task_2025_06_30_v1/tickers_retrieval/emcont.py

@@ -3,6 +3,7 @@ import asyncio
 import decimal
 import logging
 import datetime
+# import datetime.timezone
 import pydantic
 import json
 
@@ -96,7 +97,9 @@ class Emcont:
 		store_timeout: float | int = 0.5,
 		request_period: float | int = 1,
 	) -> None:
-		last_retrieval = datetime.datetime.now()
+		last_retrieval = datetime.datetime.now(
+			tz=datetime.timezone.utc,
+		)
 
 		assert request_timeout >= 0
 		assert store_timeout >= 0
@@ -138,7 +141,9 @@ class Emcont:
 				nonlocal next_retrieval
 
 				return (
-					next_retrieval - datetime.datetime.now()
+					next_retrieval - datetime.datetime.now(
+						tz=datetime.timezone.utc,
+					)
 				).total_seconds()
 
 			while True: