BVhr @dZdZdZGddeZGddeZy)z(Utilities used to capture Python idioms.cFt|tr|jS|S)zLoad variable operator.) isinstance Undefinedread)vs _/home/dcms/DCMS/lib/python3.12/site-packages/tensorflow/python/autograph/operators/variables.pyldrs9 668O (c\ |S#tttf$rt|cYSwxYw)aLoad variable operator that returns Undefined when failing to evaluate. Note: the name ("load or return undefined") is abbreviated to minimize the amount of clutter in generated code. This variant of `ld` is useful when loading symbols that may be undefined at runtime, such as composite symbols, and whether they are defined or not cannot be determined statically. For example `d['a']` is undefined when `d` is an empty dict. Args: load_v: Lambda that executes the actual read. name: Human-readable name of the symbol being read. Returns: Either the value of the symbol, or Undefined, if the symbol is not fully defined. )KeyErrorAttributeError NameErrorr)load_vnames rldurs.$ 8O NI . T?s  ++c2eZdZdZdZdZdZdZdZdZ y) raRepresents an undefined symbol in Python. This is used to reify undefined symbols, which is required to use the functional form of loops. Example: while n > 0: n = n - 1 s = n return s # Runtime error if n == 0 This is valid Python code and will not result in an error as long as n is positive. The use of this class is to stay as close to Python semantics as possible for staged code of this nature. Converted version of the above showing the possible usage of this class: s = Undefined('s') init_state = (s,) s = while_loop(cond, body, init_state) return s # s is an instance of Undefined if the loop never runs Attributes: symbol_name: Text, identifier for the undefined symbol  symbol_namec||_yNr)selfrs r__init__zUndefined.__init__Os "Dr cJtdj|j)Nz'{}' is used before assignment)UnboundLocalErrorformatrrs rrzUndefined.readRs& <CC  r c|jSrrrs r__repr__zUndefined.__repr__Vs   r cR tj||S#t$r|cYSwxYwr)object__getattribute__r )rrs rr zUndefined.__getattribute__Ys.  $ $T4 00  ks  &&c|Sr)ris r __getitem__zUndefined.__getitem__as Kr N) __name__ __module__ __qualname____doc__ __slots__rrrr r$r"r rrr2s'4)#r rceZdZdZy)UndefinedReturnValuez,Represents a return value that is undefined.N)r%r&r'r(r"r rr+r+fs4r r+N)r(rrrrr+r"r rr,s-/ 200h6r