我们从Python开源项目中，提取了以下13个代码示例，用于说明如何使用pickle.tell()。
def _genops(data, yield_end_pos=False): if isinstance(data, bytes_types): data = io.BytesIO(data) if hasattr(data, "tell"): getpos = data.tell else: getpos = lambda: None while True: pos = getpos() code = data.read(1) opcode = code2op.get(code.decode("latin-1")) if opcode is None: if code == b"": raise ValueError("pickle exhausted before seeing STOP") else: raise ValueError("at position %s, opcode %r unknown" % ( "<unknown>" if pos is None else pos, code)) if opcode.arg is None: arg = None else: arg = opcode.arg.reader(data) if yield_end_pos: yield opcode, arg, pos, getpos() else: yield opcode, arg, pos if code == b'.': assert opcode.name == 'STOP' break
def genops(pickle): """Generate all the opcodes in a pickle. 'pickle' is a file-like object, or string, containing the pickle. Each opcode in the pickle is generated, from the current pickle position, stopping after a STOP opcode is delivered. A triple is generated for each opcode: opcode, arg, pos opcode is an OpcodeInfo record, describing the current opcode. If the opcode has an argument embedded in the pickle, arg is its decoded value, as a Python object. If the opcode doesn't have an argument, arg is None. If the pickle has a tell() method, pos was the value of pickle.tell() before reading the current opcode. If the pickle is a bytes object, it's wrapped in a BytesIO object, and the latter's tell() result is used. Else (the pickle doesn't have a tell(), and it's not obvious how to query its current position) pos is None. """ return _genops(pickle) ############################################################################## # A pickle optimizer.
def genops(pickle): """Generate all the opcodes in a pickle. 'pickle' is a file-like object, or string, containing the pickle. Each opcode in the pickle is generated, from the current pickle position, stopping after a STOP opcode is delivered. A triple is generated for each opcode: opcode, arg, pos opcode is an OpcodeInfo record, describing the current opcode. If the opcode has an argument embedded in the pickle, arg is its decoded value, as a Python object. If the opcode doesn't have an argument, arg is None. If the pickle has a tell() method, pos was the value of pickle.tell() before reading the current opcode. If the pickle is a string object, it's wrapped in a StringIO object, and the latter's tell() result is used. Else (the pickle doesn't have a tell(), and it's not obvious how to query its current position) pos is None. """ import cStringIO as StringIO if isinstance(pickle, str): pickle = StringIO.StringIO(pickle) if hasattr(pickle, "tell"): getpos = pickle.tell else: getpos = lambda: None while True: pos = getpos() code = pickle.read(1) opcode = code2op.get(code) if opcode is None: if code == "": raise ValueError("pickle exhausted before seeing STOP") else: raise ValueError("at position %s, opcode %r unknown" % ( pos is None and "<unknown>" or pos, code)) if opcode.arg is None: arg = None else: arg = opcode.arg.reader(pickle) yield opcode, arg, pos if code == '.': assert opcode.name == 'STOP' break ############################################################################## # A pickle optimizer.
def genops(pickle): """Generate all the opcodes in a pickle. 'pickle' is a file-like object, or string, containing the pickle. Each opcode in the pickle is generated, from the current pickle position, stopping after a STOP opcode is delivered. A triple is generated for each opcode: opcode, arg, pos opcode is an OpcodeInfo record, describing the current opcode. If the opcode has an argument embedded in the pickle, arg is its decoded value, as a Python object. If the opcode doesn't have an argument, arg is None. If the pickle has a tell() method, pos was the value of pickle.tell() before reading the current opcode. If the pickle is a bytes object, it's wrapped in a BytesIO object, and the latter's tell() result is used. Else (the pickle doesn't have a tell(), and it's not obvious how to query its current position) pos is None. """ if isinstance(pickle, bytes_types): import io pickle = io.BytesIO(pickle) if hasattr(pickle, "tell"): getpos = pickle.tell else: getpos = lambda: None while True: pos = getpos() code = pickle.read(1) opcode = code2op.get(code.decode("latin-1")) if opcode is None: if code == b"": raise ValueError("pickle exhausted before seeing STOP") else: raise ValueError("at position %s, opcode %r unknown" % ( pos is None and "<unknown>" or pos, code)) if opcode.arg is None: arg = None else: arg = opcode.arg.reader(pickle) yield opcode, arg, pos if code == b'.': assert opcode.name == 'STOP' break ############################################################################## # A pickle optimizer.
