再也不用修改hosts文件了（C:WindowsSystem32driversetc）
参考：https://blog.csdn.net/mmwalker/article/details/80464351
pycharm真的是很好用，官网下载的pycharm仅有30天试用期，为避免天天提醒试用到期，现有两种方法可以激活：
方法一 花钱买激活，该方法不再累述。
方法二 免费激活
激活方法：
1
下载JetbrainsCrack-2.7-release-str.jar 并将 JetbrainsCrack-2.7-release-str.jar 放置到 E盘根目录。下载地址链接：
https://pan.baidu.com/s/1M5D4lMvRHXQUCZoqviGRrg 密码：vr95
2
在 Pycharm安装目录的bin目录下找到 pycharm.exe.vmoptions 和 pycharm64.exe.vmoptions ,用记事本打开，同时在两个文件最后追加下述代码
-javaagent:E:/JetbrainsCrack-2.7-release-str.jar1
然后保存。
3
启动pycahrm, help——register ——activation code 即激活码激活，输入如下内容激活
ThisCrackLicenseId-{"licenseId":"11011","licenseeName":"python","assigneeName":"mmwalker","assigneeEmail":"2064606669@qq.com","licenseRestriction":"python","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}1234567891011121314151617181920212223243步完成，即可完成激活，时间到2099年。谢谢阅读！
