FIX: add explicit exports from main library module (#494)

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> GitHub Issue: #489

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Adds `__all__` to `__init__.py` listing all public symbols currently
imported into the module. This allows to import any already public
object directly from the root module, without worrying about the
internal package structure.

This change also makes the tutorial snippets `mypy`-compliant

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Co-authored-by: Jahnvi Thakkar <61936179+jahnvi480@users.noreply.github.com>

Author: cepedus

mssql_python/__init__.py

@@ -293,6 +293,221 @@ def _cleanup_connections():
     SQL_IC_MIXED,
 )
 
+__all__ = [
+    # Exception classes
+    "Warning",
+    "Error",
+    "InterfaceError",
+    "DatabaseError",
+    "DataError",
+    "OperationalError",
+    "IntegrityError",
+    "InternalError",
+    "ProgrammingError",
+    "NotSupportedError",
+    "ConnectionStringParseError",
+    # Type objects and functions
+    "Date",
+    "Time",
+    "Timestamp",
+    "DateFromTicks",
+    "TimeFromTicks",
+    "TimestampFromTicks",
+    "Binary",
+    "STRING",
+    "BINARY",
+    "NUMBER",
+    "DATETIME",
+    "ROWID",
+    # Connection and cursor classes
+    "connect",
+    "Connection",
+    "Cursor",
+    "Row",
+    # Settings
+    "Settings",
+    "get_settings",
+    # Logging
+    "logger",
+    "setup_logging",
+    "driver_logger",
+    # Decimal functions
+    "setDecimalSeparator",
+    "getDecimalSeparator",
+    # Pooling
+    "pooling",
+    "PoolingManager",
+    # Constants - Enum classes
+    "AuthType",
+    "SQLTypes",
+    "get_info_constants",
+    # SQL Type constants
+    "SQL_CHAR",
+    "SQL_VARCHAR",
+    "SQL_LONGVARCHAR",
+    "SQL_WCHAR",
+    "SQL_WVARCHAR",
+    "SQL_WLONGVARCHAR",
+    "SQL_DECIMAL",
+    "SQL_NUMERIC",
+    "SQL_BIT",
+    "SQL_TINYINT",
+    "SQL_SMALLINT",
+    "SQL_INTEGER",
+    "SQL_BIGINT",
+    "SQL_REAL",
+    "SQL_FLOAT",
+    "SQL_DOUBLE",
+    "SQL_BINARY",
+    "SQL_VARBINARY",
+    "SQL_LONGVARBINARY",
+    "SQL_DATE",
+    "SQL_TIME",
+    "SQL_TIMESTAMP",
+    "SQL_TYPE_DATE",
+    "SQL_TYPE_TIME",
+    "SQL_TYPE_TIMESTAMP",
+    "SQL_GUID",
+    "SQL_XML",
+    # Connection attribute constants
+    "SQL_ATTR_ACCESS_MODE",
+    "SQL_ATTR_CONNECTION_TIMEOUT",
+    "SQL_ATTR_CURRENT_CATALOG",
+    "SQL_ATTR_LOGIN_TIMEOUT",
+    "SQL_ATTR_PACKET_SIZE",
+    "SQL_ATTR_TXN_ISOLATION",
+    # Transaction isolation levels
+    "SQL_TXN_READ_UNCOMMITTED",
+    "SQL_TXN_READ_COMMITTED",
+    "SQL_TXN_REPEATABLE_READ",
+    "SQL_TXN_SERIALIZABLE",
+    # Access modes
+    "SQL_MODE_READ_WRITE",
+    "SQL_MODE_READ_ONLY",
+    # Special constants
+    "SQL_WMETADATA",
+    # GetInfo constants
+    "SQL_DRIVER_NAME",
+    "SQL_DRIVER_VER",
+    "SQL_DRIVER_ODBC_VER",
+    "SQL_DRIVER_HLIB",
+    "SQL_DRIVER_HENV",
+    "SQL_DRIVER_HDBC",
+    "SQL_DATA_SOURCE_NAME",
+    "SQL_DATABASE_NAME",
+    "SQL_SERVER_NAME",
+    "SQL_USER_NAME",
+    "SQL_SQL_CONFORMANCE",
+    "SQL_KEYWORDS",
+    "SQL_IDENTIFIER_CASE",
+    "SQL_IDENTIFIER_QUOTE_CHAR",
+    "SQL_SPECIAL_CHARACTERS",
+    "SQL_SQL92_ENTRY_SQL",
+    "SQL_SQL92_INTERMEDIATE_SQL",
+    "SQL_SQL92_FULL_SQL",
+    "SQL_SUBQUERIES",
+    "SQL_EXPRESSIONS_IN_ORDERBY",
+    "SQL_CORRELATION_NAME",
+    "SQL_SEARCH_PATTERN_ESCAPE",
+    "SQL_CATALOG_TERM",
+    "SQL_CATALOG_NAME_SEPARATOR",
+    "SQL_SCHEMA_TERM",
+    "SQL_TABLE_TERM",
+    "SQL_PROCEDURES",
+    "SQL_ACCESSIBLE_TABLES",
+    "SQL_ACCESSIBLE_PROCEDURES",
+    "SQL_CATALOG_NAME",
+    "SQL_CATALOG_USAGE",
+    "SQL_SCHEMA_USAGE",
+    "SQL_COLUMN_ALIAS",
+    "SQL_DESCRIBE_PARAMETER",
+    "SQL_TXN_CAPABLE",
+    "SQL_TXN_ISOLATION_OPTION",
+    "SQL_DEFAULT_TXN_ISOLATION",
+    "SQL_MULTIPLE_ACTIVE_TXN",
+    "SQL_TXN_ISOLATION_LEVEL",
+    "SQL_NUMERIC_FUNCTIONS",
+    "SQL_STRING_FUNCTIONS",
+    "SQL_DATETIME_FUNCTIONS",
+    "SQL_SYSTEM_FUNCTIONS",
+    "SQL_CONVERT_FUNCTIONS",
+    "SQL_LIKE_ESCAPE_CLAUSE",
+    "SQL_MAX_COLUMN_NAME_LEN",
+    "SQL_MAX_TABLE_NAME_LEN",
+    "SQL_MAX_SCHEMA_NAME_LEN",
+    "SQL_MAX_CATALOG_NAME_LEN",
+    "SQL_MAX_IDENTIFIER_LEN",
+    "SQL_MAX_STATEMENT_LEN",
+    "SQL_MAX_CHAR_LITERAL_LEN",
+    "SQL_MAX_BINARY_LITERAL_LEN",
+    "SQL_MAX_COLUMNS_IN_TABLE",
+    "SQL_MAX_COLUMNS_IN_SELECT",
+    "SQL_MAX_COLUMNS_IN_GROUP_BY",
+    "SQL_MAX_COLUMNS_IN_ORDER_BY",
+    "SQL_MAX_COLUMNS_IN_INDEX",
+    "SQL_MAX_TABLES_IN_SELECT",
+    "SQL_MAX_CONCURRENT_ACTIVITIES",
+    "SQL_MAX_DRIVER_CONNECTIONS",
+    "SQL_MAX_ROW_SIZE",
+    "SQL_MAX_USER_NAME_LEN",
+    "SQL_ACTIVE_CONNECTIONS",
+    "SQL_ACTIVE_STATEMENTS",
+    "SQL_DATA_SOURCE_READ_ONLY",
+    "SQL_NEED_LONG_DATA_LEN",
+    "SQL_GETDATA_EXTENSIONS",
+    "SQL_CURSOR_COMMIT_BEHAVIOR",
+    "SQL_CURSOR_ROLLBACK_BEHAVIOR",
+    "SQL_CURSOR_SENSITIVITY",
+    "SQL_BOOKMARK_PERSISTENCE",
+    "SQL_DYNAMIC_CURSOR_ATTRIBUTES1",
+    "SQL_DYNAMIC_CURSOR_ATTRIBUTES2",
+    "SQL_FORWARD_ONLY_CURSOR_ATTRIBUTES1",
+    "SQL_FORWARD_ONLY_CURSOR_ATTRIBUTES2",
+    "SQL_STATIC_CURSOR_ATTRIBUTES1",
+    "SQL_STATIC_CURSOR_ATTRIBUTES2",
+    "SQL_KEYSET_CURSOR_ATTRIBUTES1",
+    "SQL_KEYSET_CURSOR_ATTRIBUTES2",
+    "SQL_SCROLL_OPTIONS",
+    "SQL_SCROLL_CONCURRENCY",
+    "SQL_FETCH_DIRECTION",
+    "SQL_ROWSET_SIZE",
+    "SQL_CONCURRENCY",
+    "SQL_ROW_NUMBER",
+    "SQL_STATIC_SENSITIVITY",
+    "SQL_BATCH_SUPPORT",
+    "SQL_BATCH_ROW_COUNT",
+    "SQL_PARAM_ARRAY_ROW_COUNTS",
+    "SQL_PARAM_ARRAY_SELECTS",
+    "SQL_PROCEDURE_TERM",
+    "SQL_POSITIONED_STATEMENTS",
+    "SQL_GROUP_BY",
+    "SQL_OJ_CAPABILITIES",
+    "SQL_ORDER_BY_COLUMNS_IN_SELECT",
+    "SQL_OUTER_JOINS",
+    "SQL_QUOTED_IDENTIFIER_CASE",
+    "SQL_CONCAT_NULL_BEHAVIOR",
+    "SQL_NULL_COLLATION",
+    "SQL_ALTER_TABLE",
+    "SQL_UNION",
+    "SQL_DDL_INDEX",
+    "SQL_MULT_RESULT_SETS",
+    "SQL_OWNER_USAGE",
+    "SQL_QUALIFIER_USAGE",
+    "SQL_TIMEDATE_ADD_INTERVALS",
+    "SQL_TIMEDATE_DIFF_INTERVALS",
+    "SQL_IC_UPPER",
+    "SQL_IC_LOWER",
+    "SQL_IC_SENSITIVE",
+    "SQL_IC_MIXED",
+    # API level globals
+    "apilevel",
+    "paramstyle",
+    "threadsafety",
+    # Module properties
+    "lowercase",
+    "native_uuid",
+]
+
 
 def pooling(max_size: int = 100, idle_timeout: int = 600, enabled: bool = True) -> None:
     """