How do I run a python script from within the IDLE interactive shell?
The following throws an error:
>>> python helloworld.py
SyntaxError: invalid syntax
This question is related to
python
shell
command-line
python-idle
There is one more alternative (for windows) -
import os
os.system('py "<path of program with extension>"')
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.
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])
For example:
import subprocess
subprocess.call("C:\helloworld.py")
subprocess.call(["python", "-h"])
Try this
import os
import subprocess
DIR = os.path.join('C:\\', 'Users', 'Sergey', 'Desktop', 'helloword.py')
subprocess.call(['python', DIR])
In IDLE, the following works :-
import helloworld
_x000D_
I don't know much about why it works, but it does..
In Python 3, there is no execFile
. One can use exec
built-in function, for instance:
import helloworld
exec('helloworld')
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
You can use this in python3:
exec(open(filename).read())
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")
EASIEST WAY
python -i helloworld.py #Python 2
python3 -i helloworld.py #Python 3
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.
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
I tested this and it kinda works out :
exec(open('filename').read()) # Don't forget to put the filename between ' '
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')
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).
Source: Stackoverflow.com