内存错误，同时使用pip安装Matplotlib
我正在使用Python 2.7，如果我尝试安装Matplotlib我得到这个错误，如果我使用“pip安装matplotlib”
Exception: Traceback (most recent call last): File "/usr/local/lib/python2.7/dist-packages/pip/basecommand.py", line 232, in main status = self.run(options, args) File "/usr/local/lib/python2.7/dist-packages/pip/commands/install.py", line 339, in run requirement_set.prepare_files(finder) File "/usr/local/lib/python2.7/dist-packages/pip/req/req_set.py", line 355, in prepare_files do_download, session=self.session, File "/usr/local/lib/python2.7/dist-packages/pip/download.py", line 782, in unpack_url session, File "/usr/local/lib/python2.7/dist-packages/pip/download.py", line 667, in unpack_http_url from_path, content_type = _download_http_url(link, session, temp_dir) File "/usr/local/lib/python2.7/dist-packages/pip/download.py", line 843, in _download_http_url _download_url(resp, link, content_file) File "/usr/local/lib/python2.7/dist-packages/pip/download.py", line 615, in _download_url for chunk in progress_indicator(resp_read(4096), 4096): File "/usr/local/lib/python2.7/dist-packages/pip/utils/ui.py", line 46, in iter for x in it: File "/usr/local/lib/python2.7/dist-packages/pip/download.py", line 580, in resp_read decode_content=False): File "/usr/local/lib/python2.7/dist-packages/pip/_vendor/requests/packages/urllib3/response.py", line 256, in stream data = self.read(amt=amt, decode_content=decode_content) File "/usr/local/lib/python2.7/dist-packages/pip/_vendor/requests/packages/urllib3/response.py", line 186, in read data = self._fp.read(amt) File "/usr/local/lib/python2.7/dist-packages/pip/_vendor/cachecontrol/filewrapper.py", line 54, in read self.__callback(self.__buf.getvalue()) File "/usr/local/lib/python2.7/dist-packages/pip/_vendor/cachecontrol/controller.py", line 205, in cache_response self.serializer.dumps(request, response, body=body), File "/usr/local/lib/python2.7/dist-packages/pip/_vendor/cachecontrol/serialize.py", line 81, in dumps ).encode("utf8"), MemoryError" 这个问题可能是什么？ 我正在使用一个16GB的SD卡覆盆子Pi 2。 我仍然有8GB的数据免费，但仍然得到这个错误。 请帮助
这个错误出现了，因为似乎pip的caching机制试图在caching之前将整个文件读入内存……这在有限的内存环境中造成问题，因为matplotlib是〜50mb。
一个更简单的解决scheme，直到pip修补为使用恒定空间cachingalgorithm，就是使用--no-cache-dir运行pip以避免caching：
$ pip --no-cache-dir install matplotlib
看起来你没有足够的RAM从头开始构buildmatplotlib。 要解决这个问题，要么打开swap：
# create swap file of 512 MB dd if=/dev/zero of=/swapfile bs=1024 count=524288 # modify permissions chown root:root /swapfile chmod 0600 /swapfile # setup swap area mkswap /swapfile # turn swap on swapon /swapfile
或者，如果您的SD卡上安装了raspbian，则可以从存储库安装matplotlib：
apt-get install python-matplotlib
