Fixed possible bugs and renamed pytz imports

modules/utils.py

@@ -1,8 +1,7 @@
 from datetime import datetime
 from typing import Union
 
-from pytz import UTC
-from pytz import timezone as pytz_timezone
+import pytz
 
 
 def to_utc(date: datetime, timezone: Union[str, None] = None) -> datetime:
@@ -18,7 +17,9 @@ def to_utc(date: datetime, timezone: Union[str, None] = None) -> datetime:
         * `datetime`: Timezone unaware datetime in UTC with timezone's offset applied to it.
     """
     timezone = "UTC" if timezone is None else timezone
-    return pytz_timezone(timezone).localize(date).astimezone(UTC).replace(tzinfo=None)
+    return (
+        pytz.timezone(timezone).localize(date).astimezone(pytz.utc).replace(tzinfo=None)
+    )
 
 
 def from_utc(date: datetime, timezone: Union[str, None] = None) -> datetime:
@@ -35,8 +36,5 @@ def from_utc(date: datetime, timezone: Union[str, None] = None) -> datetime:
     """
     timezone = "UTC" if timezone is None else timezone
     return (
-        pytz_timezone("UTC")
-        .localize(date)
-        .astimezone(pytz_timezone(timezone))
-        .replace(tzinfo=None)
+        pytz.utc.localize(date).astimezone(pytz.timezone(timezone)).replace(tzinfo=None)
     )