os.system(sys.executable+" "+sys.prefix+"/bin/"+arg)
This is part of the pip console app that comes with qpython for android
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Ricky Wilson
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`os.system("".join([sys.executable, " ", sys.prefix, "/bin/", arg]))` ? – Nir Alfasi Nov 21 '17 at 18:07
2 Answers
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A better way might be to use subprocess.run and os.path.join:
from subprocess import run
from os.path import join
from sys import executable, prefix
run([executable, join(prefix, 'bin', arg)])
The interface is much cleaner and more robust. It also offers much more control over how the process is called.
Notice that you can use a list for the arguments instead of artificially concatenating them. This makes life much easier if the path contains a space.
Mad Physicist
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I think this is more pythonic but still needs something.
def modcmd(arg):
exe = sys.executable + ' '
prefix = sys.prefix + '/bin/'
cmd = exe + prefix + arg
os.system('clear')
os.system(cmd)
Ricky Wilson
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This function is ran in a REPL. I like to clear the screen before displaying the output of the next command. – Ricky Wilson Nov 21 '17 at 20:06
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2I don't think this is more Pythonic: you are still using the same function and constructing paths using string concatenation. – Mad Physicist Nov 21 '17 at 20:12
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2The documentation for `os.system` itself recommends using the `subprocess` module instead. – chepner Nov 21 '17 at 20:13
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@RickyWilson. It is not prettier. It obfuscates the code in subtle ways, e.g. `exe` has a space in it. And more Pythonic is not synonymous with prettier. – Mad Physicist Nov 21 '17 at 20:16
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I will replace os.system with subprocess as recommended. I felt dirty using it anyway. – Ricky Wilson Nov 21 '17 at 20:17