一、进入官网，下载Pycharm2021.3版本
1.官网如下
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https://www.jetbrains.com/pycharm/2.在浏览器中进入官网后，点击Download
3.再点击右下角的Other versions
4.选择Version 2021.3下的2021.3-Linux(tar.gz)进行下载
二、安装Pycharm2021.3
1.先将该压缩包解压在当前目录下
（1）方法一：
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右击压缩文件，选择Extract Here
（2）方法二：
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通过命令解压，打开Terminal输入命令：如下
tar -zxvf your_file.tar.gz -C /path/to/directory
其中，-zxvf选项表示同时进行gzip解压和解包操作。your_file.tar.gz为要解压的文件名，而/path/to/directory则是要解压到的目标路径。
2.将解压的文件移动到指定目录中
（1）方法一：
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右击压缩文件，选择Move to
（2）方法二：
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mv [源文件路径] [目标目录路径]
其中，[源文件路径]表示要移动的文件所在位置及名称；[目标目录路径]表示要移动到的目标目录的完整路径。
例如：若要将当前工作目录下的file.txt文件移动到/home/user/Documents目录中，则可以运行以下命令：
mv file.txt /home/user/Documents
若要将/var/www/html目录下的index.php文件移动到/tmp目录中，则可以运行以下命令：
mv /var/www/html/index.php /tmp
3.进入"pycharm-2021.3"文件夹，找到bin文件夹并进入
4.在bin文件夹里面找到pycharm.sh和pycharm64.vmoptions这2个文件，其中pycharm.sh是运行文件，pycharm64.vmoptions是配置文件
1.先修改一下配置文件 pycharm64.vmoptions：
（1）先下载fineagent.jar，并将其放在【/home/用户名/】目录下：我这里用户名为xh。（fineagent.jar和后面的激活码我都会上传到这篇博客的资源里面，大家进行下载即可），将下载的fineagent.jar文件复制进【/home/用户名/】目录下即可
（2）将下面这段代码添加到 pycharm64.vmoptions里面， 注：-javaagent: 后面加的是文件fineagent.jar的路径：
首先输入以下命令编辑pycharm64.vmoptions文件：
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gredit pycharm64.vmoptions然后向里面添加以下代码，点击save：
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-javaagent:/home/用户名/fineagent.jar
2.配置好 pycharm64.vmoptions文件后，就运行pycharm.sh文件：当出现pycharm安装界面，说明配置成功
5.根据弹窗来的pycharm安装界面，进行安装
输入激活码：
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到了这里就表明Ubuntu中安装pycharm的专业版就成功了！