1.SettingWithCopyWarning: A value is trying to be set on a copy of a slice from a DataFrame 场景:运用pandas修改某个序号所对应的key值时出现了该类警告 https://stackoverflow.com/questions/26724378/pandas-settingwithcopywarning 代码: df_index = df.loc[index]df_index[key] = value…

The difference between mascara and the extension Mascara Is in alpha and some of it's behaviors are still undocumented. 1.页面控制台报错 运行eth.accounts出错: (node) warning: possible EventEmitter memory leak detected. 11 listeners added. Use emitter.setMaxList…

1.在命令行输入:scrapy crawl demo(demo为爬虫标识,是唯一的) 2.报错信息如下所示: 3.解决方法:https://github.com/mhammond/pywin32/releases下载想对应的exe安装即可.…

Hive中有一表,列分隔符为冒号(:),有一列utime是Timestamp格式,需要转成Weekday存到新表. 利用Python写一个Pipeline的Transform,weekday.py的代码也很简单: import sys import datetime for line in sys.stdin:  line=line.strip()  uid,mid,rating,utime=line.split(':')  weekday=datetime.datetime.fromtimes…

1.更换Python版本 打开pycharm,点击 file——setting——project项目名——project Interpreter,点击右侧的设置,如下图 选择新Python版本的安装路径. 如果location提示“environment location directory is not empty”,导致无法保存.则将location路径的文件夹删掉,然后再重新设置就可以保存了. 2.添加selenium包 没有安装selenium包时,程序中importselenium包报…

下载的一个库编译时依赖boost,记录一下boost的编译: 下载源码 vs命令行里cd到根目录,运行bootstrap.bat,发现多了几个文件{b2.exe.bjam.exe.project-config.jam.bootstrap.log.其中b2.exe和bjam.exe两个作用一样,bjam.exe对应的是老版本,b2是bjam的升级版本.} 生成好编译程序以后,可以使用以下命令来编译boost了. b2.exe stage --toolset=msvc-14.1 address-mo…

服务Firewall和Internet Sharing Service都已启动还是出现此问题 注意到点选允许共享时的提示:当前已为wireless_95364开启...... 随便选一个别的适配器,开启共享,没有报错(报错没报错都没关系,随便选个适配器共享别的适配器,如果一不小心成功了那就把共享关掉). 再回到本地连接设置就不会报错了.…

A Java Runtime Environment (JRE) or Java Development Kit (JDK)must be available in order to run Eclipse Installer. No Java virtual machinewas found after searching the following locations:/opt/eclipse-installer/jre/bin/javajava in your current PATH 这…

具体的错误信息如下: Exception in thread "main" java.lang.SecurityException: SHA1 digest error for org/eclipse/swt/widgets/Table.class at sun.security.util.ManifestEntryVerifier.verify(Unknown Source) at java.util.jar.JarVerifier.processEntry(Unknown Sour…

2016/12/20 13:51:55 ERROR - jmeter.save.SaveService: Conversion error com.thoughtworks.xstream.converters.ConversionException: kg.apc.jmeter.vizualizers.CorrectedResultCollector : kg.apc.jmeter.vizualizers.CorrectedResultCollector ---- Debugging info…