如何从Python中的字符串中筛选出数据？
我有一个通过PowerShell运行WMI查询的程序，获取输出并将其存储在字符串中，然后打印出来。当我运行它时，我得到了这一小块文本。我可以识别我想要的值(Name、SensorType和Value)。但里面还有一堆垃圾。
b'\r\n\r\n__GENUS : 2\r\n__CLASS : Sensor\r\n__SUPERCLASS : \r\n__DYNASTY : \r\n__RELPATH : \r\n__PROPERTY_COUNT : 3\r\n__DERIVATION : {}\r\n__SERVER : \r\n__NAMESPACE : \r\n__PATH : \r\nName : Memory\r\nSensorType : Load\r\nValue : 40.99033\r\nPSComputerName : \r\n\r\n__GENUS : 2\r\n__CLASS : Sensor\r\n__SUPERCLASS : \r\n__DYNASTY : \r\n__RELPATH : \r\n__PROPERTY_COUNT : 3\r\n__DERIVATION : {}\r\n__SERVER : \r\n__NAMESPACE : \r\n__PATH : \r\nName : CPU Core #2\r\nSensorType : Temperature\r\nValue : 62\r\nPSComputerName : \r\n\r\n__GENUS : 2\r\n__CLASS : Sensor\r\n__SUPERCLASS : \r\n__DYNASTY : \r\n__RELPATH : \r\n__PROPERTY_COUNT : 3\r\n__DERIVATION : {}\r\n__SERVER : \r\n__NAMESPACE : \r\n__PATH : \r\nName : Used Space\r\nSensorType : Load\r\nValue : 92.39651\r\nPSComputerName : \r\n\r\n__GENUS : 2\r\n__CLASS : Sensor\r\n__SUPERCLASS : \r\n__DYNASTY : \r\n__RELPATH : \r\n__PROPERTY_COUNT : 3\r\n__DERIVATION : {}\r\n__SERVER : \r\n__NAMESPACE : \r\n__PATH : \r\nName : CPU Core #1\r\nSensorType : Temperature\r\nValue : 62\r\nPSComputerName : \r\n\r\n__GENUS : 2\r\n__CLASS : Sensor\r\n__SUPERCLASS : \r\n__DYNASTY : \r\n__RELPATH : \r\n__PROPERTY_COUNT : 3\r\n__DERIVATION : {}\r\n__SERVER : \r\n__NAMESPACE : \r\n__PATH : \r\nName : CPU DRAM\r\nSensorType : Power\r\nValue : 1.471058\r\nPSComputerName : \r\n\r\n__GENUS : 2\r\n__CLASS : Sensor\r\n__SUPERCLASS : \r\n__DYNASTY : \r\n__RELPATH : \r\n__PROPERTY_COUNT : 3\r\n__DERIVATION : {}\r\n__SERVER : \r\n__NAMESPACE : \r\n__PATH : \r\nName : CPU Core #2\r\nSensorType : Load\r\nValue : 55.46875\r\nPSComputerName : \r\n\r\n__GENUS : 2\r\n__CLASS : Sensor\r\n__SUPERCLASS : \r\n__DYNASTY : \r\n__RELPATH : \r\n__PROPERTY_COUNT : 3\r\n__DERIVATION : {}\r\n__SERVER : \r\n__NAMESPACE : \r\n__PATH : \r\nName : CPU Package\r\nSensorType : Power\r\nValue : 12.19472\r\nPSComputerName : \r\n\r\n__GENUS : 2\r\n__CLASS : Sensor\r\n__SUPERCLASS : \r\n__DYNASTY : \r\n__RELPATH : \r\n__PROPERTY_COUNT : 3\r\n__DERIVATION : {}\r\n__SERVER : \r\n__NAMESPACE : \r\n__PATH : \r\nName : Bus Speed\r\nSensorType : Clock\r\nValue : 100.0001\r\nPSComputerName : \r\n\r\n__GENUS : 2\r\n__CLASS : Sensor\r\n__SUPERCLASS : \r\n__DYNASTY : \r\n__RELPATH : \r\n__PROPERTY_COUNT : 3\r\n__DERIVATION : {}\r\n__SERVER : \r\n__NAMESPACE : \r\n__PATH : \r\nName : CPU Total\r\nSensorType : Load\r\nValue : 51.5625\r\nPSComputerName : \r\n\r\n__GENUS : 2\r\n__CLASS : Sensor\r\n__SUPERCLASS : \r\n__DYNASTY : \r\n__RELPATH : \r\n__PROPERTY_COUNT : 3\r\n__DERIVATION : {}\r\n__SERVER : \r\n__NAMESPACE : \r\n__PATH : \r\nName : CPU Package\r\nSensorType : Temperature\r\nValue : 62\r\nPSComputerName : \r\n\r\n__GENUS : 2\r\n__CLASS : Sensor\r\n__SUPERCLASS : \r\n__DYNASTY : \r\n__RELPATH : \r\n__PROPERTY_COUNT : 3\r\n__DERIVATION : {}\r\n__SERVER : \r\n__NAMESPACE : \r\n__PATH : \r\nName : CPU Core #2\r\nSensorType : Clock\r\nValue : 3100.004\r\nPSComputerName : \r\n\r\n__GENUS : 2\r\n__CLASS : Sensor\r\n__SUPERCLASS : \r\n__DYNASTY : \r\n__RELPATH : \r\n__PROPERTY_COUNT : 3\r\n__DERIVATION : {}\r\n__SERVER : \r\n__NAMESPACE : \r\n__PATH : \r\nName : Temperature\r\nSensorType : Temperature\r\nValue : 34\r\nPSComputerName : \r\n\r\n__GENUS : 2\r\n__CLASS : Sensor\r\n__SUPERCLASS : \r\n__DYNASTY : \r\n__RELPATH : \r\n__PROPERTY_COUNT : 3\r\n__DERIVATION : {}\r\n__SERVER : \r\n__NAMESPACE : \r\n__PATH : \r\nName : Used Memory\r\nSensorType : Data\r\nValue : 3.240162\r\nPSComputerName : \r\n\r\n__GENUS : 2\r\n__CLASS : Sensor\r\n__SUPERCLASS : \r\n__DYNASTY : \r\n__RELPATH : \r\n__PROPERTY_COUNT : 3\r\n__DERIVATION : {}\r\n__SERVER : \r\n__NAMESPACE : \r\n__PATH : \r\nName : Available Memory\r\nSensorType : Data\r\nValue : 4.664536\r\nPSComputerName : \r\n\r\n__GENUS : 2\r\n__CLASS : Sensor\r\n__SUPERCLASS : \r\n__DYNASTY : \r\n__RELPATH : \r\n__PROPERTY_COUNT : 3\r\n__DERIVATION : {}\r\n__SERVER : \r\n__NAMESPACE : \r\n__PATH : \r\nName : CPU Core #1\r\nSensorType : Clock\r\nValue : 3100.004\r\nPSComputerName : \r\n\r\n__GENUS : 2\r\n__CLASS : Sensor\r\n__SUPERCLASS : \r\n__DYNASTY : \r\n__RELPATH : \r\n__PROPERTY_COUNT : 3\r\n__DERIVATION : {}\r\n__SERVER : \r\n__NAMESPACE : \r\n__PATH : \r\nName : CPU Cores\r\nSensorType : Power\r\nValue : 7.794704\r\nPSComputerName : \r\n\r\n__GENUS : 2\r\n__CLASS : Sensor\r\n__SUPERCLASS : \r\n__DYNASTY : \r\n__RELPATH : \r\n__PROPERTY_COUNT : 3\r\n__DERIVATION : {}\r\n__SERVER : \r\n__NAMESPACE : \r\n__PATH : \r\nName : CPU Graphics\r\nSensorType : Power\r\nValue : 2.226472\r\nPSComputerName : \r\n\r\n__GENUS : 2\r\n__CLASS : Sensor\r\n__SUPERCLASS : \r\n__DYNASTY : \r\n__RELPATH : \r\n__PROPERTY_COUNT : 3\r\n__DERIVATION : {}\r\n__SERVER : \r\n__NAMESPACE : \r\n__PATH : \r\nName : CPU Core #1\r\nSensorType : Load\r\nValue : 47.65625\r\nPSComputerName : \r\n\r\n\r\n\r\n'
下面是PowerShell脚本，
function NSV(){
$computer = "LocalHost"
$namespace = "root\OpenHardwareMonitor"
$property1 = "Name"
$property2 = "SensorType"
$property3 = "Value"
Get-WmiObject -class Sensor -computername $computer -namespace $namespace -Property $property1,$property2,$property3
}这是Python脚本
import subprocess
p = subprocess.Popen(["C:\\WINDOWS\\system32\\WindowsPowerShell\\v1.0\\powershell.exe", ". \"./TestScript\";", "&NSV"], stdout=subprocess.PIPE)
(output, err) = p.communicate()
print (output)回答 2
Stack Overflow用户
发布于 2018-08-07 15:34:42
你可以试试正则表达式，像这样：
import re
for match in re.finditer('SensorType', str(yourstring)):
print("%s: %s" % (match.start(), match.group()))文件：https://docs.python.org/3/library/re.html
Stack Overflow用户
发布于 2018-08-07 16:39:53
可以将二进制文本放入字符串中，在换行符处拆分，并筛选以指定内容开头的字符串：
import subprocess
p = subprocess.Popen(["C:\\WINDOWS\\system32\\WindowsPowerShell\\v1.0\\powershell.exe", ". \"./TestScript\";", "&NSV"], stdout=subprocess.PIPE)
(output, err) = p.communicate()
data = str(output)
# data =str(b'\r\n\r\n__GENUS : 2\r\n__CLASS : Sensor\r\n__SUPERCLASS : \r\n__DYNASTY : \r\n__RELPATH : \r\n__PROPERTY_COUNT : 3\r\n__DERIVATION : {}\r\n__SERVER : \r\n__NAMESPACE : \r\n__PATH : \r\nName : Memory\r\nSensorType : Load\r\nValue : 40.99033\r\nPSComputerName : \r\n\r\n__GENUS : 2\r\n__CLASS : Sensor\r\n__SUPERCLASS : \r\n__DYNASTY : \r\n__RELPATH : \r\n__PROPERTY_COUNT : 3\r\n__DERIVATION : {}\r\n__SERVER : \r\n__NAMESPACE : \r\n__PATH : \r\nName : CPU Core #2\r\nSensorType : Temperature\r\nValue : 62\r\nPSComputerName : \r\n\r\n__GENUS : 2\r\n__CLASS : Sensor\r\n__SUPERCLASS : \r\n__DYNASTY : \r\n__RELPATH : \r\n__PROPERTY_COUNT : 3\r\n__DERIVATION : {}\r\n__SERVER : \r\n__NAMESPACE : \r\n__PATH : \r\nName : Used Space\r\nSensorType : Load\r\nValue : 92.39651\r\nPSComputerName : \r\n\r\n__GENUS : 2\r\n__CLASS : Sensor\r\n__SUPERCLASS : \r\n__DYNASTY : \r\n__RELPATH : \r\n__PROPERTY_COUNT : 3\r\n__DERIVATION : {}\r\n__SERVER : \r\n__NAMESPACE : \r\n__PATH : \r\nName : CPU Core #1\r\nSensorType : Temperature\r\nValue : 62\r\nPSComputerName : \r\n\r\n__GENUS : 2\r\n__CLASS : Sensor\r\n__SUPERCLASS : \r\n__DYNASTY : \r\n__RELPATH : \r\n__PROPERTY_COUNT : 3\r\n__DERIVATION : {}\r\n__SERVER : \r\n__NAMESPACE : \r\n__PATH : \r\nName : CPU DRAM\r\nSensorType : Power\r\nValue : 1.471058\r\nPSComputerName : \r\n\r\n__GENUS : 2\r\n__CLASS : Sensor\r\n__SUPERCLASS : \r\n__DYNASTY : \r\n__RELPATH : \r\n__PROPERTY_COUNT : 3\r\n__DERIVATION : {}\r\n__SERVER : \r\n__NAMESPACE : \r\n__PATH : \r\nName : CPU Core #2\r\nSensorType : Load\r\nValue : 55.46875\r\nPSComputerName : \r\n\r\n__GENUS : 2\r\n__CLASS : Sensor\r\n__SUPERCLASS : \r\n__DYNASTY : \r\n__RELPATH : \r\n__PROPERTY_COUNT : 3\r\n__DERIVATION : {}\r\n__SERVER : \r\n__NAMESPACE : \r\n__PATH : \r\nName : CPU Package\r\nSensorType : Power\r\nValue : 12.19472\r\nPSComputerName : \r\n\r\n__GENUS : 2\r\n__CLASS : Sensor\r\n__SUPERCLASS : \r\n__DYNASTY : \r\n__RELPATH : \r\n__PROPERTY_COUNT : 3\r\n__DERIVATION : {}\r\n__SERVER : \r\n__NAMESPACE : \r\n__PATH : \r\nName : Bus Speed\r\nSensorType : Clock\r\nValue : 100.0001\r\nPSComputerName : \r\n\r\n__GENUS : 2\r\n__CLASS : Sensor\r\n__SUPERCLASS : \r\n__DYNASTY : \r\n__RELPATH : \r\n__PROPERTY_COUNT : 3\r\n__DERIVATION : {}\r\n__SERVER : \r\n__NAMESPACE : \r\n__PATH : \r\nName : CPU Total\r\nSensorType : Load\r\nValue : 51.5625\r\nPSComputerName : \r\n\r\n__GENUS : 2\r\n__CLASS : Sensor\r\n__SUPERCLASS : \r\n__DYNASTY : \r\n__RELPATH : \r\n__PROPERTY_COUNT : 3\r\n__DERIVATION : {}\r\n__SERVER : \r\n__NAMESPACE : \r\n__PATH : \r\nName : CPU Package\r\nSensorType : Temperature\r\nValue : 62\r\nPSComputerName : \r\n\r\n__GENUS : 2\r\n__CLASS : Sensor\r\n__SUPERCLASS : \r\n__DYNASTY : \r\n__RELPATH : \r\n__PROPERTY_COUNT : 3\r\n__DERIVATION : {}\r\n__SERVER : \r\n__NAMESPACE : \r\n__PATH : \r\nName : CPU Core #2\r\nSensorType : Clock\r\nValue : 3100.004\r\nPSComputerName : \r\n\r\n__GENUS : 2\r\n__CLASS : Sensor\r\n__SUPERCLASS : \r\n__DYNASTY : \r\n__RELPATH : \r\n__PROPERTY_COUNT : 3\r\n__DERIVATION : {}\r\n__SERVER : \r\n__NAMESPACE : \r\n__PATH : \r\nName : Temperature\r\nSensorType : Temperature\r\nValue : 34\r\nPSComputerName : \r\n\r\n__GENUS : 2\r\n__CLASS : Sensor\r\n__SUPERCLASS : \r\n__DYNASTY : \r\n__RELPATH : \r\n__PROPERTY_COUNT : 3\r\n__DERIVATION : {}\r\n__SERVER : \r\n__NAMESPACE : \r\n__PATH : \r\nName : Used Memory\r\nSensorType : Data\r\nValue : 3.240162\r\nPSComputerName : \r\n\r\n__GENUS : 2\r\n__CLASS : Sensor\r\n__SUPERCLASS : \r\n__DYNASTY : \r\n__RELPATH : \r\n__PROPERTY_COUNT : 3\r\n__DERIVATION : {}\r\n__SERVER : \r\n__NAMESPACE : \r\n__PATH : \r\nName : Available Memory\r\nSensorType : Data\r\nValue : 4.664536\r\nPSComputerName : \r\n\r\n__GENUS : 2\r\n__CLASS : Sensor\r\n__SUPERCLASS : \r\n__DYNASTY : \r\n__RELPATH : \r\n__PROPERTY_COUNT : 3\r\n__DERIVATION : {}\r\n__SERVER : \r\n__NAMESPACE : \r\n__PATH : \r\nName : CPU Core #1\r\nSensorType : Clock\r\nValue : 3100.004\r\nPSComputerName : \r\n\r\n__GENUS : 2\r\n__CLASS : Sensor\r\n__SUPERCLASS : \r\n__DYNASTY : \r\n__RELPATH : \r\n__PROPERTY_COUNT : 3\r\n__DERIVATION : {}\r\n__SERVER : \r\n__NAMESPACE : \r\n__PATH : \r\nName : CPU Cores\r\nSensorType : Power\r\nValue : 7.794704\r\nPSComputerName : \r\n\r\n__GENUS : 2\r\n__CLASS : Sensor\r\n__SUPERCLASS : \r\n__DYNASTY : \r\n__RELPATH : \r\n__PROPERTY_COUNT : 3\r\n__DERIVATION : {}\r\n__SERVER : \r\n__NAMESPACE : \r\n__PATH : \r\nName : CPU Graphics\r\nSensorType : Power\r\nValue : 2.226472\r\nPSComputerName : \r\n\r\n__GENUS : 2\r\n__CLASS : Sensor\r\n__SUPERCLASS : \r\n__DYNASTY : \r\n__RELPATH : \r\n__PROPERTY_COUNT : 3\r\n__DERIVATION : {}\r\n__SERVER : \r\n__NAMESPACE : \r\n__PATH : \r\nName : CPU Core #1\r\nSensorType : Load\r\nValue : 47.65625\r\nPSComputerName : \r\n\r\n\r\n\r\n')
whatIwant = ["Name","SensorType","Value"]
d = [ q for q in data.split("\r\n") if any(q.startswith(k) for k in whatIwant)]
# put every len(whatIwant ) items into one sublist
step = len(whatIwant)
dd = [d[i:i+step] for i in range(0,len(d),step)]
for k in dd:
print(k)输出：
['Name : Memory', 'SensorType : Load', 'Value : 40.99033']
['Name : CPU Core #2', 'SensorType : Temperature', 'Value : 62']
['Name : Used Space', 'SensorType : Load', 'Value : 92.39651']
['Name : CPU Core #1', 'SensorType : Temperature', 'Value : 62']
['Name : CPU DRAM', 'SensorType : Power', 'Value : 1.471058']
['Name : CPU Core #2', 'SensorType : Load', 'Value : 55.46875']
['Name : CPU Package', 'SensorType : Power', 'Value : 12.19472']
['Name : Bus Speed', 'SensorType : Clock', 'Value : 100.0001']
['Name : CPU Total', 'SensorType : Load', 'Value : 51.5625']
['Name : CPU Package', 'SensorType : Temperature', 'Value : 62']
['Name : CPU Core #2', 'SensorType : Clock', 'Value : 3100.004']
['Name : Temperature', 'SensorType : Temperature', 'Value : 34']
['Name : Used Memory', 'SensorType : Data', 'Value : 3.240162']
['Name : Available Memory', 'SensorType : Data', 'Value : 4.664536']
['Name : CPU Core #1', 'SensorType : Clock', 'Value : 3100.004']
['Name : CPU Cores', 'SensorType : Power', 'Value : 7.794704']
['Name : CPU Graphics', 'SensorType : Power', 'Value : 2.226472']
['Name : CPU Core #1', 'SensorType : Load', 'Value : 47.65625']https://stackoverflow.com/questions/-100005929
复制相似问题
腾讯云开发者
