安装seq2seq错误汇总

1.问题一：

报错信息如下：

ImportError: Failed to import test module: seq2seq
Traceback (most recent call last):
  File "/usr/lib/python3.5/unittest/loader.py", line 153, in loadTestsFromName
    module = __import__(module_name)
  File "/home/tfdata/seq2seq/seq2seq/__init__.py", line 26, in <module>
    from seq2seq import decoders
  File "/home/tfdata/seq2seq/seq2seq/decoders/__init__.py", line 20, in <module>
    from seq2seq.decoders.attention_decoder import *
  File "/home/tfdata/seq2seq/seq2seq/decoders/attention_decoder.py", line 27, in <module>
    from seq2seq.contrib.seq2seq.helper import CustomHelper
  File "/home/tfdata/seq2seq/seq2seq/contrib/seq2seq/helper.py", line 35, in <module>
    from tensorflow.contrib.distributions.python.ops import bernoulli
ImportError: cannot import name 'bernoulli'

解决方案：
修改 seq2seq/contrib/seq2seq/helper.py 文件

sudo vim seq2seq/contrib/seq2seq/helper.py

找到位置，修改为如下信息：

from tensorflow.contrib.distributions import  Bernoulli
from tensorflow.contrib.distributions import Categorical

sampler = Bernoulli(probs=self._sampling_probability)
sample_id_sampler = Categorical(logits=outputs)

---

2.问题二

很有可能你解决第一个问题后，就会遇见第二个问题
报错信息：

ERROR: test_train_infer (seq2seq.test.pipeline_test.PipelineTest)
Tests training and inference scripts.
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/tfdata/seq2seq/seq2seq/test/pipeline_test.py", line 76, in test_train_infer
    _clear_flags()
  File "/home/tfdata/seq2seq/seq2seq/test/pipeline_test.py", line 44, in _clear_flags
    tf.app.flags.FLAGS = tf.app.flags._FlagValues()
AttributeError: module 'tensorflow.python.platform.flags' has no attribute '_FlagValues'

这个问题的解决办法是：

修改 seq2seq/test/pipeline_test.py 这个文件

sudo vim seq2seq/test/pipeline_test.py

修改 def _clear_flags() 这个方法
改为下面这种：

def _clear_flags():
  """Resets Tensorflow's FLAG values"""
  #pylint: disable=W0212
  for flag_key in dir(tf.app.flags.FLAGS):
      delattr(tf.app.flags.FLAGS, flag_key)
  #tf.app.flags.FLAGS = tf.app.flags._FlagValues()
  tf.app.flags._global_parser = argparse.ArgumentParser()

---

3. 问题三

解决上面两个问题，还会遇见第三个问题：缺少 python3-tk 这个包
报错信息如下：

Traceback (most recent call last):
  File "/usr/lib/python3.5/tkinter/__init__.py", line 36, in 
    import _tkinter
ImportError: No module named '_tkinter'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/tfdata/seq2seq/seq2seq/test/pipeline_test.py", line 163, in test_train_infer
    os.path.join(BIN_FOLDER, "infer.py"))
  File "/usr/lib/python3.5/imp.py", line 172, in load_source
    module = _load(spec)
  File "", line 693, in _load
  File "", line 673, in _load_unlocked
  File "", line 665, in exec_module
  File "", line 222, in _call_with_frames_removed
  File "/home/tfdata/seq2seq/bin/infer.py", line 32, in 
    from seq2seq import tasks, models
  File "/home/tfdata/seq2seq/seq2seq/tasks/__init__.py", line 20, in 
    from seq2seq.tasks.dump_attention import DumpAttention
  File "/home/tfdata/seq2seq/seq2seq/tasks/dump_attention.py", line 26, in 
    from matplotlib import pyplot as plt
  File "/usr/local/lib/python3.5/dist-packages/matplotlib/pyplot.py", line 115, in 
    _backend_mod, new_figure_manager, draw_if_interactive, _show = pylab_setup()
  File "/usr/local/lib/python3.5/dist-packages/matplotlib/backends/__init__.py", line 62, in pylab_setup
    [backend_name], 0)
  File "/usr/local/lib/python3.5/dist-packages/matplotlib/backends/backend_tkagg.py", line 4, in 
    from . import tkagg  # Paint image to Tk photo blitter extension.
  File "/usr/local/lib/python3.5/dist-packages/matplotlib/backends/tkagg.py", line 5, in 
    from six.moves import tkinter as Tk
  File "/usr/local/lib/python3.5/dist-packages/six.py", line 92, in __get__
    result = self._resolve()
  File "/usr/local/lib/python3.5/dist-packages/six.py", line 115, in _resolve
    return _import_module(self.mod)
  File "/usr/local/lib/python3.5/dist-packages/six.py", line 82, in _import_module
    __import__(name)
  File "/usr/lib/python3.5/tkinter/__init__.py", line 38, in 
    raise ImportError(str(msg) + ', please install the python3-tk package')
ImportError: No module named '_tkinter', please install the python3-tk package

这里，我们只需要换下源，再updata下 就能安装python3-tk 包了

换源教程：https://blog.csdn.net/cow66/article/details/80790451

sudo apt update
sudo apt install python3-tk -y

---

4.问题四：

报错信息如下：

_tkinter.TclError: no display name and no $DISPLAY environment variable

这里只需要

echo "backend : Agg" >> $HOME/.config/matplotlib/matplotlibrc