使用pip3 install scrapy命令之后,会出现如下问题: Collecting scrapy Downloading Scrapy-1.4.0-py2.py3-none-any.whl (248kB) 100% |████████████████████████████████| 256kB 1.2MB/s Collecting PyDispatcher>=2.0.5 (from scrapy) Downloading PyDispatcher-2.0.5.tar.gz Collec…

证书原因: wget http://curl.haxx.se/ca/cacert.pem mv cacert.pem ca-bundle.crt sudo mkdir -p /etc/pki/tls/certs/ sudo cp ca-bundle.crt /etc/pki/tls/certs/…

在虚拟环境中安装drf-haystack时,pip报错 Liang-2:~ langying$ pip install django-haystack Collecting django-haystack Using cached https://files.pythonhosted.org/packages/69/43/3e247b7b2134b48e9a53fb387e191e5e05b5f38f2faf78ca892097c2b441/django-haystack-2.8.1.tar.g…

问题:pip3 install xxx失败 方案一:修改配置文件 首先在当前用户目录下建立文件夹.pip,然后在文件夹中创建pip.conf文件,再将源地址加进去即可. mkdir ~/.pipvim ~/.pip/pip.conf# 然后将下面这两行复制进去就好了[global] index-url = https://mirrors.aliyun.com/pypi/simple 解决方案二:临时给pip 或 pip3换源 命令格式:sudo pip3 install 包名 -i 镜像源url…

mac系统 pip3 install scrapy 失败 No local packages or working download links found for incremental>=16.10.1 使用pip3 install scrapy命令之后,会出现如下问题: Collecting scrapy Downloading Scrapy-1.4.0-py2.py3-none-any.whl (248kB) 100% |████████████████████████████████|…

主要错误提示如下: ld: library not found for -lssl clang: error: linker command failed with exit code 1 (use -v to see invocation) error: command 'clang' failed with exit status 1 ---------------------------------------- Failed building wheel for mysqlclient…

.安装支持pip3 sudo apt-get install python3-pip .安装scrapy 首先需要安装scrapy依赖项,否则scrapy安装失败,执行如下命令: sudo apt-get install builld-essential libssl-dev libffi-dev python3-dev 然后: sudo pip3 install scrapy…

1)安装pip3: sudo apt-get install python3-pip 2)安装scrapy sudo pip3 install scrapy 若出现版本过低问题: pip3 install --upgrade pip…

mac osx 系统 brew  install hadoop 安装指南   brew install hadoop 配置 core-site.xml:配置hdfs文件地址(记得chmod 对应文件夹,否则无法正常启动hdfs)和namenode的rpc通行端口 配置mapred-site.xml  中的map reduce通信端口 配置hdfs-site.xml 中的datanode 副本数. 格式化hdfs文件系统 启动Hadoop 和 yarn  namenode  datanode  m…

报错: DEPRECATION: Uninstalling a distutils installed project (six) has been deprecated and will be removed in a future version. This is due to the fact that uninstalling a distutils project will only partially uninstall the project. Uninstalling six-1…