Python IDLE subprocess error?

python python-3.x python-idle
James Wanchai picture James Wanchai · May 17, 2009 · Viewed 43.5k times · Source

IDLE's subprocess didn't make connection. Either IDLE can't start a subprocess or personal firewall software is blocking the connection.

Don't think this has been asked-how come this comes up occasionally when running very simple programs-I then have to go to Task Manager & stop all Pythonw processes to get it to work again?

It seems to happen randomnly on different bits of code-here is the one I'm doing at the moment-

f = open('money.txt')
currentmoney = float(f.readline())
print(currentmoney, end='')
howmuch = (float(input('How much did you put in or take out?:')))
now = currentmoney + howmuch
print(now)
f.close()
f = open('money.txt', 'w')
f.write(str(now))
f.close()

Sometimes it works, sometimes it doesn't!

Answer

user1203652 picture user1203652 · Mar 10, 2012

I was getting the same error message. What was causing the problem for me was that I named one of my scripts 'string.py'. Every time I tried to run a script with 'string.py' in the same directory this happened.

Related questions

How do I print colored text in IDLE's terminal?

This is very easily a duplicate question--because it is. However, there are very many inadequate answers to this (e.g. try curses! -- pointing to a 26 page documentation). I just want to print text in a color other than blue …

Read More
No IDLE for Python 3?

I installed Python 3.1 yesterday on my Windows Vista PC, and was surprised to find that the version of IDLE is 2.6.4, for "Python 2.6.4 (r264:75708, Oct 26 2009, 08:23:19) [MSC v.1500 32 bit (Intel)] on win32" I was hoping to use IDLE to investigate some of …

Read More
Convert bytes to a string

I'm using this code to get standard output from an external program: >>> from subprocess import * >>> command_stdout = Popen(['ls', '-l'], stdout=PIPE).communicate()[0] The communicate() method returns an array of bytes: >>> …

Read More