使用python获取系统所有进程PID以及进程名称
psutil模块中提供了进程管理方法，引用其中的几个方法就能够获得进程的相关信息。简单写个小脚本测试一下，顺便看看我的Mac中到底运行着多少个进程，进程都是什么。
代码：
1 #!/usr/bin/python
2
3 import psutil
4
5 pids = psutil.pids()
6 for pid in pids:
7 p = psutil.Process(pid)
8 print("pid-%d,pname-%s" %(pid,p.name()))
9
10
运行结果如下：
GreydeMac-mini:01_系统基础信息模块详解 greyzhang$ python pid.py
pid-1633,pname-Python
pid-1631,pname-AddressBookSourceSync
pid-1606,pname-mdworker
pid-1588,pname-Java Updater
pid-1586,pname-mdworker
pid-1585,pname-mdworker
pid-1584,pname-mdworker
pid-1565,pname-ocspd
pid-1562,pname-cupsd
pid-1470,pname-distnoted
pid-1468,pname-secinitd
pid-1467,pname-com.apple.geod
pid-1373,pname-mdworker
pid-1357,pname-printtool
pid-1353,pname-com.apple.appkit.xpc.openAndSavePanelService
pid-1349,pname-Pages
pid-1303,pname-com.apple.appkit.xpc.openAndSavePanelService
pid-1209,pname-Numbers
pid-1144,pname-CoreServicesUIAgent
pid-1138,pname-com.apple.CommerceKit.TransactionService
pid-1126,pname-mdworker
pid-1124,pname-mdworker
pid-1122,pname-AssetCacheLocatorService
pid-1116,pname-com.apple.CommerceKit.StoreAEService
pid-1103,pname-com.apple.CommerceKit.TransactionService
pid-1102,pname-com.apple.CommerceKit.TransactionService
pid-1099,pname-com.apple.appstore.PluginXPCService
pid-1098,pname-storeuid
pid-1051,pname-syspolicyd
pid-804,pname-USBAgent
pid-785,pname-mdworker
pid-784,pname-mdworker
pid-755,pname-bash
pid-754,pname-login
……
……
……
pid-60,pname-mds
pid-59,pname-warmd
pid-57,pname-airportd
pid-53,pname-logd
pid-49,pname-mobileassetd
pid-48,pname-powerd
pid-47,pname-configd
pid-46,pname-appleeventsd
pid-43,pname-mediaremoted
pid-41,pname-fseventsd
pid-40,pname-kextd
pid-39,pname-uninstalld
pid-37,pname-syslogd
pid-36,pname-UserEventAgent
pid-1,pname-launchd
number of PIDs: 260
轻松获取了系统中的进程清单，统计完之后共有260个进程。