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"""Core functionality from extension module."""
try:
from ._pg import version
except ImportError as e: # noqa: F841
import os
libpq = 'libpq.'
if os.name == 'nt':
libpq += 'dll'
import sys
paths = [path for path in os.environ["PATH"].split(os.pathsep)
if os.path.exists(os.path.join(path, libpq))]
if sys.version_info >= (3, 8):
# see https://docs.python.org/3/whatsnew/3.8.html#ctypes
add_dll_dir = os.add_dll_directory # type: ignore
for path in paths:
with add_dll_dir(os.path.abspath(path)):
try:
from ._pg import version
except ImportError:
pass
else:
del version
e = None # type: ignore
break
if paths:
libpq = 'compatible ' + libpq
else:
libpq += 'so'
if e:
raise ImportError(
"Cannot import shared library for PyGreSQL,\n"
f"probably because no {libpq} is installed.\n{e}") from e
else:
del version
# import objects from extension module
from ._pg import (
INV_READ,
INV_WRITE,
POLLING_FAILED,
POLLING_OK,
POLLING_READING,
POLLING_WRITING,
RESULT_DDL,
RESULT_DML,
RESULT_DQL,
RESULT_EMPTY,
SEEK_CUR,
SEEK_END,
SEEK_SET,
TRANS_ACTIVE,
TRANS_IDLE,
TRANS_INERROR,
TRANS_INTRANS,
TRANS_UNKNOWN,
Connection,
DatabaseError,
DataError,
Error,
IntegrityError,
InterfaceError,
InternalError,
InvalidResultError,
LargeObject,
MultipleResultsError,
NoResultError,
NotSupportedError,
OperationalError,
ProgrammingError,
Query,
Warning,
cast_array,
cast_hstore,
cast_record,
connect,
escape_bytea,
escape_string,
get_array,
get_bool,
get_bytea_escaped,
get_datestyle,
get_decimal,
get_decimal_point,
get_defbase,
get_defhost,
get_defopt,
get_defport,
get_defuser,
get_jsondecode,
get_pqlib_version,
set_array,
set_bool,
set_bytea_escaped,
set_datestyle,
set_decimal,
set_decimal_point,
set_defbase,
set_defhost,
set_defopt,
set_defpasswd,
set_defport,
set_defuser,
set_jsondecode,
set_query_helpers,
unescape_bytea,
version,
)
__all__ = [
'INV_READ',
'INV_WRITE',
'POLLING_FAILED',
'POLLING_OK',
'POLLING_READING',
'POLLING_WRITING',
'RESULT_DDL',
'RESULT_DML',
'RESULT_DQL',
'RESULT_EMPTY',
'SEEK_CUR',
'SEEK_END',
'SEEK_SET',
'TRANS_ACTIVE',
'TRANS_IDLE',
'TRANS_INERROR',
'TRANS_INTRANS',
'TRANS_UNKNOWN',
'Connection',
'DataError',
'DatabaseError',
'Error',
'IntegrityError',
'InterfaceError',
'InternalError',
'InvalidResultError',
'LargeObject',
'MultipleResultsError',
'NoResultError',
'NotSupportedError',
'OperationalError',
'ProgrammingError',
'Query',
'Warning',
'cast_array',
'cast_hstore',
'cast_record',
'connect',
'escape_bytea',
'escape_string',
'get_array',
'get_bool',
'get_bytea_escaped',
'get_datestyle',
'get_decimal',
'get_decimal_point',
'get_defbase',
'get_defhost',
'get_defopt',
'get_defport',
'get_defuser',
'get_jsondecode',
'get_pqlib_version',
'set_array',
'set_bool',
'set_bytea_escaped',
'set_datestyle',
'set_decimal',
'set_decimal_point',
'set_defbase',
'set_defhost',
'set_defopt',
'set_defpasswd',
'set_defport',
'set_defuser',
'set_jsondecode',
'set_query_helpers',
'unescape_bytea',
'version',
]
|
