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Python behaves weird with piped input


Python behaves weird with piped input

By : H. Lee
Date : November 22 2020, 03:01 PM
seems to work fine It is a carriage-return and line-feed thing, but you have not provided enough clues to determine the exact problem.
Experiment by adding the following to the end of your strings before using them in a print statement. +'\r' +'\n'
code :


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How do I accept piped input and then user-prompted input in a Python script?

How do I accept piped input and then user-prompted input in a Python script?


By : KM123
Date : March 29 2020, 07:55 AM
wish help you to fix your issue I suspect you're out of luck, at least for any kind of cross-platform solution. Python uses sys.stdin for raw_input(), and if you invoke Python so that sys.stdin is on the receiving end of a pipe, Python can't do anything to magically change sys.stdin to the terminal when the piped input ends.
Here's a variant of the question with a Unix-specific workaround as the accepted answer. That cleverly worms around some (not all) of the problem by changing the way the program is invoked.
code :
import sys
print len(sys.stdin.read()) # anything to consume piped input
sys.stdin = open("CON:", "r")
x = raw_input("sdfklj ")
Passing piped data to Python program and also an input file

Passing piped data to Python program and also an input file


By : Mohamed Anees
Date : March 29 2020, 07:55 AM
I wish this help you From the documentation:
code :
cat file.txt|python script.py -u - configuration.txt
cat file.txt|python script.py -u configuration.txt -
Python - integers as input piped to subprocess.Popen

Python - integers as input piped to subprocess.Popen


By : Antagonii
Date : March 29 2020, 07:55 AM
I hope this helps you . I have a list containing integers and want to direct it to a shell command that creates a histogram from it (see here). , Something like this?
code :
import subprocess

path_to_script = "./echo_script.sh"
numbers = [1, 2 ,3]
numbers_str = ' '.join(str(i) for i in numbers) # should give you '1 2 3'

subprocess.call([path_to_script, numbers_str])
import subprocess

script = "/path/to/script.py"

numbers = [1, 2 ,3]
numbers_str = ' '.join(str(i) for i in numbers) + '\n' # should give you '1 2 3'

proc = subprocess.Popen(script, stdin=subprocess.PIPE, stdout=subprocess.PIPE)
proc.stdin.write(numbers_str)
proc.stdin.close()
print(proc.stdout.read())
Script that calls ausearch behaves differently when piped data on stdin

Script that calls ausearch behaves differently when piped data on stdin


By : leal
Date : March 29 2020, 07:55 AM
around this issue ausearch changes its behavior if stdin is a pipe. If it is it searches through stdin rather than through the audit daemon logs. You can use --input-logs to force it to read from the logs.
code :
echo "blah" | ausearch -i -a 1221217 --input-logs
#!/bin/bash
ausearch -i -a 1221217 < /dev/null
stdin behaves differently when piped and when redirected

stdin behaves differently when piped and when redirected


By : NJR
Date : March 29 2020, 07:55 AM
around this issue There should be no functional difference between those two commands. Indeed, I cannot recreate what you're seeing:
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