你如何在python中读取打印数据？

Question

Let's say I wrote the following python script:

print("Hello")
print("Line 2")
print("Goodbye")

The output would of course be:

Hello
Line 2
Goodbye

After printing this data is there any way I could read it? In other words, can you read printed data with python?

Answer 1

You can use os.popen . First, create your script:

practice_script.py:

print("Hello")
print("Line 2")
print("Goodbye")

Then, in another script (or the interactive environment):

import os
print([i.strip('\n') for i in os.popen('python practice_script.py')])

Output:

['Hello', 'Line 2', 'Goodbye']

Answer 2

import subprocess

def system_call(command):
    p = subprocess.Popen([command], stdout=subprocess.PIPE, shell=True)
    return p.stdout.read()

This function will take a command as input and can be used as follows:

output = str(system_call('python my_script.py'))

This can be used for mutli-line outputs and the entire output is stored in the string output