Use python to calculate the CPU and Memory usage of a process in the top Command

In performance tests, top commands are often used to monitor the CPU and memory usage of a process over a period of time. Output to the file once every 10 seconds. The following code processes the output top file and obtains the CPU utilization. memory has the largest, minimum, and average value. Topfile = raw_input ("please input the topfile path :")
Try:
Top = open (topfile, "r ")
Handle t IOError:
Print "No such file, please check your input"
Cpulist = []
Memorylist = [] print "#" * 50
Print "1. if you want to get the max cpu and memory, please input toptest. getMaxValue () \ n"
Print "2. if you want to get the min cpu and memory, please input toptest. getMinValue () \ n"
Print "3. if you want to get the average cpu and memory, please input toptest. getAvgValue () \ n"
Print "#" * 50 # get the max value of CPU and memory

Def getMaxValue ():
CpuPid = int (raw_input ("please input the pid :"))
# Print cpuPid
LineList = top. readlines ()
Length = len (lineList)
For I in range (0, length ):
Try:
Pid = int (lineList [I] [: 6])
# Print "pid =" + str (pid), "cpuPid =" + str (cpuPid)
If pid = cpuPid:
# Print "#" * 10
# Print float (lineList [I] [55: 60])
Cpulist. append (float (lineList [I] [55: 60])
Memorylist. append (float (lineList [I] [29:33])
Else:
"It is not a pid line"
Failed t ValueError:
"Print the valueError"
Print "the max CPU use is:" + str (max (cpulist) + "%"
Print "the max Memory use is:" + str (max (Memorylist ))

# Get the mim value of CPU and memorydef getMinValue ():
Print "the min CPU use is:" + str (min (cpulist) + "%"
Print "the max Memory use is:" + str (min (Memorylist) def getAvgValue ():
Print "the average CPU use is:" + str (float (sum (cpulist)/len (cpulist) + "%"
Print "the average Memory use is:" + str (float (sum (Memorylist)/len (Memorylist ))