Reading string arguments passed from batch file to python script

python command line arguments example
python 3 command line arguments
run python script with arguments
python argparse example
python command line arguments parsing
python read arguments from file
python getopt
command line arguments in python w3schools

I have seen multiple posts on passing the string but not able to find good solution on reading the string passed to python script from batch file. Here is my problem.

I am calling python script from batch file and passing the argument.

string_var = "123_Asdf"

bat 'testscript.py  %string_var%'

I have following in my python code.

import sys

passed_var = sys.argv[1]

When I run the above code I always see below error.

passed_var = sys.argv[1]
IndexError: list index out of range

Has anyone seen this issue before? I am only passing string and expect it to be read as part of the first argument I am passing to the script.

Try this:

import sys
for x,parameter in enumerate(sys.argv):
    print(x, parameter)

Python Command Line Arguments – Real Python, A Few Methods for Parsing Python Command Line Arguments The example reverse.py reverses the first argument passed at the command line: Note that surrounding the multi-word string "Real Python" with quotes� 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 script.py and copy below content.

If I have read your question and its formatting correctly, I think your .bat file should read:

Set string_var="123_Asdf"
"D:\BuildTools\tools\python27\python.exe" testscript.py %string_var%

Or better still:

Set "string_var=123_Asdf"
"D:\BuildTools\tools\python27\python.exe" testscript.py "%string_var%"

Where %string_var% can be passed with or without its enclosing doublequotes.

Python - Command Line Arguments, Python - Command Line Arguments - Python provides a getopt module that helps you two functions and an exception to enable command line argument parsing. options − This is the string of option letters that the script wants to recognize, Consider we want to pass two file names through command line and we also� Steps to Create a Batch File to Run Python Script Step 1: Create the Python Script. To start, create your Python Script. For example, I used the script below in order to create a simple GUI with a single button to exit the application. Alternatively, you may use any Python script that you’d like.

Your batch file should be a bit simpler, make sure you have your PATH set correctly or else this won't work.

python testscript.py [argument]

Command Line Arguments in Python, In this tutorial, we're diving into Command Line Arguments in Python. Using the sys module, getopt module and argparse module, we'll parse and read arguments. In general, arguments are passed to CLI tools differently, depending on your 2 arguments $ python arguments-count.py --option "long string" The script is� Number of arguments: 4 arguments. Argument List: ['test.py', 'arg1', 'arg2', 'arg3'] NOTE − As mentioned above, first argument is always script name and it is also being counted in number of arguments. Parsing Command-Line Arguments. Python provided a getopt module that helps you parse command-line options and arguments. This module provides

Make a batch file run a python code with arguments, how do I make a python code that runs a .bat (batch) file, and the .bat file calls a Batch File to Run Python Script, You can read arguments passed to a batch file like Python 3 Note: The command line argument is read as a string by Python, � Reading of files in a Batch Script is done via using the FOR loop command to go through each line which is defined in the file that needs to be read. Since there is a no direct command to read text from a file into a variable, the ‘for’ loop needs to be used to serve this purpose.

How to pass arguments from batch file as a function to python, You can read arguments passed to a batch file like this [code]set arg1 = %1 set arg2 = %2 REM and so on set arg9 = %9 REM if there are more arguments you � sys.argv is a list in Python, which contains the command-line arguments passed to the script. With the len(sys.argv) function you can count the number of arguments. If you are gonna work with command line arguments, you probably want to use sys.argv. To use sys.argv, you will first have to import the sys module. Example. To show how this works.

16.4. argparse — Parser for command-line options, arguments and , The argparse module makes it easy to write user-friendly command-line interfaces. Assuming the Python code above is saved into a file called prog.py, it can be run at the If invalid arguments are passed in, it will issue an error: By default, ArgumentParser objects read command-line arguments in as simple strings. You can read arguments passed to a batch file like this [code]set arg1 = %1 set arg2 = %2 REM and so on set arg9 = %9 REM if there are more arguments you can use SHIFT shift set arg10 = %9 shift set arg11 = %9 shift set arg12 = %9 REM and so on

Comments
  • have you tried passing a string instead of a variable ? perhaps the variable is empty ?
  • also to run a python script you need to prepend the command with python, e.g. python myscript.py your_argument
  • This is how I am exactly calling the code. bat 'D:\\BuildTools\\tools\\python27\\python.exe testscript.py %string_var%