再用Python的pip安装包的时候出现以下错误，时间超时，解决办法就是吧等待时间调长
pip --default-timeout=1000 install requests（包名）
报错如下
ERROR: Exception: Traceback (most recent call last): File "/home/zhanshen/anaconda3/lib/python3.7/site-packages/pip/_vendor/urllib3/contrib/pyopenssl.py", line 304, in recv_into return self.connection.recv_into(*args, **kwargs) File "/home/zhanshen/anaconda3/lib/python3.7/site-packages/OpenSSL/SSL.py", line 1822, in recv_into self._raise_ssl_error(self._ssl, result) File "/home/zhanshen/anaconda3/lib/python3.7/site-packages/OpenSSL/SSL.py", line 1622, in _raise_ssl_error raise WantReadError() OpenSSL.SSL.WantReadError During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/home/zhanshen/anaconda3/lib/python3.7/site-packages/pip/_vendor/urllib3/contrib/pyopenssl.py", line 304, in recv_into return self.connection.recv_into(*args, **kwargs) File "/home/zhanshen/anaconda3/lib/python3.7/site-packages/OpenSSL/SSL.py", line 1822, in recv_into self._raise_ssl_error(self._ssl, result) File "/home/zhanshen/anaconda3/lib/python3.7/site-packages/OpenSSL/SSL.py", line 1622, in _raise_ssl_error raise WantReadError() OpenSSL.SSL.WantReadError During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/home/zhanshen/anaconda3/lib/python3.7/site-packages/pip/_vendor/urllib3/response.py", line 397, in _error_catcher yield File "/home/zhanshen/anaconda3/lib/python3.7/site-packages/pip/_vendor/urllib3/response.py", line 479, in read data = self._fp.read(amt) File "/home/zhanshen/anaconda3/lib/python3.7/site-packages/pip/_vendor/cachecontrol/filewrapper.py", line 62, in read data = self.__fp.read(amt) File "/home/zhanshen/anaconda3/lib/python3.7/http/client.py", line 457, in read n = self.readinto(b) File "/home/zhanshen/anaconda3/lib/python3.7/http/client.py", line 501, in readinto n = self.fp.readinto(b) File "/home/zhanshen/anaconda3/lib/python3.7/socket.py", line 589, in readinto return self._sock.recv_into(b) File "/home/zhanshen/anaconda3/lib/python3.7/site-packages/pip/_vendor/urllib3/contrib/pyopenssl.py", line 319, in recv_into return self.recv_into(*args, **kwargs) File "/home/zhanshen/anaconda3/lib/python3.7/site-packages/pip/_vendor/urllib3/contrib/pyopenssl.py", line 317, in recv_into raise timeout('The read operation timed out') socket.timeout: The read operation timed out During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/home/zhanshen/anaconda3/lib/python3.7/site-packages/pip/_internal/cli/base_command.py", line 188, in main status = self.run(options, args) File "/home/zhanshen/anaconda3/lib/python3.7/site-packages/pip/_internal/commands/install.py", line 345, in run resolver.resolve(requirement_set) File "/home/zhanshen/anaconda3/lib/python3.7/site-packages/pip/_internal/legacy_resolve.py", line 196, in resolve self._resolve_one(requirement_set, req) File "/home/zhanshen/anaconda3/lib/python3.7/site-packages/pip/_internal/legacy_resolve.py", line 359, in _resolve_one abstract_dist = self._get_abstract_dist_for(req_to_install) File "/home/zhanshen/anaconda3/lib/python3.7/site-packages/pip/_internal/legacy_resolve.py", line 307, in _get_abstract_dist_for self.require_hashes File "/home/zhanshen/anaconda3/lib/python3.7/site-packages/pip/_internal/operations/prepare.py", line 199, in prepare_linked_requirement progress_bar=self.progress_bar File "/home/zhanshen/anaconda3/lib/python3.7/site-packages/pip/_internal/download.py", line 1064, in unpack_url progress_bar=progress_bar File "/home/zhanshen/anaconda3/lib/python3.7/site-packages/pip/_internal/download.py", line 924, in unpack_http_url progress_bar) File "/home/zhanshen/anaconda3/lib/python3.7/site-packages/pip/_internal/download.py", line 1152, in _download_http_url _download_url(resp, link, content_file, hashes, progress_bar) File "/home/zhanshen/anaconda3/lib/python3.7/site-packages/pip/_internal/download.py", line 861, in _download_url hashes.check_against_chunks(downloaded_chunks) File "/home/zhanshen/anaconda3/lib/python3.7/site-packages/pip/_internal/utils/hashes.py", line 75, in check_against_chunks for chunk in chunks: File "/home/zhanshen/anaconda3/lib/python3.7/site-packages/pip/_internal/download.py", line 829, in written_chunks for chunk in chunks: File "/home/zhanshen/anaconda3/lib/python3.7/site-packages/pip/_internal/utils/ui.py", line 156, in iter for x in it: File "/home/zhanshen/anaconda3/lib/python3.7/site-packages/pip/_internal/download.py", line 818, in resp_read decode_content=False): File "/home/zhanshen/anaconda3/lib/python3.7/site-packages/pip/_vendor/urllib3/response.py", line 531, in stream data = self.read(amt=amt, decode_content=decode_content) File "/home/zhanshen/anaconda3/lib/python3.7/site-packages/pip/_vendor/urllib3/response.py", line 496, in read raise IncompleteRead(self._fp_bytes_read, self.length_remaining) File "/home/zhanshen/anaconda3/lib/python3.7/contextlib.py", line 130, in __exit__ self.gen.throw(type, value, traceback) File "/home/zhanshen/anaconda3/lib/python3.7/site-packages/pip/_vendor/urllib3/response.py", line 402, in _error_catcher raise ReadTimeoutError(self._pool, None, 'Read timed out.') pip._vendor.urllib3.exceptions.ReadTimeoutError: HTTPSConnectionPool(host='files.pythonhosted.org', port=443): Read timed out.
