从终端问题运行python程序

Question

Basically this is something that I had an issue with running C programme and I'm trying to run a python program from a terminal but the problem arises again. after tying an exact file in a exact directory the terminal doesn't seem to run the program and just skip it.

Is there something that I'm doing wrong to run and display on a terminal command?

$ ls
hello_world.py
$ python hello_world.py
$

This below 'script' is how I run the code with sublime text. Basically from my point of view there is no problem in script itself..

print('Hello Python world!')

Answer 1

If your python is properly installed then there is no problem with the terminal. Python interpreter executes code line by line.It is completing the file and coming out of it.

Answer 2

Whenever I have this kind of problem it is because the file I'm trying to run is not the same I am changing. I recommend using something (like cat ) to check the content of the file before actually running it.

So, in your case, pop up your terminal and run:

$ cat hello_world.py

The output should be

$ cat hello_world.py
print("Hello Python World!")

If the output is blank, there is your problem. Try to open that exact file with sublime . Probably with

$ sublime hello_world.py

Answer 3

At the top of your .py file

Add

#!/usr/bin/python3 

Then when you need to give your file permissions

chmod +x hello_world.py

Then to run

./hello_world.py

This will run it in python3 if you want python2 just change that in the usr/bin