def _validate_query_state(self):
for attr, methname, notset, op in (
('_limit', 'limit()', None, operator.is_),
('_offset', 'offset()', None, operator.is_),
('_order_by', 'order_by()', False, operator.is_),
('_group_by', 'group_by()', False, operator.is_),
('_distinct', 'distinct()', False, operator.is_),
(
'_from_obj',
'join(), outerjoin(), select_from(), or from_self()',
(), operator.eq)
):
if not op(getattr(self.query, attr), notset):
raise sa_exc.InvalidRequestError(
"Can't call Query.update() or Query.delete() "
"when %s has been called" %
(methname, )
)
python类is_()的实例源码
def _validate_query_state(self):
for attr, methname, notset, op in (
('_limit', 'limit()', None, operator.is_),
('_offset', 'offset()', None, operator.is_),
('_order_by', 'order_by()', False, operator.is_),
('_group_by', 'group_by()', False, operator.is_),
('_distinct', 'distinct()', False, operator.is_),
(
'_from_obj',
'join(), outerjoin(), select_from(), or from_self()',
(), operator.eq)
):
if not op(getattr(self.query, attr), notset):
raise sa_exc.InvalidRequestError(
"Can't call Query.update() or Query.delete() "
"when %s has been called" %
(methname, )
)
def _validate_query_state(self):
for attr, methname, notset, op in (
('_limit', 'limit()', None, operator.is_),
('_offset', 'offset()', None, operator.is_),
('_order_by', 'order_by()', False, operator.is_),
('_group_by', 'group_by()', False, operator.is_),
('_distinct', 'distinct()', False, operator.is_),
(
'_from_obj',
'join(), outerjoin(), select_from(), or from_self()',
(), operator.eq)
):
if not op(getattr(self.query, attr), notset):
raise sa_exc.InvalidRequestError(
"Can't call Query.update() or Query.delete() "
"when %s has been called" %
(methname, )
)
def _validate_query_state(self):
for attr, methname, notset, op in (
('_limit', 'limit()', None, operator.is_),
('_offset', 'offset()', None, operator.is_),
('_order_by', 'order_by()', False, operator.is_),
('_group_by', 'group_by()', False, operator.is_),
('_distinct', 'distinct()', False, operator.is_),
(
'_from_obj',
'join(), outerjoin(), select_from(), or from_self()',
(), operator.eq)
):
if not op(getattr(self.query, attr), notset):
raise sa_exc.InvalidRequestError(
"Can't call Query.update() or Query.delete() "
"when %s has been called" %
(methname, )
)
def _validate_query_state(self):
for attr, methname, notset, op in (
('_limit', 'limit()', None, operator.is_),
('_offset', 'offset()', None, operator.is_),
('_order_by', 'order_by()', False, operator.is_),
('_group_by', 'group_by()', False, operator.is_),
('_distinct', 'distinct()', False, operator.is_),
(
'_from_obj',
'join(), outerjoin(), select_from(), or from_self()',
(), operator.eq)
):
if not op(getattr(self.query, attr), notset):
raise sa_exc.InvalidRequestError(
"Can't call Query.update() or Query.delete() "
"when %s has been called" %
(methname, )
)
def test_operator(self):
import operator
self.assertIs(operator.truth(0), False)
self.assertIs(operator.truth(1), True)
with test_support.check_py3k_warnings():
self.assertIs(operator.isCallable(0), False)
self.assertIs(operator.isCallable(len), True)
self.assertIs(operator.isNumberType(None), False)
self.assertIs(operator.isNumberType(0), True)
self.assertIs(operator.not_(1), False)
self.assertIs(operator.not_(0), True)
self.assertIs(operator.isSequenceType(0), False)
self.assertIs(operator.isSequenceType([]), True)
self.assertIs(operator.contains([], 1), False)
self.assertIs(operator.contains([1], 1), True)
self.assertIs(operator.isMappingType(1), False)
self.assertIs(operator.isMappingType({}), True)
self.assertIs(operator.lt(0, 0), False)
self.assertIs(operator.lt(0, 1), True)
self.assertIs(operator.is_(True, True), True)
self.assertIs(operator.is_(True, False), False)
self.assertIs(operator.is_not(True, True), False)
self.assertIs(operator.is_not(True, False), True)
def test_operator(self):
import operator
self.assertIs(operator.truth(0), False)
self.assertIs(operator.truth(1), True)
with test_support.check_py3k_warnings():
self.assertIs(operator.isCallable(0), False)
self.assertIs(operator.isCallable(len), True)
self.assertIs(operator.isNumberType(None), False)
self.assertIs(operator.isNumberType(0), True)
self.assertIs(operator.not_(1), False)
self.assertIs(operator.not_(0), True)
self.assertIs(operator.isSequenceType(0), False)
self.assertIs(operator.isSequenceType([]), True)
self.assertIs(operator.contains([], 1), False)
self.assertIs(operator.contains([1], 1), True)
self.assertIs(operator.isMappingType(1), False)
self.assertIs(operator.isMappingType({}), True)
self.assertIs(operator.lt(0, 0), False)
self.assertIs(operator.lt(0, 1), True)
self.assertIs(operator.is_(True, True), True)
self.assertIs(operator.is_(True, False), False)
self.assertIs(operator.is_not(True, True), False)
self.assertIs(operator.is_not(True, False), True)
def number_of_args(fn):
"""Return the number of positional arguments for a function, or None if the number is variable.
Looks inside any decorated functions."""
try:
if hasattr(fn, '__wrapped__'):
return number_of_args(fn.__wrapped__)
if any(p.kind == p.VAR_POSITIONAL for p in signature(fn).parameters.values()):
return None
else:
return sum(p.kind in (p.POSITIONAL_ONLY, p.POSITIONAL_OR_KEYWORD) for p in signature(fn).parameters.values())
except ValueError:
# signatures don't work for built-in operators, so check for a few explicitly
UNARY_OPS = [len, op.not_, op.truth, op.abs, op.index, op.inv, op.invert, op.neg, op.pos]
BINARY_OPS = [op.lt, op.le, op.gt, op.ge, op.eq, op.ne, op.is_, op.is_not, op.add, op.and_, op.floordiv, op.lshift, op.mod, op.mul, op.or_, op.pow, op.rshift, op.sub, op.truediv, op.xor, op.concat, op.contains, op.countOf, op.delitem, op.getitem, op.indexOf]
TERNARY_OPS = [op.setitem]
if fn in UNARY_OPS:
return 1
elif fn in BINARY_OPS:
return 2
elif fn in TERNARY_OPS:
return 3
else:
raise NotImplementedError("Bult-in operator {} not supported".format(fn))
def _validate_query_state(self):
for attr, methname, notset, op in (
('_limit', 'limit()', None, operator.is_),
('_offset', 'offset()', None, operator.is_),
('_order_by', 'order_by()', False, operator.is_),
('_group_by', 'group_by()', False, operator.is_),
('_distinct', 'distinct()', False, operator.is_),
(
'_from_obj',
'join(), outerjoin(), select_from(), or from_self()',
(), operator.eq)
):
if not op(getattr(self.query, attr), notset):
raise sa_exc.InvalidRequestError(
"Can't call Query.update() or Query.delete() "
"when %s has been called" %
(methname, )
)
def _validate_query_state(self):
for attr, methname, notset, op in (
('_limit', 'limit()', None, operator.is_),
('_offset', 'offset()', None, operator.is_),
('_order_by', 'order_by()', False, operator.is_),
('_group_by', 'group_by()', False, operator.is_),
('_distinct', 'distinct()', False, operator.is_),
(
'_from_obj',
'join(), outerjoin(), select_from(), or from_self()',
(), operator.eq)
):
if not op(getattr(self.query, attr), notset):
raise sa_exc.InvalidRequestError(
"Can't call Query.update() or Query.delete() "
"when %s has been called" %
(methname, )
)
def _validate_query_state(self):
for attr, methname, notset, op in (
('_limit', 'limit()', None, operator.is_),
('_offset', 'offset()', None, operator.is_),
('_order_by', 'order_by()', False, operator.is_),
('_group_by', 'group_by()', False, operator.is_),
('_distinct', 'distinct()', False, operator.is_),
(
'_from_obj',
'join(), outerjoin(), select_from(), or from_self()',
(), operator.eq)
):
if not op(getattr(self.query, attr), notset):
raise sa_exc.InvalidRequestError(
"Can't call Query.update() or Query.delete() "
"when %s has been called" %
(methname, )
)
def _validate_query_state(self):
for attr, methname, notset, op in (
('_limit', 'limit()', None, operator.is_),
('_offset', 'offset()', None, operator.is_),
('_order_by', 'order_by()', False, operator.is_),
('_group_by', 'group_by()', False, operator.is_),
('_distinct', 'distinct()', False, operator.is_),
(
'_from_obj',
'join(), outerjoin(), select_from(), or from_self()',
(), operator.eq)
):
if not op(getattr(self.query, attr), notset):
raise sa_exc.InvalidRequestError(
"Can't call Query.update() or Query.delete() "
"when %s has been called" %
(methname, )
)
def _validate_query_state(self):
for attr, methname, notset, op in (
('_limit', 'limit()', None, operator.is_),
('_offset', 'offset()', None, operator.is_),
('_order_by', 'order_by()', False, operator.is_),
('_group_by', 'group_by()', False, operator.is_),
('_distinct', 'distinct()', False, operator.is_),
(
'_from_obj',
'join(), outerjoin(), select_from(), or from_self()',
(), operator.eq)
):
if not op(getattr(self.query, attr), notset):
raise sa_exc.InvalidRequestError(
"Can't call Query.update() or Query.delete() "
"when %s has been called" %
(methname, )
)
def test_operator(self):
import operator
self.assertIs(operator.truth(0), False)
self.assertIs(operator.truth(1), True)
with test_support.check_py3k_warnings():
self.assertIs(operator.isCallable(0), False)
self.assertIs(operator.isCallable(len), True)
self.assertIs(operator.isNumberType(None), False)
self.assertIs(operator.isNumberType(0), True)
self.assertIs(operator.not_(1), False)
self.assertIs(operator.not_(0), True)
self.assertIs(operator.isSequenceType(0), False)
self.assertIs(operator.isSequenceType([]), True)
self.assertIs(operator.contains([], 1), False)
self.assertIs(operator.contains([1], 1), True)
self.assertIs(operator.isMappingType(1), False)
self.assertIs(operator.isMappingType({}), True)
self.assertIs(operator.lt(0, 0), False)
self.assertIs(operator.lt(0, 1), True)
self.assertIs(operator.is_(True, True), True)
self.assertIs(operator.is_(True, False), False)
self.assertIs(operator.is_not(True, True), False)
self.assertIs(operator.is_not(True, False), True)
def test_operator(self):
import operator
self.assertIs(operator.truth(0), False)
self.assertIs(operator.truth(1), True)
with test_support.check_py3k_warnings():
self.assertIs(operator.isCallable(0), False)
self.assertIs(operator.isCallable(len), True)
self.assertIs(operator.isNumberType(None), False)
self.assertIs(operator.isNumberType(0), True)
self.assertIs(operator.not_(1), False)
self.assertIs(operator.not_(0), True)
self.assertIs(operator.isSequenceType(0), False)
self.assertIs(operator.isSequenceType([]), True)
self.assertIs(operator.contains([], 1), False)
self.assertIs(operator.contains([1], 1), True)
self.assertIs(operator.isMappingType(1), False)
self.assertIs(operator.isMappingType({}), True)
self.assertIs(operator.lt(0, 0), False)
self.assertIs(operator.lt(0, 1), True)
self.assertIs(operator.is_(True, True), True)
self.assertIs(operator.is_(True, False), False)
self.assertIs(operator.is_not(True, True), False)
self.assertIs(operator.is_not(True, False), True)
def _validate_query_state(self):
for attr, methname, notset, op in (
('_limit', 'limit()', None, operator.is_),
('_offset', 'offset()', None, operator.is_),
('_order_by', 'order_by()', False, operator.is_),
('_group_by', 'group_by()', False, operator.is_),
('_distinct', 'distinct()', False, operator.is_),
(
'_from_obj',
'join(), outerjoin(), select_from(), or from_self()',
(), operator.eq)
):
if not op(getattr(self.query, attr), notset):
raise sa_exc.InvalidRequestError(
"Can't call Query.update() or Query.delete() "
"when %s has been called" %
(methname, )
)
def _validate_query_state(self):
for attr, methname, notset, op in (
('_limit', 'limit()', None, operator.is_),
('_offset', 'offset()', None, operator.is_),
('_order_by', 'order_by()', False, operator.is_),
('_group_by', 'group_by()', False, operator.is_),
('_distinct', 'distinct()', False, operator.is_),
(
'_from_obj',
'join(), outerjoin(), select_from(), or from_self()',
(), operator.eq)
):
if not op(getattr(self.query, attr), notset):
raise sa_exc.InvalidRequestError(
"Can't call Query.update() or Query.delete() "
"when %s has been called" %
(methname, )
)
def _validate_query_state(self):
for attr, methname, notset, op in (
('_limit', 'limit()', None, operator.is_),
('_offset', 'offset()', None, operator.is_),
('_order_by', 'order_by()', False, operator.is_),
('_group_by', 'group_by()', False, operator.is_),
('_distinct', 'distinct()', False, operator.is_),
(
'_from_obj',
'join(), outerjoin(), select_from(), or from_self()',
(), operator.eq)
):
if not op(getattr(self.query, attr), notset):
raise sa_exc.InvalidRequestError(
"Can't call Query.update() or Query.delete() "
"when %s has been called" %
(methname, )
)
def _validate_query_state(self):
for attr, methname, notset, op in (
('_limit', 'limit()', None, operator.is_),
('_offset', 'offset()', None, operator.is_),
('_order_by', 'order_by()', False, operator.is_),
('_group_by', 'group_by()', False, operator.is_),
('_distinct', 'distinct()', False, operator.is_),
(
'_from_obj',
'join(), outerjoin(), select_from(), or from_self()',
(), operator.eq)
):
if not op(getattr(self.query, attr), notset):
raise sa_exc.InvalidRequestError(
"Can't call Query.update() or Query.delete() "
"when %s has been called" %
(methname, )
)
def _validate_query_state(self):
for attr, methname, notset, op in (
('_limit', 'limit()', None, operator.is_),
('_offset', 'offset()', None, operator.is_),
('_order_by', 'order_by()', False, operator.is_),
('_group_by', 'group_by()', False, operator.is_),
('_distinct', 'distinct()', False, operator.is_),
(
'_from_obj',
'join(), outerjoin(), select_from(), or from_self()',
(), operator.eq)
):
if not op(getattr(self.query, attr), notset):
raise sa_exc.InvalidRequestError(
"Can't call Query.update() or Query.delete() "
"when %s has been called" %
(methname, )
)
def add_globals(self):
"Add some Scheme standard procedures."
import math, cmath, operator as op
from functools import reduce
self.update(vars(math))
self.update(vars(cmath))
self.update({
'+':op.add, '-':op.sub, '*':op.mul, '/':op.itruediv, 'níl':op.not_, 'agus':op.and_,
'>':op.gt, '<':op.lt, '>=':op.ge, '<=':op.le, '=':op.eq, 'mod':op.mod,
'frmh':cmath.sqrt, 'dearbhluach':abs, 'uas':max, 'íos':min,
'cothrom_le?':op.eq, 'ionann?':op.is_, 'fad':len, 'cons':cons,
'ceann':lambda x:x[0], 'tóin':lambda x:x[1:], 'iarcheangail':op.add,
'liosta':lambda *x:list(x), 'liosta?': lambda x:isa(x,list),
'folamh?':lambda x: x == [], 'adamh?':lambda x: not((isa(x, list)) or (x == None)),
'boole?':lambda x: isa(x, bool), 'scag':lambda f, x: list(filter(f, x)),
'cuir_le':lambda proc,l: proc(*l), 'mapáil':lambda p, x: list(map(p, x)),
'lódáil':lambda fn: load(fn), 'léigh':lambda f: f.read(),
'oscail_comhad_ionchuir':open,'dún_comhad_ionchuir':lambda p: p.file.close(),
'oscail_comhad_aschur':lambda f:open(f,'w'), 'dún_comhad_aschur':lambda p: p.close(),
'dac?':lambda x:x is eof_object, 'luacháil':lambda x: evaluate(x),
'scríobh':lambda x,port=sys.stdout:port.write(to_string(x) + '\n')})
return self
def _validate_query_state(self):
for attr, methname, notset, op in (
('_limit', 'limit()', None, operator.is_),
('_offset', 'offset()', None, operator.is_),
('_order_by', 'order_by()', False, operator.is_),
('_group_by', 'group_by()', False, operator.is_),
('_distinct', 'distinct()', False, operator.is_),
(
'_from_obj',
'join(), outerjoin(), select_from(), or from_self()',
(), operator.eq)
):
if not op(getattr(self.query, attr), notset):
raise sa_exc.InvalidRequestError(
"Can't call Query.update() or Query.delete() "
"when %s has been called" %
(methname, )
)
def _validate_query_state(self):
for attr, methname, notset, op in (
('_limit', 'limit()', None, operator.is_),
('_offset', 'offset()', None, operator.is_),
('_order_by', 'order_by()', False, operator.is_),
('_group_by', 'group_by()', False, operator.is_),
('_distinct', 'distinct()', False, operator.is_),
(
'_from_obj',
'join(), outerjoin(), select_from(), or from_self()',
(), operator.eq)
):
if not op(getattr(self.query, attr), notset):
raise sa_exc.InvalidRequestError(
"Can't call Query.update() or Query.delete() "
"when %s has been called" %
(methname, )
)
def _validate_query_state(self):
for attr, methname, notset, op in (
('_limit', 'limit()', None, operator.is_),
('_offset', 'offset()', None, operator.is_),
('_order_by', 'order_by()', False, operator.is_),
('_group_by', 'group_by()', False, operator.is_),
('_distinct', 'distinct()', False, operator.is_),
(
'_from_obj',
'join(), outerjoin(), select_from(), or from_self()',
(), operator.eq)
):
if not op(getattr(self.query, attr), notset):
raise sa_exc.InvalidRequestError(
"Can't call Query.update() or Query.delete() "
"when %s has been called" %
(methname, )
)
def _validate_query_state(self):
for attr, methname, notset, op in (
('_limit', 'limit()', None, operator.is_),
('_offset', 'offset()', None, operator.is_),
('_order_by', 'order_by()', False, operator.is_),
('_group_by', 'group_by()', False, operator.is_),
('_distinct', 'distinct()', False, operator.is_),
(
'_from_obj',
'join(), outerjoin(), select_from(), or from_self()',
(), operator.eq)
):
if not op(getattr(self.query, attr), notset):
raise sa_exc.InvalidRequestError(
"Can't call Query.update() or Query.delete() "
"when %s has been called" %
(methname, )
)
def _validate_query_state(self):
for attr, methname, notset, op in (
('_limit', 'limit()', None, operator.is_),
('_offset', 'offset()', None, operator.is_),
('_order_by', 'order_by()', False, operator.is_),
('_group_by', 'group_by()', False, operator.is_),
('_distinct', 'distinct()', False, operator.is_),
(
'_from_obj',
'join(), outerjoin(), select_from(), or from_self()',
(), operator.eq)
):
if not op(getattr(self.query, attr), notset):
raise sa_exc.InvalidRequestError(
"Can't call Query.update() or Query.delete() "
"when %s has been called" %
(methname, )
)
def _validate_query_state(self):
for attr, methname, notset, op in (
('_limit', 'limit()', None, operator.is_),
('_offset', 'offset()', None, operator.is_),
('_order_by', 'order_by()', False, operator.is_),
('_group_by', 'group_by()', False, operator.is_),
('_distinct', 'distinct()', False, operator.is_),
(
'_from_obj',
'join(), outerjoin(), select_from(), or from_self()',
(), operator.eq)
):
if not op(getattr(self.query, attr), notset):
raise sa_exc.InvalidRequestError(
"Can't call Query.update() or Query.delete() "
"when %s has been called" %
(methname, )
)
def _validate_query_state(self):
for attr, methname, notset, op in (
('_limit', 'limit()', None, operator.is_),
('_offset', 'offset()', None, operator.is_),
('_order_by', 'order_by()', False, operator.is_),
('_group_by', 'group_by()', False, operator.is_),
('_distinct', 'distinct()', False, operator.is_),
(
'_from_obj',
'join(), outerjoin(), select_from(), or from_self()',
(), operator.eq)
):
if not op(getattr(self.query, attr), notset):
raise sa_exc.InvalidRequestError(
"Can't call Query.update() or Query.delete() "
"when %s has been called" %
(methname, )
)
def _validate_query_state(self):
for attr, methname, notset, op in (
('_limit', 'limit()', None, operator.is_),
('_offset', 'offset()', None, operator.is_),
('_order_by', 'order_by()', False, operator.is_),
('_group_by', 'group_by()', False, operator.is_),
('_distinct', 'distinct()', False, operator.is_),
(
'_from_obj',
'join(), outerjoin(), select_from(), or from_self()',
(), operator.eq)
):
if not op(getattr(self.query, attr), notset):
raise sa_exc.InvalidRequestError(
"Can't call Query.update() or Query.delete() "
"when %s has been called" %
(methname, )
)
def test_is(self):
a = b = 'xyzpdq'
c = a[:3] + b[3:]
self.assertRaises(TypeError, operator.is_)
self.assertTrue(operator.is_(a, b))
self.assertFalse(operator.is_(a,c))
