CODEWITHSUNDEEP
python
Denny Dharmawan
Denny Dharmawan

Reputation: 177

Python command line (too few arguments)

I have a problem with my python system call. I have set up my python, path and pathext.

These commands work on my computer

run.py
python runWithParamater.py parameterExample.txt

but if I run:

runWithParamater.py parameterExample.txt

The interpreter will return "error: too few arguments".

Could anyone tell me what I'm missing?

Upvotes: 2

Views: 7519

Answers (3)

Denny Dharmawan
Denny Dharmawan

Reputation: 177

I missed #!C:/Anaconda/python.exe(running on windows). By adding it, my arguments are counted correctly (without decreasing one if I don't use python.exe on my command)

Is there any possible solution without changing the code though? I got these scripts from a library and the default one is : "#!/usr/bin/env python". It's quite a cumbersome thing to do to add that line into all the scripts.

Upvotes: 0

A.J. Uppal
A.J. Uppal

Reputation: 19264

Your program runWithParameter.py needs #!/usr/bin/env python at the top of it. Then, in your shell, type chmod +x runWithParameter.py. From there, you can simply type runWithParameter.py and it will run.

Example:

foo.py:

#!/usr/bin/env python
print 'Hello World'

And depending on your $PATH, you can type foo.py to run it. Else, you will have to precede it with ./

bash-3.2$ chmod +x foo.py
bash-3.2$ ./foo.py
Hello World
bash-3.2$

Or, if you are going to be running this function locally, you can define a function:

bash-3.2$ function foo.py(){
> ./foo.py
> }
bash-3.2$ foo.py
Hello World
bash-3.2$

Upvotes: 1

Malik Brahimi
Malik Brahimi

Reputation: 16711

Your runWithParameter.py probably expects 3 arguments including python.

Upvotes: 3

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