Actually, wouldn't we want to do this?
import sys
sys.argv = ['abc.py','arg1', 'arg2']
execfile('abc.py')
Top answer 1 of 13
60
Actually, wouldn't we want to do this?
import sys
sys.argv = ['abc.py','arg1', 'arg2']
execfile('abc.py')
2 of 13
59
try this:
import sys
sys.argv = ['arg1', 'arg2']
execfile('abc.py')
Note that when abc.py finishes, control will be returned to the calling program. Note too that abc.py can call quit() if indeed finished.
Python Geeks
pythongeeks.org › python geeks › learn python › python exec() with examples
Python exec() with Examples - Python Geeks
November 1, 2021 - After this, it is executed if there are no syntax errors. If an object is passed, then it is directly executed. ... The first argument is a must, and the two are optional and hold a default value None.
Functions variable binding and `exec`
Hello, Could someone please help me understand the binding mechanism behind this behaviour? >>> def f(): print(x) ... >>> x=1 >>> exec("x=2; f()", {}, {'f': f}) 1 I would like to know how to somehow get exec to print 2 here (injecting it into exec arguments is totally fine). More on discuss.python.org
0
0
January 30, 2025Using Python to interact with command line program
You can programmatically interact on the console with a subprocess using pexpect. https://pexpect.readthedocs.io/en/stable/overview.html More on reddit.com
20
5
July 22, 2022How to set a variable as global with python’s exec() function?
I strongly recommend you avoid using global if you can. It can cause you lots of problems with larger programmes, especially if you break them up into modules. While not use class instance attributes, or a mutable data structure in scope of all of the functions? More on reddit.com
13
3
January 30, 2020Be careful with exec and eval in Python
Seems like fairly obvious but good advice to me. Didn't know about using exec in a custom namespace - that was cool. Learnt a couple other things too.
Cheers for posting!
More on reddit.com 16
56
February 1, 2011Videos
Top answer 1 of 2
4
to pass arguments to exec() you need to pass dict as an argument for globals/locals not set.
exec(open('external_script.py'.read(),{'argv':'install'})
and it will create argv reference inside exec() scope, if you pass array to your external_script.py you will have to do add the following to the code
for i in argv: sys.argv.append(i)
note: if you use from sys import argv to import argv it will overwrite the value you passed with ['external_script.py']
2 of 2
2
os.system is used to execute a cmd command
import os
cmd=input("type a cmd statement here")
try:
exec(os.system(cmd))
except Exception as e:
print(e)
For you it will be
os.system("external_script.py install")
Where install is the argument to pass to external_script.py
Programiz
programiz.com › python-programming › methods › built-in › exec
Python exec() (With Examples)
The method executes the python code inside the object method and produces the output Sum = 15. # get an entire program as input program = input('Enter a program:') ... Here, we have used the exec() method to execute the program object which has the user input code. Note: When you use the exec() method with the OS module, you need to be careful.
Real Python
realpython.com › python-exec
Python's exec(): Execute Dynamically Generated Code – Real Python
November 10, 2022 - You also learned that this function can take two optional arguments, globals and locals, which allow you to tweak the execution namespace for exec(). Additionally, you’ve learned that using exec() implies some serious security issues, including ...
Finxter
blog.finxter.com › how-to-execute-a-python-file-with-arguments-in-python
How to Execute a Python File with Arguments in Python? – Be on the Right Side of Change
This variable is defined on operating system level, so you can pass it within your calling Python script and fill it with the desired arguments. Fill the variable sys.argv with your desired values in the calling Python script. Load the Python file script.py into a Python string. Pass the Python string into Python’s built-in exec() function.
Scaler
scaler.com › topics › python-exec
exec() in Python - Scaler Topics
May 4, 2023 - The python exec() function takes three parameters below. object : It is the required one parameter. It can be either a string or a code object. This object provides the code or string to the exec() function for further execution. globals : It is an optional parameter.
Python documentation
docs.python.org › 3 › library › functions.html
Built-in Functions — Python 3.14.4 documentation
February 27, 2026 - Code objects can be executed by ... for information on how to work with AST objects. The filename argument should give the file from which the code was read; pass some ......
AskPython
askpython.com › home › understanding the python exec() method
Understanding the Python exec() Method - AskPython
August 6, 2022 - For string – the string is parsed as a suite of Python statements which is then executed (unless a syntax error occurs). For an open file – the file is parsed until EOF and executed. For a code object – it is simply executed. And the two optional arguments globals and locals must be dictionaries used for the global and local variables.
Medium
pythonflood.com › boost-your-coding-abilities-with-python-exec-function-bec400c53e9c
Boost Your Coding Abilities with Python exec() Function | by Rinu Gour | PythonFlood
October 21, 2023 - In this example, we define a dictionary of variables `variables` and a string of Python code `code`. We then pass both of these arguments to the `exec()` function, with `variables` as the `globals` parameter.
Python
docs.python.org › 2.0 › ref › exec.html
6.13 The exec statement
Programmer's hints: dynamic evaluation of expressions is supported by the built-in function eval(). The built-in functions globals() and locals() return the current global and local dictionary, respectively, which may be useful to pass around for use by exec. Also, in the current implementation, multi-line compound statements must end with a newline: exec "for v in seq:\n\tprint v\n" works, but exec "for v in seq:\n\tprint v" fails with SyntaxError.
GeeksforGeeks
geeksforgeeks.org › exec-in-python
exec() in Python - GeeksforGeeks
November 29, 2023 - Dynamic execution in Python allows the execution of specific methods such as sum() and iter() along with built-in methods inside the exec() function, demonstrating the flexibility of dynamic execution in Python. Through this, only the sum, and iter methods along with all the built-in methods can be executed inside exec() function.
Python.org
discuss.python.org › python help
Functions variable binding and `exec` - Python Help - Discussions on Python.org
January 30, 2025 - Hello, Could someone please help me understand the binding mechanism behind this behaviour? >>> def f(): print(x) ... >>> x=1 >>> exec("x=2; f()", {}, {'f': f}) 1 I would like to know how to somehow get exec to print 2…
TutorialsPoint
tutorialspoint.com › exec-in-python
exec() in Python
Exec function can dynamically execute code of python programs. The code can be passed in as string or object code to this function. The object code is executed as is while the string is first parsed and checked for any syntax error. If no syntax e
W3Schools
w3schools.com › python › ref_func_exec.asp
Python exec() Function
The exec() function accepts large blocks of code, unlike the eval() function which only accepts a single expression ... If you want to use W3Schools services as an educational institution, team or enterprise, send us an e-mail: sales@w3schools.com · If you want to report an error, or if you want to make a suggestion, send us an e-mail: help@w3schools.com · HTML Tutorial CSS Tutorial JavaScript Tutorial How To Tutorial SQL Tutorial Python Tutorial W3.CSS Tutorial Bootstrap Tutorial PHP Tutorial Java Tutorial C++ Tutorial jQuery Tutorial
Toppr
toppr.com › guides › python-guide › references › methods-and-functions › methods › built-in › exec › python-exec
Python exec() function | What is Python exec()? | Why do we use exec()? |
August 18, 2021 - Python exec() built-in function is used to dynamically execute Python programs that are passed as either a string or an object code to the function. An entire block of code can be parsed as a string or object code argument to the Python exec() function dynamically.
Geek Python
geekpython.in › exec-function-in-python
exec() Function In Python - Detailed Guide With Code
August 15, 2023 - Executing the Python source file using the exec function ... We used the open() function using the with statement to open the .py file as a regular text file and then used the .read() on the file object to read the content of the file as a string into the file variable which is passed in the exec to execute the code.
Finxter
blog.finxter.com › home › learn python blog › python exec() — a hacker’s guide to a dangerous function
Python exec() - A Hacker's Guide to A Dangerous Function - Be on the Right Side of Change
June 7, 2022 - Python’s exec() function executes the Python code you pass as a string or executable object argument. This is called dynamic execution because, in contrast to normal static Python code, you can generate code and execute it at runtime.
DataFlair
data-flair.training › blogs › python-exec-function
Python exec Function - Example and Risk - DataFlair
November 24, 2018 - Help on built-in function exec in module builtins: exec(source, globals=None, locals=None, /) Execute the given source in the context of globals and locals. The source may be a string representing one or more Python statements or a code object ...
TechVidvan
techvidvan.com › tutorials › python-exec-syntax-examples
Python Exec() with Syntax and Examples - TechVidvan
January 9, 2021 - If the coder passes an empty dictionary as globals for the search, then only the built-ins are available to the object (the first parameter to the exec()) in runtime. Unlike any other programming language, python has a lot to offer to its coders, with the ease and efficiency function is actually what gives its coders the best in python.