Passing a number to a python script

February 16, 2023

I am working in Linux using Ansible.
I am trying to run a script from a playbook, but I need to pass the script a few arguments: a string and 2 numbers. The first number is the number of times I need to retry to run the script, the second number variable is the retry attempt (which comes from a implement retry counter).

cat playbook.yml

---

- name: Increment variable
      ansible.builtin.set_fact:
        attempt_number: "{{ attempt_number | d(0) | int + 1 }}"

- name: Running Script
      command: "{{ my_dir }}/script.py {{ string }} {{ max_retries }} {{ attempt_number | int }}"

The python script looks like this:
cat script.py

var1=sys.argv[0]
var2=sys.argv[1]
var3=sys.argv[2]

print "String %s" % var1
print "Num1 %d" % var2
print "Num2 %d" % var3

First I am just trying to check If the variable are being passed to the python script but I am getting this error:

" File "", line 6, in ", "TypeError: %d format: a
number is required, not str"]

What am I doing wrong? How can I change this, so my python script receive all the 3 parameters?

>Solution :

Command line argument values are always strings. If you mean for them to be something else (e.g. int) you have to do that yourself – including any error handling when users pass in the wrong thing:

var1 = sys.argv[0]
var2 = int(sys.argv[1])
var3 = int(sys.argv[2])

try:
    int_arg = int(sys.argv[1])
except ValueError:
    print("invalid command; usage: ...")