Ad:

Python Discussion Thread
Unsolved
Views: 865

Nov 21st, 2008

executing scripts via command line

Expand Post »

Hello!

I'm trying to execute a simple script in the command line, and for some reason, it's not working. Shouldn't it be as simple as this?

Python Syntax (Toggle Plain Text)

python myscript.py

And yet when I try that, I get "Syntax Error: invalid syntax"

I've googled around, read through the docs--I have a feeling that this is probably something silly/small. Any help?

Thanks!

Similar Threads

libgpod3 + gtkpod in Linux Applications and Software
blank pop-ups in Viruses, Spyware and other Nasties
Hello from Ubuntu in Geeks' Lounge

payne_99

Reputation Points: 10

Solved Threads: 0

Newbie Poster

Offline

2 posts
since Nov 2008

Permalink

Nov 21st, 2008

Re: executing scripts via command line

The syntax error is somewhere in your script. Can you post the script (or attach it) ?

Gribouillis

Reputation Points: 930

Solved Threads: 666

Posting Maven

Offline

2,655 posts
since Jul 2008

Permalink

Nov 21st, 2008

Re: executing scripts via command line

Ah, I see. So the actual command I was trying to execute was

Python Syntax (Toggle Plain Text)

python controller.py

I checked controller.py, and got an error message:

Traceback (most recent call last):
File "C:\Users\p\controller.py", line 3, in <module>
exec "from " + sys.argv[1] + " import *"
IndexError: list index out of range

Here's the script:

Python Syntax (Toggle Plain Text)
import sys
from tichu import *
exec "from " + sys.argv[1] + " import *"
 
def exampleFeatureFunction(hand):
    fv=[0, 0, 0]
    fv[0]=1
    if (hand[DRAGON]>0):
        fv[1]=1.0
    if (hand[PHOENIX]>0):
        fv[2]=1.0
    return fv
 
def alwaysSayNo(hand, model):
    return False
 
if __name__=="__main__":
    if (sys.argv[3]=="baseline"):
        evaluate(sys.argv[2], None, alwaysSayNo)
    elif (sys.argv[3]):
        evaluate(sys.argv[2], sys.argv[3], eval(sys.argv[4]))
import sys
from tichu import *
exec "from " + sys.argv[1] + " import *"

def exampleFeatureFunction(hand):
    fv=[0, 0, 0]
    fv[0]=1
    if (hand[DRAGON]>0):
        fv[1]=1.0
    if (hand[PHOENIX]>0):
        fv[2]=1.0
    return fv

def alwaysSayNo(hand, model):
    return False

if __name__=="__main__":
    if (sys.argv[3]=="baseline"):
        evaluate(sys.argv[2], None, alwaysSayNo)
    elif (sys.argv[3]):
        evaluate(sys.argv[2], sys.argv[3], eval(sys.argv[4]))

There are other files (the "tichu" file it's importing from); let me know if you need to see more.

payne_99

Reputation Points: 10

Solved Threads: 0

Newbie Poster

Offline

2 posts
since Nov 2008

Permalink

Nov 21st, 2008

Re: executing scripts via command line

Your problem is that sys.argv is what you supply on the command line after starting the script. So you would go

python Syntax (Toggle Plain Text)

python mycode.py arg1 arg2

For yours to work you need at least 2 arguments for there to be sys.argv[1]

Paul Thompson

Reputation Points: 264

Solved Threads: 183

Veteran Poster

Offline

1,095 posts
since May 2008

This thread is more than three months old

No one has posted to this discussion for at least three months. Please let old threads die and do not reply to them unless you feel you have something new and valuable to contribute that absolutely must be added to make the discussion complete. Otherwise, please start a new thread in this forum instead.

Previous Thread in Python Forum Timeline: PythonFight

Next Thread in Python Forum Timeline: Passing varyables through a text file

DaniWeb Message

Cancel Changes

User Name
Password