run program in Python shell
PythonExecutablePython Problem Overview
I have a demo file: test.py
.
In the Windows Console I can run the file with: C:\>test.py
How can I execute the file in the Python Shell instead?
Python Solutions
Solution 1 - Python
Use execfile for Python 2:
>>> execfile('C:\\test.py')
Use exec for Python 3
>>> exec(open("C:\\test.py").read())
Solution 2 - Python
If you're wanting to run the script and end at a prompt (so you can inspect variables, etc), then use:
python -i test.py
That will run the script and then drop you into a Python interpreter.
Solution 3 - Python
It depends on what is in test.py
. The following is an appropriate structure:
# suppose this is your 'test.py' file
def main():
"""This function runs the core of your program"""
print("running main")
if __name__ == "__main__":
# if you call this script from the command line (the shell) it will
# run the 'main' function
main()
If you keep this structure, you can run it like this in the command line (assume that $
is your command-line prompt):
$ python test.py
$ # it will print "running main"
If you want to run it from the Python shell, then you simply do the following:
>>> import test
>>> test.main() # this calls the main part of your program
There is no necessity to use the subprocess
module if you are already using Python. Instead, try to structure your Python files in such a way that they can be run both from the command line and the Python interpreter.
Solution 4 - Python
For newer version of python:
exec(open(filename).read())
Solution 5 - Python
If you want to avoid writing all of this everytime, you can define a function :
def run(filename):
exec(open(filename).read())
and then call it
run('filename.py')
Solution 6 - Python
From the same folder, you can do:
import test