Post

1 Applying Changes

Posted
By EthanWang
1 min read
1 Applying Changes

Command:

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$ cat cpu_usage.py

Code output:

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#!/usr/bin/env python3

import psutil

def check_cpu_usage(percent):

    usage = psutil.cpu_percent()

    return usage < percent

if not check_cpu_usage(75):

    print("ERROR! CPU is overloaded")

else:

    print("Everything ok")

Command:

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$ diff -u cpu_usage.py cpu_usage_new.py > cpu_usage.diff
$ cat cpu_usage.diff

Code output:

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--- cpu_usage.py	2019-06-23 08:16:04.666457429 -0700

+++ cpu_usage_fixed.py	2019-06-23 08:15:37.534370071 -0700

@@ -2,7 +2,8 @@

 import psutil

 

 def check_cpu_usage(percent):

-    usage = psutil.cpu_percent()

+    usage = psutil.cpu_percent(1)

+    print("DEBUG: usage: {}".format(usage))

     return usage < percent

 

 if not check_cpu_usage(75):

Command:

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$ patch cpu_usage.py < cpu_usage.diff

Code output:

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patching file cpu_usage.py

Command:

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$ cat cpu_usage.py

Code output:

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#!/usr/bin/env python3

import psutil

def check_cpu_usage(percent):

    usage = psutil.cpu_percent(1)

    print("DEBUG: usage: {}".format(usage))

    return usage < percent

if not check_cpu_usage(75):

    print("ERROR! CPU is overloaded")

else:

    print("Everything ok")
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