Rasa: I can't install rasa_core!!! The command "pip install rasa_core" don't work

[Kanozis]

Rasa Core version:
Install don't work
Python version:
2.7.12
Operating system (windows, osx, ...):
Ubuntu server 16.04
Issue:
When i run "sudo pip install rasa_core" it's return:

Traceback (most recent call last):
File "/usr/local/lib/python2.7/dist-packages/pip-9.0.1-py2.7.egg/pip/basecommand.py", line 215, in main
status = self.run(options, args)
File "/usr/local/lib/python2.7/dist-packages/pip-9.0.1-py2.7.egg/pip/commands/install.py", line 324, in run
requirement_set.prepare_files(finder)
File "/usr/local/lib/python2.7/dist-packages/pip-9.0.1-py2.7.egg/pip/req/req_set.py", line 380, in prepare_files
ignore_dependencies=self.ignore_dependencies))
File "/usr/local/lib/python2.7/dist-packages/pip-9.0.1-py2.7.egg/pip/req/req_set.py", line 620, in _prepare_file
session=self.session, hashes=hashes)
File "/usr/local/lib/python2.7/dist-packages/pip-9.0.1-py2.7.egg/pip/download.py", line 821, in unpack_url
hashes=hashes
File "/usr/local/lib/python2.7/dist-packages/pip-9.0.1-py2.7.egg/pip/download.py", line 659, in unpack_http_url
hashes)
File "/usr/local/lib/python2.7/dist-packages/pip-9.0.1-py2.7.egg/pip/download.py", line 882, in _download_http_url
_download_url(resp, link, content_file, hashes)
File "/usr/local/lib/python2.7/dist-packages/pip-9.0.1-py2.7.egg/pip/download.py", line 603, in _download_url
hashes.check_against_chunks(downloaded_chunks)
File "/usr/local/lib/python2.7/dist-packages/pip-9.0.1-py2.7.egg/pip/utils/hashes.py", line 46, in check_against_chunks
for chunk in chunks:
File "/usr/local/lib/python2.7/dist-packages/pip-9.0.1-py2.7.egg/pip/download.py", line 571, in written_chunks
for chunk in chunks:
File "/usr/local/lib/python2.7/dist-packages/pip-9.0.1-py2.7.egg/pip/utils/ui.py", line 139, in iter
for x in it:
File "/usr/local/lib/python2.7/dist-packages/pip-9.0.1-py2.7.egg/pip/download.py", line 560, in resp_read
decode_content=False):
File "/usr/local/lib/python2.7/dist-packages/pip-9.0.1-py2.7.egg/pip/_vendor/requests/packages/urllib3/response.py", line 357, in stream
data = self.read(amt=amt, decode_content=decode_content)
File "/usr/local/lib/python2.7/dist-packages/pip-9.0.1-py2.7.egg/pip/_vendor/requests/packages/urllib3/response.py", line 314, in read
data = self._fp.read(amt)
File "/usr/local/lib/python2.7/dist-packages/pip-9.0.1-py2.7.egg/pip/_vendor/cachecontrol/filewrapper.py", line 63, in read
self._close()
File "/usr/local/lib/python2.7/dist-packages/pip-9.0.1-py2.7.egg/pip/_vendor/cachecontrol/filewrapper.py", line 50, in _close
self.__callback(self.__buf.getvalue())
File "/usr/local/lib/python2.7/dist-packages/pip-9.0.1-py2.7.egg/pip/_vendor/cachecontrol/controller.py", line 275, in cache_response
self.serializer.dumps(request, response, body=body),
File "/usr/local/lib/python2.7/dist-packages/pip-9.0.1-py2.7.egg/pip/_vendor/cachecontrol/serialize.py", line 55, in dumps
"body": _b64_encode_bytes(body),
File "/usr/local/lib/python2.7/dist-packages/pip-9.0.1-py2.7.egg/pip/_vendor/cachecontrol/serialize.py", line 12, in _b64_encode_bytes
return base64.b64encode(b).decode("ascii")
File "/usr/lib/python2.7/base64.py", line 54, in b64encode
encoded = binascii.b2a_base64(s)[:-1]
MemoryError

Content of domain file (if used & relevant):

[tmbo]

Try pip install rasa_core --no-cache-dir

[Kanozis]

It work perfectly!! Thanks you! What was the problem?

[Primtek]

pip install rasa_core --no-cache-dir --> does not work with me .. centOS 7

[Primtek]

---

Command "/usr/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-install-FiRhWX/Twisted/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('rn', 'n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-record-xUeCnf/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /tmp/pip-install-FiRhWX/Twisted/

[tmbo]

can you just try to install twisted (pip install twisted)?

[Primtek]

yes .. I successfully run pip install twisted