Python 在Windows中更新Anaconda后出现dask问题

我在Windows中使用Delayed和Futures正确地使用Dask.distributed，但在今天使用以下命令更新我的anaconda环境后遇到问题：

conda update conda
conda update anaconda
conda update spyder

以前起作用的现在不起作用了。即使是以下简单代码也不起作用：

from dask.distributed import Client

client = Client(n_workers=4)

from time import sleep

def inc(x):
    sleep(1)
    return x + 1

def add(x, y):
    sleep(1)
    return x + y

from dask import delayed
x = delayed(inc)(1)
y = delayed(inc)(2)
z = delayed(add)(x, y)
z.compute()

它陷入困境，无法提供解决方案。我还试图通过在inc和add函数的开头打印一些内容来查看执行流程，但系统没有打印任何内容。我附上一个dask仪表板的图，以防有帮助。我还附加client.get\u版本的结果。您知道dask是否与相关软件包的任何新版本不兼容吗？关于可能发生的事情有什么线索吗

client.get_versions(check=True)
    {'scheduler': {'host': (('python', '3.7.3.final.0'),
   ('python-bits', 64),
   ('OS', 'Windows'),
   ('OS-release', '10'),
   ('machine', 'AMD64'),
   ('processor', 'Intel64 Family 6 Model 158 Stepping 13, GenuineIntel'),
   ('byteorder', 'little'),
   ('LC_ALL', 'None'),
   ('LANG', 'None'),
   ('LOCALE', 'None.None')),
  'packages': {'required': (('dask', '2.1.0'),
    ('distributed', '2.1.0'),
    ('msgpack', '1.0.0'),
    ('cloudpickle', '1.3.0'),
    ('tornado', '6.0.4'),
    ('toolz', '0.10.0')),
   'optional': (('numpy', '1.18.1'),
    ('pandas', '1.0.3'),
    ('bokeh', '2.0.0'),
    ('lz4', None),
    ('dask_ml', None),
    ('blosc', None))}},
 'workers': {'tcp://192.168.0.13:56997': {'host': (('python', '3.7.3.final.0'),
    ('python-bits', 64),
    ('OS', 'Windows'),
    ('OS-release', '10'),
    ('machine', 'AMD64'),
    ('processor', 'Intel64 Family 6 Model 158 Stepping 13, GenuineIntel'),
    ('byteorder', 'little'),
    ('LC_ALL', 'None'),
    ('LANG', 'None'),
    ('LOCALE', 'None.None')),
   'packages': {'required': (('dask', '2.1.0'),
     ('distributed', '2.1.0'),
     ('msgpack', '1.0.0'),
     ('cloudpickle', '1.3.0'),
     ('tornado', '6.0.4'),
     ('toolz', '0.10.0')),
    'optional': (('numpy', '1.18.1'),
     ('pandas', '1.0.3'),
     ('bokeh', '2.0.0'),
     ('lz4', None),
     ('dask_ml', None),
     ('blosc', None))}},
  'tcp://192.168.0.13:56998': {'host': (('python', '3.7.3.final.0'),
    ('python-bits', 64),
    ('OS', 'Windows'),
    ('OS-release', '10'),
    ('machine', 'AMD64'),
    ('processor', 'Intel64 Family 6 Model 158 Stepping 13, GenuineIntel'),
    ('byteorder', 'little'),
    ('LC_ALL', 'None'),
    ('LANG', 'None'),
    ('LOCALE', 'None.None')),
   'packages': {'required': (('dask', '2.1.0'),
     ('distributed', '2.1.0'),
     ('msgpack', '1.0.0'),
     ('cloudpickle', '1.3.0'),
     ('tornado', '6.0.4'),
     ('toolz', '0.10.0')),
    'optional': (('numpy', '1.18.1'),
     ('pandas', '1.0.3'),
     ('bokeh', '2.0.0'),
     ('lz4', None),
     ('dask_ml', None),
     ('blosc', None))}},
  'tcp://192.168.0.13:57001': {'host': (('python', '3.7.3.final.0'),
    ('python-bits', 64),
    ('OS', 'Windows'),
    ('OS-release', '10'),
    ('machine', 'AMD64'),
    ('processor', 'Intel64 Family 6 Model 158 Stepping 13, GenuineIntel'),
    ('byteorder', 'little'),
    ('LC_ALL', 'None'),
    ('LANG', 'None'),
    ('LOCALE', 'None.None')),
   'packages': {'required': (('dask', '2.1.0'),
     ('distributed', '2.1.0'),
     ('msgpack', '1.0.0'),
     ('cloudpickle', '1.3.0'),
     ('tornado', '6.0.4'),
     ('toolz', '0.10.0')),
    'optional': (('numpy', '1.18.1'),
     ('pandas', '1.0.3'),
     ('bokeh', '2.0.0'),
     ('lz4', None),
     ('dask_ml', None),
     ('blosc', None))}},
  'tcp://192.168.0.13:57003': {'host': (('python', '3.7.3.final.0'),
    ('python-bits', 64),
    ('OS', 'Windows'),
    ('OS-release', '10'),
    ('machine', 'AMD64'),
    ('processor', 'Intel64 Family 6 Model 158 Stepping 13, GenuineIntel'),
    ('byteorder', 'little'),
    ('LC_ALL', 'None'),
    ('LANG', 'None'),
    ('LOCALE', 'None.None')),
   'packages': {'required': (('dask', '2.1.0'),
     ('distributed', '2.1.0'),
     ('msgpack', '1.0.0'),
     ('cloudpickle', '1.3.0'),
     ('tornado', '6.0.4'),
     ('toolz', '0.10.0')),
    'optional': (('numpy', '1.18.1'),
     ('pandas', '1.0.3'),
     ('bokeh', '2.0.0'),
     ('lz4', None),
     ('dask_ml', None),
     ('blosc', None))}}},
 'client': {'host': [('python', '3.7.3.final.0'),
   ('python-bits', 64),
   ('OS', 'Windows'),
   ('OS-release', '10'),
   ('machine', 'AMD64'),
   ('processor', 'Intel64 Family 6 Model 158 Stepping 13, GenuineIntel'),
   ('byteorder', 'little'),
   ('LC_ALL', 'None'),
   ('LANG', 'None'),
   ('LOCALE', 'None.None')],
  'packages': {'required': [('dask', '2.1.0'),
    ('distributed', '2.1.0'),
    ('msgpack', '1.0.0'),
    ('cloudpickle', '1.3.0'),
    ('tornado', '6.0.4'),
    ('toolz', '0.10.0')],
   'optional': [('numpy', '1.18.1'),
    ('pandas', '1.0.3'),
    ('bokeh', '2.0.0'),
    ('lz4', None),
    ('dask_ml', None),
    ('blosc', None)]}}}

---

我设法解决了它。出于某种原因，Anaconda没有安装dask库的最新版本。因此，只需将dask软件包更新到最新版本就解决了问题。

为了帮助其他人，您可能需要更具体地了解原始问题中“更新anaconda”的含义。你的意思是说最新版本的anaconda安装程序（“anaconda个人版”）没有安装最新的dask吗？然后指定更新它的确切方式。