方法一：（亲测可用）
1、打开网址： lookdiv.com
2、在输入框输入钥匙：lookdiv.com
3、点击“获取激活码”按钮，获取激活码
4.激活后可以使用几个月的时间，到时候再重新激活即可
方法二：永久激活（网上转载，未尝试）
1.将下载的JetbrainsCrack-release-enc.jar破解补丁，放到pycharm的bin目录下
2. 、修改pycharm.exe.vmoptions和pycharm64.exe.vmoptions这俩个文件，在这两个文件最后追加 ：
-javaagent:C: uanjianpycharmPyCharm 2018.3.5inJetbrainsCrack-release-enc.jar，最后保存，一定要保存
3.启动pycharm，默认下一步，到激活页面，选择，Activation code后，输入激活码：
ThisCrackLicenseId-{ "licenseId":"11011", "licenseeName":"CSDN",
"assigneeName":"csdn", "assigneeEmail":"3113314975", "licenseRestriction":"",
"checkConcurrentUse":false, "products":[ {"code":"II","paidUpTo":"2099-12-31"},
{"code":"DM","paidUpTo":"2099-12-31"}, {"code":"AC","paidUpTo":"2099-12-31"},
{"code":"RS0","paidUpTo":"2099-12-31"}, {"code":"WS","paidUpTo":"2099-12-31"},
{"code":"DPN","paidUpTo":"2099-12-31"}, {"code":"RC","paidUpTo":"2099-12-31"},
{"code":"PS","paidUpTo":"2099-12-31"}, {"code":"DC","paidUpTo":"2099-12-31"},
{"code":"RM","paidUpTo":"2099-12-31"}, {"code":"CL","paidUpTo":"2099-12-31"},
{"code":"PC","paidUpTo":"2099-12-31"} ], "hash":"2911276/0",
"gracePeriodDays":7, "autoProlongated":false}
4.成功激活，有效期至2100年，美滋滋。