[SOLVED] python3 string formatting

[arzgi]

This is driving me nuts, have been banging my head two days, but can't figure it out.

In python3 shell it works as expected:

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$ python3
Python 3.7.3 (default, Apr  3 2019, 05:39:12) 
[GCC 8.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> aika = '21.11.2019 21.44.57'
>>> lampo = '+49.0°C'
>>> f'{aika} {lampo}'
'21.11.2019 21.44.57 +49.0°C'
>>> 

The script I'm working on:

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#!/usr/bin/env python3

import subprocess, time

while True:
    subprocess.call("/home/arto/bin/lampo.sh")
    with open("/tmp/aika") as fa:
        aika = fa.readline()

    with  open("/tmp/lampo") as fl:
        lampo = fl.readline()

    print(f'{aika} {lampo}')

    time.sleep(30)

Output:

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21.11.2019 21.54.21
 +50.0°C

21.11.2019 21.54.28
 +50.0°C

21.11.2019 21.54.37
 +49.0°C

21.11.2019 21.54.51
 +50.0°C

21.11.2019 21.54.58
 +50.0°C

21.11.2019 21.55.07
 +50.0°C

21.11.2019 21.55.21
 +50.0°C

And the bash script, that is launched from python3 script:

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#!/bin/bash

if [ -f /tmp/aika ] 
    then rm /tmp/aika
fi

if [ -f /tmp/lampo ]
    then rm /tmp/lampo
fi

if [ -f /tmp/dd ]
    then rm /tmp/dd
fi

date >> /tmp/dd
cat /tmp/dd | gawk '{print $2, $3}' >> /tmp/aika
sensors | grep 'Core 3:' | gawk '{printf $3"\n"}' >> /tmp/lampo

What is the problem, why can't I get two string variables printed to same line?

[cronoik]

What is the problem, why can't I get two string variables printed to same line?

Calling readlines() will read the whole file line by line (including the newlines!). You need to strip the newlines before printing the results to get them in one line:

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aika = aika.replace('\n', '')

[arzgi]

Thanks cronolk for finding the solution!

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22.11.2019 11.10.36 +42.0°C

22.11.2019 11.11.06 +42.0°C

22.11.2019 11.11.36 +43.0°C

22.11.2019 11.12.06 +44.0°C