原始代码：

import keras
import numpy as np

path = keras.utils.get_file(
    'nietzsche.txt',
    origin='https://s3.amazonaws.com/text-datasets/nietzsche.txt'
)
text = open(path).read().lower()
print('Corpus length:', len(text))

报错情况：

D:\Anaconda\envs\tensorflow\python.exe D:/PYCHARMprojects/Dailypractise/p23.py
Downloading data from https://s3.amazonaws.com/text-datasets/nietzsche.txt
Traceback (most recent call last):
  File "D:\Anaconda\envs\tensorflow\lib\urllib\request.py", line 1354, in do_open
    h.request(req.get_method(), req.selector, req.data, headers,
  File "D:\Anaconda\envs\tensorflow\lib\http\client.py", line 1255, in request
    self._send_request(method, url, body, headers, encode_chunked)
  File "D:\Anaconda\envs\tensorflow\lib\http\client.py", line 1301, in _send_request
    self.endheaders(body, encode_chunked=encode_chunked)
  File "D:\Anaconda\envs\tensorflow\lib\http\client.py", line 1250, in endheaders
    self._send_output(message_body, encode_chunked=encode_chunked)
  File "D:\Anaconda\envs\tensorflow\lib\http\client.py", line 1010, in _send_output
    self.send(msg)
  File "D:\Anaconda\envs\tensorflow\lib\http\client.py", line 950, in send
    self.connect()
  File "D:\Anaconda\envs\tensorflow\lib\http\client.py", line 1424, in connect
    self.sock = self._context.wrap_socket(self.sock,
  File "D:\Anaconda\envs\tensorflow\lib\ssl.py", line 500, in wrap_socket
    return self.sslsocket_class._create(
  File "D:\Anaconda\envs\tensorflow\lib\ssl.py", line 1040, in _create
    self.do_handshake()
  File "D:\Anaconda\envs\tensorflow\lib\ssl.py", line 1309, in do_handshake
    self._sslobj.do_handshake()
ConnectionResetError: [WinError 10054] 远程主机强迫关闭了一个现有的连接。

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "D:\Anaconda\envs\tensorflow\lib\site-packages\tensorflow\python\keras\utils\data_utils.py", line 278, in get_file
    urlretrieve(origin, fpath, dl_progress)
  File "D:\Anaconda\envs\tensorflow\lib\urllib\request.py", line 247, in urlretrieve
    with contextlib.closing(urlopen(url, data)) as fp:
  File "D:\Anaconda\envs\tensorflow\lib\urllib\request.py", line 222, in urlopen
    return opener.open(url, data, timeout)
  File "D:\Anaconda\envs\tensorflow\lib\urllib\request.py", line 525, in open
    response = self._open(req, data)
  File "D:\Anaconda\envs\tensorflow\lib\urllib\request.py", line 542, in _open
    result = self._call_chain(self.handle_open, protocol, protocol +
  File "D:\Anaconda\envs\tensorflow\lib\urllib\request.py", line 502, in _call_chain
    result = func(*args)
  File "D:\Anaconda\envs\tensorflow\lib\urllib\request.py", line 1397, in https_open
    return self.do_open(http.client.HTTPSConnection, req,
  File "D:\Anaconda\envs\tensorflow\lib\urllib\request.py", line 1357, in do_open
    raise URLError(err)
urllib.error.URLError: <urlopen error [WinError 10054] 远程主机强迫关闭了一个现有的连接。>

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "D:/PYCHARMprojects/Dailypractise/p23.py", line 9, in <module>
    path = keras.utils.get_file(
  File "D:\Anaconda\envs\tensorflow\lib\site-packages\tensorflow\python\keras\utils\data_utils.py", line 282, in get_file
    raise Exception(error_msg.format(origin, e.errno, e.reason))
Exception: URL fetch failure on https://s3.amazonaws.com/text-datasets/nietzsche.txt: None -- [WinError 10054] 远程主机强迫关闭了一个现有的连接。

Process finished with exit code 1

解决方案：

1、直接在浏览器搜索该网址，右击将其另存到一个地方。

2、修改代码

import keras
import numpy as np

path = r'D:\PYCHARMprojects\Dailypractise\nietzsche.txt'#文件保存地址

text = open(path).read().lower()
print('Corpus length:', len(text))

3、运行成功