CODEWITHSUNDEEP
pythonshellcommand-linepython-idle
user1703914
user1703914

Reputation:

How to run a python script from IDLE interactive shell?

How do I run a python script from within the IDLE interactive shell?

The following throws an error:

>>> python helloworld.py
SyntaxError: invalid syntax

Upvotes: 134

Views: 416768

Answers (15)

Hugues Fontenelle
Hugues Fontenelle

Reputation: 5425

Python3:

exec(open('helloworld.py').read())

If your file not in the same dir:

exec(open('./app/filename.py').read())

See https://stackoverflow.com/a/437857/739577 for passing global/local variables.

Note: If you are running in windows you should use double slash "//" otherwise it gives error

In deprecated Python versions

Python2 Built-in function: execfile

execfile('helloworld.py')

It normally cannot be called with arguments. But here's a workaround:

import sys
sys.argv = ['helloworld.py', 'arg']  # argv[0] should still be the script name
execfile('helloworld.py')

Deprecated since 2.6: popen

import os
os.popen('python helloworld.py') # Just run the program
os.popen('python helloworld.py').read() # Also gets you the stdout

With arguments:

os.popen('python helloworld.py arg').read()

Advance usage: subprocess

import subprocess
subprocess.call(['python', 'helloworld.py']) # Just run the program
subprocess.check_output(['python', 'helloworld.py']) # Also gets you the stdout

With arguments:

subprocess.call(['python', 'helloworld.py', 'arg'])

Read the docs for details :-)

Tested with this basic helloworld.py:

import sys
if len(sys.argv) > 1:
    print(sys.argv[1])

Upvotes: 194

LynnSunshine
LynnSunshine

Reputation: 41

In a python console, one can try the following 2 ways.

under the same work directory,

1. >> import helloworld

# if you have a variable x, you can print it in the IDLE.

>> helloworld.x

# if you have a function func, you can also call it like this.

>> helloworld.func()

2. >> runfile("./helloworld.py")

Upvotes: 4

Grasshopper
Grasshopper

Reputation: 436

There is one more alternative (for windows) -

    import os
    os.system('py "<path of program with extension>"')

Upvotes: 0

vinsinraw
vinsinraw

Reputation: 2125

On Windows environment, you can execute py file on Python3 shell command line with the following syntax:

exec(open('absolute path to file_name').read())

Below explains how to execute a simple helloworld.py file from python shell command line

File Location: C:/Users/testuser/testfolder/helloworld.py

File Content: print("hello world")

We can execute this file on Python3.7 Shell as below:

>>> import os
>>> abs_path = 'C://Users/testuser/testfolder'
>>> os.chdir(abs_path)
>>> os.getcwd()
'C:\\Users\\testuser\\testfolder'

>>> exec(open("helloworld.py").read())
hello world

>>> exec(open("C:\\Users\\testuser\\testfolder\\helloworld.py").read())
hello world

>>> os.path.abspath("helloworld.py")
'C:\\Users\\testuser\\testfolder\\helloworld.py'
>>> import helloworld
hello world

Upvotes: 1

ujjal das
ujjal das

Reputation: 927

you can do it by two ways

  • import file_name

  • exec(open('file_name').read())

but make sure that file should be stored where your program is running

Upvotes: 1

Leonard
Leonard

Reputation: 3208

EASIEST WAY

python -i helloworld.py  #Python 2

python3 -i helloworld.py #Python 3

Upvotes: 10

Remache Amine
Remache Amine

Reputation: 79

I tested this and it kinda works out :

exec(open('filename').read())  # Don't forget to put the filename between ' '

Upvotes: 1

FacePalm
FacePalm

Reputation: 11728

You can use this in python3:

exec(open(filename).read())

Upvotes: 42

y2knoproblem
y2knoproblem

Reputation: 570

To run a python script in a python shell such as Idle or in a Django shell you can do the following using the exec() function. Exec() executes a code object argument. A code object in Python is simply compiled Python code. So you must first compile your script file and then execute it using exec(). From your shell:

>>>file_to_compile = open('/path/to/your/file.py').read()
>>>code_object = compile(file_to_compile, '<string>', 'exec')
>>>exec(code_object)

I'm using Python 3.4. See the compile and exec docs for detailed info.

Upvotes: 1

Aditya Dixit
Aditya Dixit

Reputation: 11

In IDLE, the following works :-

import helloworld

I don't know much about why it works, but it does..

Upvotes: 1

piogor
piogor

Reputation: 59

In Python 3, there is no execFile. One can use exec built-in function, for instance:

import helloworld
exec('helloworld')

Upvotes: 1

Sergey Nosov
Sergey Nosov

Reputation: 350

Try this

import os
import subprocess

DIR = os.path.join('C:\\', 'Users', 'Sergey', 'Desktop', 'helloword.py')

subprocess.call(['python', DIR])

Upvotes: 5

Sergey Nosov
Sergey Nosov

Reputation: 350

For example:

import subprocess

subprocess.call("C:\helloworld.py")

subprocess.call(["python", "-h"])

Upvotes: 2

optimistic_kid
optimistic_kid

Reputation: 41

execFile('helloworld.py') does the job for me. A thing to note is to enter the complete directory name of the .py file if it isnt in the Python folder itself (atleast this is the case on Windows)

For example, execFile('C:/helloworld.py')

Upvotes: 4

Ned Deily
Ned Deily

Reputation: 85045

The IDLE shell window is not the same as a terminal shell (e.g. running sh or bash). Rather, it is just like being in the Python interactive interpreter (python -i). The easiest way to run a script in IDLE is to use the Open command from the File menu (this may vary a bit depending on which platform you are running) to load your script file into an IDLE editor window and then use the Run -> Run Module command (shortcut F5).

Upvotes: 27

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