本文整理汇总了Python中psycopg2.Binary方法的典型用法代码示例。如果您正苦于以下问题：Python psycopg2.Binary方法的具体用法？Python psycopg2.Binary怎么用？Python psycopg2.Binary使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类psycopg2的用法示例。
在下文中一共展示了psycopg2.Binary方法的7个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: test_binary
# 需要导入模块: import psycopg2 [as 别名]
# 或者: from psycopg2 import Binary [as 别名]
def test_binary(self):
data = b("""some data with \000\013 binary
stuff into, 'quotes' and \\ a backslash too.
""")
if sys.version_info[0] < 3:
data += "".join(map(chr, range(256)))
else:
data += bytes(range(256))
curs = self.conn.cursor()
curs.execute("SELECT %s::bytea;", (psycopg2.Binary(data),))
if sys.version_info[0] < 3:
res = str(curs.fetchone()[0])
else:
res = curs.fetchone()[0].tobytes()
if res[0] in (b('x'), ord(b('x'))) and self.conn.server_version >= 90000:
return self.skipTest(
"bytea broken with server >= 9.0, libpq < 9")
self.assertEqual(res, data)
self.assert_(not self.conn.notices) 示例2: __init__
# 需要导入模块: import psycopg2 [as 别名]
# 或者: from psycopg2 import Binary [as 别名]
def __init__(self, geom):
"Initializes on the geometry."
# Getting the WKB (in string form, to allow easy pickling of
# the adaptor) and the SRID from the geometry.
self.ewkb = bytes(geom.ewkb)
self.srid = geom.srid
self._adapter = Binary(self.ewkb) 示例3: __init__
# 需要导入模块: import psycopg2 [as 别名]
# 或者: from psycopg2 import Binary [as 别名]
def __init__(self, geom, geography=False):
"Initializes on the geometry."
# Getting the WKB (in string form, to allow easy pickling of
# the adaptor) and the SRID from the geometry.
self.ewkb = bytes(geom.ewkb)
self.srid = geom.srid
self.geography = geography
self._adapter = Binary(self.ewkb) 示例4: testBinary
# 需要导入模块: import psycopg2 [as 别名]
# 或者: from psycopg2 import Binary [as 别名]
def testBinary(self):
if sys.version_info[0] < 3:
s = ''.join([chr(x) for x in range(256)])
b = psycopg2.Binary(s)
buf = self.execute("SELECT %s::bytea AS foo", (b,))
self.assertEqual(s, str(buf))
else:
s = bytes(range(256))
b = psycopg2.Binary(s)
buf = self.execute("SELECT %s::bytea AS foo", (b,))
self.assertEqual(s, buf.tobytes()) 示例5: testBinaryNone
# 需要导入模块: import psycopg2 [as 别名]
# 或者: from psycopg2 import Binary [as 别名]
def testBinaryNone(self):
b = psycopg2.Binary(None)
buf = self.execute("SELECT %s::bytea AS foo", (b,))
self.assertEqual(buf, None) 示例6: testBinaryEmptyString
# 需要导入模块: import psycopg2 [as 别名]
# 或者: from psycopg2 import Binary [as 别名]
def testBinaryEmptyString(self):
# test to make sure an empty Binary is converted to an empty string
if sys.version_info[0] < 3:
b = psycopg2.Binary('')
self.assertEqual(str(b), "''::bytea")
else:
b = psycopg2.Binary(bytes([]))
self.assertEqual(str(b), "''::bytea") 示例7: testBinaryRoundTrip
# 需要导入模块: import psycopg2 [as 别名]
# 或者: from psycopg2 import Binary [as 别名]
def testBinaryRoundTrip(self):
# test to make sure buffers returned by psycopg2 are
# understood by execute:
if sys.version_info[0] < 3:
s = ''.join([chr(x) for x in range(256)])
buf = self.execute("SELECT %s::bytea AS foo", (psycopg2.Binary(s),))
buf2 = self.execute("SELECT %s::bytea AS foo", (buf,))
self.assertEqual(s, str(buf2))
else:
s = bytes(range(256))
buf = self.execute("SELECT %s::bytea AS foo", (psycopg2.Binary(s),))
buf2 = self.execute("SELECT %s::bytea AS foo", (buf,))
self.assertEqual(s, buf2.tobytes())