SyntaxError: invalid syntax ： if not 0 <= time_low < 1<<32L:

• 报错
  Traceback (most recent call last):
  File "D:/PyCharm 5.0.3/WorkSpace/2.NLP/8.高阶实践/1.PipelineQ.py", line 1, in
  import nltk
  File "D:\Anaconda3\lib\site-packages\nltk__init__.py", line 143, in
  from nltk.chunk import *
  File "D:\Anaconda3\lib\site-packages\nltk\chunk__init__.py", line 157, in
  from nltk.chunk.api import ChunkParserI
  File "D:\Anaconda3\lib\site-packages\nltk\chunk\api.py", line 13, in
  from nltk.parse import ParserI
  File "D:\Anaconda3\lib\site-packages\nltk\parse__init__.py", line 100, in
  from nltk.parse.transitionparser import TransitionParser
  File "D:\Anaconda3\lib\site-packages\nltk\parse\transitionparser.py", line 22, in
  from sklearn.datasets import load_svmlight_file
  File "D:\Python37\Lib\site-packages\sklearn__init__.py", line 76, in
  from .base import clone
  File "D:\Python37\Lib\site-packages\sklearn\base.py", line 16, in
  from .utils import _IS_32BIT
  File "D:\Python37\Lib\site-packages\sklearn\utils__init__.py", line 17, in
  from . import _joblib
  File "D:\Python37\Lib\site-packages\sklearn\utils_joblib.py", line 8, in
  import joblib
  File "D:\Python37\Lib\site-packages\joblib__init__.py", line 119, in
  from .parallel import Parallel
  File "D:\Python37\Lib\site-packages\joblib\parallel.py", line 28, in
  from ._parallel_backends import (FallbackToBackend, MultiprocessingBackend,
  File "D:\Python37\Lib\site-packages\joblib_parallel_backends.py", line 20, in
  from .pool import MemmappingPool
  File "D:\Python37\Lib\site-packages\joblib\pool.py", line 33, in
  from ._memmapping_reducer import get_memmapping_reducers
  File "D:\Python37\Lib\site-packages\joblib_memmapping_reducer.py", line 17, in
  from uuid import uuid4
  File "D:\Python37\Lib\site-packages\uuid.py", line 138
  if not 0 <= time_low < 1<<32L:

SyntaxError: invalid syntax

• 原因
  uuid版本不对，导致语法错误
• 解决
  在系统命令行卸载uuid：
  pip uninstall uuid
  在Anacanda3中重新安装：
  pip install uuid