在python 2中如何从字符串中获取子字符串

我试图从字符串中获取子字符串，但必须是特定的，
如果您使用这个函数并打印它，您将得到一个包含所有当前无响应进程及其信息的长字符串，我需要特定进程的PID

r = os.popen('tasklist /FI "STATUS eq Not Responding"').read().strip()  
print r 

例如，如果chrome.exe没有响应，它将在列表中，我希望获得与之关联的PID。我尝试了

split（）

和

pop（）

来挑选我需要的东西，但没有成功

编辑：
我有10多个进程，它们都共享相同的应用程序名称。 我有必要使用PID，并且它属于正确的应用程序。我也不想让我的剧本毁掉一切

因此，简而言之，我需要找到与指定的“process_name”位于同一行的PID，然后只保留该“PID”

---

希望这是有意义的。

我认为有一种方法可以只获取进程pid，但是如果您想知道如何从字符串中提取特定的子字符串，请使用regex

与pid匹配的正则表达式模式：

\w+\.\w+\s+（\d+）\s

输出：

['4024']

基于：

---

通过让tasklist以CSV形式返回列表，您可以简化您的生活：

C:\>tasklist /FI "STATUS eq Not Responding" /FO CSV /NH
"jusched.exe","3596","Console","1","13,352 K"
"chrome.exe","4760","Console","1","181,088 K"
"chrome.exe","3456","Console","1","119,044 K"
"chrome.exe","2432","Console","1","24,236 K"
"chrome.exe","440","Console","1","36,420 K"
"chrome.exe","4964","Console","1","60,596 K"
"chrome.exe","3608","Console","1","21,924 K"
"chrome.exe","4996","Console","1","22,348 K"
"chrome.exe","2580","Console","1","38,432 K"
"chrome.exe","3312","Console","1","32,756 K"
"chrome.exe","4600","Console","1","36,072 K"
"chrome.exe","4180","Console","1","24,436 K"
"chrome.exe","4320","Console","1","31,152 K"
"chrome.exe","4120","Console","1","22,632 K"

通过

csv

模块利用此功能，您现在可以：

>>> r = os.popen('tasklist /FI "STATUS eq Not Responding" /FO CSV')
>>> import csv
>>> reader = csv.DictReader(r, delimiter=',')
>>> rows = list(reader)
>>> rows[0]
{'Session Name': 'Console', 'Mem Usage': '13,352 K', 'PID': '3596', 'Image Name'
: 'jusched.exe', 'Session#': '1'}
>>> rows[0]['PID']
'3596'

---

我去掉了

/NH

开关（无标题）以从csv模块中获取词典。

请发布“包含所有当前无响应进程及其信息的长字符串”，并向我们展示您需要从该字符串中获取的内容。这有帮助吗？工作正常，但是，我似乎无法让它自动从我想要的进程名称中获取PID。我必须指定行的#。假设第7行上的进程名为fun.exe，我只想要与“fun.exe”关联的PID，这怎么办？

C:\>tasklist /FI "STATUS eq Not Responding" /FO CSV /NH
"jusched.exe","3596","Console","1","13,352 K"
"chrome.exe","4760","Console","1","181,088 K"
"chrome.exe","3456","Console","1","119,044 K"
"chrome.exe","2432","Console","1","24,236 K"
"chrome.exe","440","Console","1","36,420 K"
"chrome.exe","4964","Console","1","60,596 K"
"chrome.exe","3608","Console","1","21,924 K"
"chrome.exe","4996","Console","1","22,348 K"
"chrome.exe","2580","Console","1","38,432 K"
"chrome.exe","3312","Console","1","32,756 K"
"chrome.exe","4600","Console","1","36,072 K"
"chrome.exe","4180","Console","1","24,436 K"
"chrome.exe","4320","Console","1","31,152 K"
"chrome.exe","4120","Console","1","22,632 K"

>>> r = os.popen('tasklist /FI "STATUS eq Not Responding" /FO CSV')
>>> import csv
>>> reader = csv.DictReader(r, delimiter=',')
>>> rows = list(reader)
>>> rows[0]
{'Session Name': 'Console', 'Mem Usage': '13,352 K', 'PID': '3596', 'Image Name'
: 'jusched.exe', 'Session#': '1'}
>>> rows[0]['PID']
'3596'