Update drop() method docstring to clarify quote handling

- Document that column names are case-sensitive and don't require quotes
- Clarify that both quoted and unquoted column names are accepted
- Add examples showing both 'col' and 'col' syntax work
- Note difference from select() operation behavior

Author: H0TB0X420

python/datafusion/dataframe.py

@@ -409,11 +409,20 @@ def select(self, *exprs: Expr | str) -> DataFrame:
     def drop(self, *columns: str) -> DataFrame:
         """Drop arbitrary amount of columns.
 
+        Column names are case-sensitive and do not require double quotes like 
+        other operations such as `select`. Leading and trailing double quotes 
+        are allowed and will be automatically stripped if present.
+
         Args:
-            columns: Column names to drop from the dataframe.
+            columns: Column names to drop from the dataframe. Both 'column_name' 
+                    and '"column_name"' are accepted.
 
         Returns:
             DataFrame with those columns removed in the projection.
+            
+        Example Usage:
+            df.drop('ID_For_Students')      # Works
+            df.drop('"ID_For_Students"')    # Also works (quotes stripped)
         """
         normalized_columns = []
         for col in columns: