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I am trying to find all .js files in directories and gives it as arguments to python. I could collect all the files with .js using bash command find . -name "*.js", but I don't know how to give these information to python. I don't want to send file name one by one. I want to send as a list the python code that handling arguments is following.

import argparse

argparser = argparse.ArgumentParser("sh test")

argparser.add_argument("js_file", type=str, nargs ="+", help="js file names")

args = argparser.parse_args()
for file in args.js_file:
    # do something

You can use from a python script to do this:

import subprocess
cmd  = 'find . -name "*.js"'

p =, shell=True, capture_output=True)
files = p.stdout.decode().split()

Python Command Line Arguments – Real Python, Some examples of shell interpreters are Bash on Linux or Command Prompt on Windows. The use of Python command line arguments is also strongly Any minor changes in the input will result in a different hash value. You can handle command line arguments in a bash script by two ways. One is by using argument variables and another is by using getopts function. How you can handle command line arguments is shown in this tutorial. Using argument variables: Argument variable starts from $0. The main script file name is stored in $0 which receives argument values

If you have GNU find you can use -exec + to call a command with all the matching file names in one go.

find . -name '*.js' -exec {} +

If not you can get the same behavior with find | xargs.

find . -name '*.js' -print0 | xargs -0

Unable to pass a bash variable as a python argument in bash, Perhaps the aws bash command is returning non-printable characters that you don't see with print() . Try removing them with tr : FOLDER=$(./aws get  Python is a wonderful language for scripting and automating workflows and it is packed with useful tools out of the box with the Python Standard Library. A common thing to do, especially for a sysadmin, is to execute shell commands. But what usually will end up in a bash or batch file, can be also done in Python. You’ll learn here how to do just that with the os and subprocess modules.

Given that is your python script, you can use this:

python `find . -name "*.js" | tr '\n' ' '`

Executing Shell Commands with Python, Learning how to run shell commands in Python opens the door for us to automate In this script, we create two variables that store the result of executing The remaining items of the list are the flags and the arguments of the command. $ python The script has the name $ python /home/user/ The script has the name /home/user/ As you can see from the second call above, we not only get the name of the Python file, but also the full path used to call it.

passing python variable into shell script, How do you read a command line argument in Python? Python provides a getopt module that helps you parse command-line options and arguments. $ python arg1 arg2 arg3 The Python sys module provides access to any command-line arguments via the sys.argv. This serves two purposes − sys.argv is the list of command-line arguments. len(sys.argv) is the number of command-line arguments.

Input the filename in the commandline as an argument in Python, How do I pass a Python variable to a shell script? You can easily pass command line arguments to a Python script. In this tutorial, we will help you to read the command line arguments in a Python script. Below is the sample Python script, which reads the command line arguments and print details. Create a sample script like and copy below content.

How to Run a Shell Command from Python and Get The Output , that Popen runs. With %s : cmd=(''' ssh "$servername" /usr/local/bin/pstat '%s' | awk 'FNR==5 {print $9}' ''' % int(var)) p=subprocess. Write a Bash script so that it receives arguments that are specified when the script is called from the command line. Use this method when a script has to perform a slightly different function depending on the values of the input parameters, also called arguments.

  • You can find all files matching *.js in Python too:…
  • Related…
  • If there are no spaces in the filenames, this is just python *.js