CODEWITHSUNDEEP
pythonpython-3.xfile-iopycharmuser-input
mach3
mach3

Reputation: 127

How to fix 'RuntimeError: input(): lost sys.stdin' error in python 3.7

I am practicing some codes and seemingly out of nowhere i have got this error when I ran a very usual piece of code. The problem i am solving takes input, calculates something and gives an output.

I was running it on an online IDE (some coding contest site) and since it wasn't very good(no surprises there!) i decided to run it on the Pycharm Community Edition and then copy paste it over there. Instead of giving me an output, it showed this, 

Traceback (most recent call last):
  File "D:\Software\lib\io.py", line 52, in <module>
  File "D:\practice\abc.py", line 1, in <module>
RuntimeError: input(): lost sys.stdin

Process finished with exit code -1073740791 (0xC0000409)

the code i tried to run was this,

tc = int(input())
while tc > 0:
    c = 0
    a = int(input())

    while a > 0:
        print(a % 2)
        if (a % 2 == 0):
            a = a // 2
            c += a
    print(c, "is c")

    tc -= 1

this may or may not be helpful, but i don't know what's wrong.

Upvotes: 10

Views: 37373

Answers (9)

user22129992
user22129992

Reputation: 1

This error appeared to me when I tried to convert it to .exe. This happened because I was using "--windowed" when I wanted to run it in a terminal

Upvotes: 0

dream-blue
dream-blue

Reputation: 167

when you write input() in your code, use pyinstaller compiler the .py file, without -w args. here is the example command line:

pyinstaller -F demo.py

that works fo me

Upvotes: 1

Ta_PegandoFogo
Ta_PegandoFogo

Reputation: 1

I was having the same problem but it solved it when I changed the encoding to UTF-8.

Upvotes: 0

TwilightTime
TwilightTime

Reputation: 1

I fixed the same error in Visual Studio "Python" by Project > Properties then unclicking the "Windows Application" checkbox

Upvotes: 0

spandan Bhattarai
spandan Bhattarai

Reputation: 16

this might sound stupid but try closing your idle not directly from exit button but, like if you using windows close it from task manager and liekwise in other os. and try reopening it, even if it didn't worked, try restarting your pc, this really sounds basic and stupid but it really works(at least it worked for me, and also worked for a friend to whom i advised this)

Upvotes: -1

grego
grego

Reputation: 199

The problem could relate to your code editor / Python window. The QGIS Python console, for example, doesn't have stdin or stdout, so you would get the 'RuntimeError: input(): lost sys.stdin' error if running your code there.

See this post: https://gis.stackexchange.com/questions/343250/error-when-using-input-pyqgis-runtimeerror-input-lost-sys-stdin-qgis-3

Upvotes: 4

Lucian
Lucian

Reputation: 561

I ran into this problem randomly from inside a cygwin window for the 'twine' package. Restarting cygwin and doing exactly the same thing again fixed the problem. No idea what the underlying issue is, and 'turn it off and on again' seems like prosaic advice but... try turning it off and on again.

Upvotes: 1

demirbilek
demirbilek

Reputation: 351

I was searching solution for same problem . I found this question, so I will leave the solution which worked for my problem to help the other people who has the same issue.

Instead of using input() command I've used sys.argv[1] with this command I provide input for my program from command line like mpirun -n 4 python -m deneme.py 1000000. In this case 1000000 is my input.

Upvotes: 3

mach3
mach3

Reputation: 127

I moved it to another folder and it is working fine. Other files in the old folder used to work fine, now they don't. Is this an error relating to OS?

Upvotes: 1

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