import sys
print(int(sys.argv[1]))

package main
import (
	"strconv"
	"os"
	"fmt"
)
func main() {
	_int, _ := strconv.Atoi(os.Args[1]) // error handling missing
	fmt.Println(_int)
}

Traceback (most recent call last):
 File "foo.py", line 3, in <module>
 print(int(sys.argv[1]))
ValueError: invalid literal for int() with base 10: 'not_an_int'