36         object, to prevent user-controlled methods from being called during
50         if node is not None:
67     def construct_object(self, node, deep=False):  argument
70         if deep:
83                 if tag_prefix is not None and node.tag.startswith(tag_prefix):
99         if tag_suffix is None:
113         if deep:
124     def construct_sequence(self, node, deep=False):  argument
129         return [self.construct_object(child, deep=deep)
132     def construct_mapping(self, node, deep=False):  argument
139             key = self.construct_object(key_node, deep=deep)
143             value = self.construct_object(value_node, deep=deep)
147     def construct_pairs(self, node, deep=False):  argument
154             key = self.construct_object(key_node, deep=deep)
155             value = self.construct_object(value_node, deep=deep)
215     def construct_mapping(self, node, deep=False):  argument
218         return super().construct_mapping(node, deep=deep)
241         if value[0] == '-':
242             sign = -1
243         if value[0] in '+-':
268     nan_value = -inf_value/inf_value   # Trying to make a quiet NaN (like C99).
274         if value[0] == '-':
275             sign = -1
276         if value[0] in '+-':
311             r'''^(?P<year>[0-9][0-9][0-9][0-9])
312                 -(?P<month>[0-9][0-9]?)
313                 -(?P<day>[0-9][0-9]?)
315                 (?P<hour>[0-9][0-9]?)
316                 :(?P<minute>[0-9][0-9])
317                 :(?P<second>[0-9][0-9])
318                 (?:\.(?P<fraction>[0-9]*))?
319                 (?:[ \t]*(?P<tz>Z|(?P<tz_sign>[-+])(?P<tz_hour>[0-9][0-9]?)
320                 (?::(?P<tz_minute>[0-9][0-9]))?))?)?$''', re.X)
345             if values['tz_sign'] == '-':
346                 delta = -delta
355         # CPU-expensive.
420             state = self.construct_mapping(node, deep=True)
483     # 'extend' is blacklisted because it is used by
528                     "expected non-empty name appended to the tag", mark)
537                     "module %r is not imported" % name, mark)
543                     "expected non-empty name appended to the tag", mark)
557                     "module %r is not imported" % module_name, mark)
619         deep = hasattr(instance, '__setstate__')
620         state = self.construct_mapping(node, deep=deep)
634         # is how an object is created, check make_python_instance for details.
636             args = self.construct_sequence(node, deep=True)
642             value = self.construct_mapping(node, deep=True)
745 # Constructor is same as UnsafeConstructor. Need to leave this in place in case