时间：2020-12-16 python教程 查看: 1698
我写的这个程序
import tensorflow as tf
sess=tf.InteractiveSession()
x=tf.Variable([1.0,2.0])
a=tf.constant([3.0,3.0])
x.initializer.run()
sun=tf.div(x,a)
print(sub.eval())
sess.close()出现了如下所示的错误：
原因是倒数第二行的sub没有初始化，倒数第三行应该是初始化sub的，但是打错了，成了sun,这样后面出现的sub就相当于没有初始化，所以出现了变量没有初始化的错误。
FailedPreconditionError Traceback (most recent call last)
C:\Users\SKJ\Anaconda3\lib\site-packages\tensorflow\python\client\session.py in _do_call(self, fn, *args)
1360 try:
-> 1361 return fn(*args)
1362 except errors.OpError as e:
C:\Users\SKJ\Anaconda3\lib\site-packages\tensorflow\python\client\session.py in _run_fn(session, feed_dict, fetch_list, target_list, options, run_metadata)
1339 return tf_session.TF_Run(session, options, feed_dict, fetch_list,
-> 1340 target_list, status, run_metadata)
1341
C:\Users\SKJ\Anaconda3\lib\site-packages\tensorflow\python\framework\errors_impl.py in __exit__(self, type_arg, value_arg, traceback_arg)
515 compat.as_text(c_api.TF_Message(self.status.status)),
--> 516 c_api.TF_GetCode(self.status.status))
517 # Delete the underlying status object from memory otherwise it stays alive
FailedPreconditionError: Attempting to use uninitialized value Variable_1
[[Node: Variable_1/read = Identity[T=DT_FLOAT, _class=["loc:@Variable_1"], _device="/job:localhost/replica:0/task:0/device:CPU:0"](Variable_1)]]
During handling of the above exception, another exception occurred:
FailedPreconditionError Traceback (most recent call last)
<ipython-input-3-cac34f40642f> in <module>()
5 x.initializer.run()
6 sun=tf.div(x,a)
----> 7 print(sub.eval())
8 sess.close()
C:\Users\SKJ\Anaconda3\lib\site-packages\tensorflow\python\framework\ops.py in eval(self, feed_dict, session)
654
655 """
--> 656 return _eval_using_default_session(self, feed_dict, self.graph, session)
657
658
C:\Users\SKJ\Anaconda3\lib\site-packages\tensorflow\python\framework\ops.py in _eval_using_default_session(tensors, feed_dict, graph, session)
4899 "the tensor's graph is different from the session's "
4900 "graph.")
-> 4901 return session.run(tensors, feed_dict)
4902
4903
C:\Users\SKJ\Anaconda3\lib\site-packages\tensorflow\python\client\session.py in run(self, fetches, feed_dict, options, run_metadata)
903 try:
904 result = self._run(None, fetches, feed_dict, options_ptr,
--> 905 run_metadata_ptr)
906 if run_metadata:
907 proto_data = tf_session.TF_GetBuffer(run_metadata_ptr)
C:\Users\SKJ\Anaconda3\lib\site-packages\tensorflow\python\client\session.py in _run(self, handle, fetches, feed_dict, options, run_metadata)
1135 if final_fetches or final_targets or (handle and feed_dict_tensor):
1136 results = self._do_run(handle, final_targets, final_fetches,
-> 1137 feed_dict_tensor, options, run_metadata)
1138 else:
1139 results = []
C:\Users\SKJ\Anaconda3\lib\site-packages\tensorflow\python\client\session.py in _do_run(self, handle, target_list, fetch_list, feed_dict, options, run_metadata)
1353 if handle is None:
1354 return self._do_call(_run_fn, self._session, feeds, fetches, targets,
-> 1355 options, run_metadata)
1356 else:
1357 return self._do_call(_prun_fn, self._session, handle, feeds, fetches)
C:\Users\SKJ\Anaconda3\lib\site-packages\tensorflow\python\client\session.py in _do_call(self, fn, *args)
1372 except KeyError:
1373 pass
-> 1374 raise type(e)(node_def, op, message)
1375
1376 def _extend_graph(self):
FailedPreconditionError: Attempting to use uninitialized value Variable_1
[[Node: Variable_1/read = Identity[T=DT_FLOAT, _class=["loc:@Variable_1"], _device="/job:localhost/replica:0/task:0/device:CPU:0"](Variable_1)]]
Caused by op 'Variable_1/read', defined at:
File "C:\Users\SKJ\Anaconda3\lib\runpy.py", line 184, in _run_module_as_main
"__main__", mod_spec)
File "C:\Users\SKJ\Anaconda3\lib\runpy.py", line 85, in _run_code
exec(code, run_globals)
File "C:\Users\SKJ\Anaconda3\lib\site-packages\ipykernel\__main__.py", line 3, in <module>
app.launch_new_instance()
File "C:\Users\SKJ\Anaconda3\lib\site-packages\traitlets\config\application.py", line 653, in launch_instance
app.start()
File "C:\Users\SKJ\Anaconda3\lib\site-packages\ipykernel\kernelapp.py", line 474, in start
ioloop.IOLoop.instance().start()
File "C:\Users\SKJ\Anaconda3\lib\site-packages\zmq\eventloop\ioloop.py", line 162, in start
super(ZMQIOLoop, self).start()
File "C:\Users\SKJ\Anaconda3\lib\site-packages\tornado\ioloop.py", line 887, in start
handler_func(fd_obj, events)
File "C:\Users\SKJ\Anaconda3\lib\site-packages\tornado\stack_context.py", line 275, in null_wrapper
return fn(*args, **kwargs)
File "C:\Users\SKJ\Anaconda3\lib\site-packages\zmq\eventloop\zmqstream.py", line 440, in _handle_events
self._handle_recv()
File "C:\Users\SKJ\Anaconda3\lib\site-packages\zmq\eventloop\zmqstream.py", line 472, in _handle_recv
self._run_callback(callback, msg)
File "C:\Users\SKJ\Anaconda3\lib\site-packages\zmq\eventloop\zmqstream.py", line 414, in _run_callback
callback(*args, **kwargs)
File "C:\Users\SKJ\Anaconda3\lib\site-packages\tornado\stack_context.py", line 275, in null_wrapper
return fn(*args, **kwargs)
File "C:\Users\SKJ\Anaconda3\lib\site-packages\ipykernel\kernelbase.py", line 276, in dispatcher
return self.dispatch_shell(stream, msg)
File "C:\Users\SKJ\Anaconda3\lib\site-packages\ipykernel\kernelbase.py", line 228, in dispatch_shell
handler(stream, idents, msg)
File "C:\Users\SKJ\Anaconda3\lib\site-packages\ipykernel\kernelbase.py", line 390, in execute_request
user_expressions, allow_stdin)
File "C:\Users\SKJ\Anaconda3\lib\site-packages\ipykernel\ipkernel.py", line 196, in do_execute
res = shell.run_cell(code, store_history=store_history, silent=silent)
File "C:\Users\SKJ\Anaconda3\lib\site-packages\ipykernel\zmqshell.py", line 501, in run_cell
return super(ZMQInteractiveShell, self).run_cell(*args, **kwargs)
File "C:\Users\SKJ\Anaconda3\lib\site-packages\IPython\core\interactiveshell.py", line 2717, in run_cell
interactivity=interactivity, compiler=compiler, result=result)
File "C:\Users\SKJ\Anaconda3\lib\site-packages\IPython\core\interactiveshell.py", line 2821, in run_ast_nodes
if self.run_code(code, result):
File "C:\Users\SKJ\Anaconda3\lib\site-packages\IPython\core\interactiveshell.py", line 2881, in run_code
exec(code_obj, self.user_global_ns, self.user_ns)
File "<ipython-input-2-69a776ba1e33>", line 3, in <module>
x=tf.Variable([1.0,2.0])
File "C:\Users\SKJ\Anaconda3\lib\site-packages\tensorflow\python\ops\variables.py", line 233, in __init__
constraint=constraint)
File "C:\Users\SKJ\Anaconda3\lib\site-packages\tensorflow\python\ops\variables.py", line 381, in _init_from_args
self._snapshot = array_ops.identity(self._variable, name="read")
File "C:\Users\SKJ\Anaconda3\lib\site-packages\tensorflow\python\ops\array_ops.py", line 131, in identity
return gen_array_ops.identity(input, name=name)
File "C:\Users\SKJ\Anaconda3\lib\site-packages\tensorflow\python\ops\gen_array_ops.py", line 2656, in identity
"Identity", input=input, name=name)
File "C:\Users\SKJ\Anaconda3\lib\site-packages\tensorflow\python\framework\op_def_library.py", line 787, in _apply_op_helper
op_def=op_def)
File "C:\Users\SKJ\Anaconda3\lib\site-packages\tensorflow\python\framework\ops.py", line 3271, in create_op
op_def=op_def)
File "C:\Users\SKJ\Anaconda3\lib\site-packages\tensorflow\python\framework\ops.py", line 1650, in __init__
self._traceback = self._graph._extract_stack() # pylint: disable=protected-access
FailedPreconditionError (see above for traceback): Attempting to use uninitialized value Variable_1
[[Node: Variable_1/read = Identity[T=DT_FLOAT, _class=["loc:@Variable_1"], _device="/job:localhost/replica:0/task:0/device:CPU:0"](Variable_1)]]以上这篇解决tensorflow由于未初始化变量而导致的错误问题就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持python博客。