I have a python script that I want to execute from the terminal, but I don't want to use the command pythonscriptName.py, instead, I'd like to just type scriptName. Is that possible? If it is, how?
I had a look in here and here, but it doesn't work (probably because I'm on a different os).
I'm using python 2.7.9 on osx Yosemite (10.10.3).
Put this as the first line in your Python script:
#!/usr/bin/python
(or wherever your Python interpreter lives).
Then give the script the executable bit:
chmod +x scriptName.py
Now you should be able to execute it like ./scriptName.py. You can then put a symlink without the .py extension somewhere in your path.
Related
I'm following along with Google's Python class, and the person in the videos always runs his scripts from the interactive session in command line using "./". Whenever I try it, I just get a syntax error. How can I use ./ to run scripts? I'm using Windows 10
To run a script from the command line you need to use the syntax
python3 script.py
Now on Unix systems, it's possible to add a shebang to the first line of the script as followings
#!/usr/bin/env python3
This then allows the shell syntax './name.py' to work. But windows doesn't have this mechanism. Instead, you need to create an 'association' between the .py extension and the python executable ('right click', 'open with'). Or just use the full syntax. Both require the python executable to be in your path, and generally on windows both python 2 and 3 will have the same executable name
I am new to Python.
I am executing a script in windows, but it does nothing and gives an error "invalid syntax".
Can you help me with the error. I have set the PATH variable to include my python.exe location.
Please see attached image:
Your image is from the python command line, only python commands are accepted there and there is no need to specify python in the beginning (in the shell python is just a call to the python interpeter).
In order to run windows commands in python use the os or subprocess modules.
Let's say I've got this one-line Python module called say_hello.py.
print 'Hello World'
How can I make the script executable from any location in my terminal? That is, having Hello World printed outside the Python interpreter anywhere on my system. I'm running on OS X Mavericks.
General *nix answer
First line of script should look something like:
#!/usr/bin/python
although the exact path may be different on your system. Then, make the script executable and put it somewhere in your PATH.
Add as the first line of your script:
#!/usr/bin/env python
or, for a python3 script:
#!/usr/bin/env python3
The shell (actually the kernel) will use the first Python/Python3 interpreter found in your $PATH.
I am new to python, just got the learning python book and got stuck with the spam.py in the command line. The book says to make a file named spam.py and then ask python to run this by typing
%python spam.py
I have added the python to my PATH as it was C:\Python27 so I can call Python in the Windows CMD, but this just will not run. The error I receive is
>>>python spam.py
File "<stdin>", line 1
python spam.py
^
SyntaxError: invalid syntax
I appreciate any help that you can give.
Your problem is that you're trying to run your code from within the Python interpreter itself (the >>> prompt is the giveaway here since that's the Python prompt).
Exit from the interpreter (with CTRL-Z and ENTER for Windows) and run it from cmd.exe (the c:\> is the prompt in the example below):
c:\> python spam.py
From within the interpreter, you can also run an external file with:
execfile('spam.py')
Could you post the code from spam.py...
You seem to be trying to run the spam.py from the Python interpreter. Go to where the file is in Windows Explorer and launch it from there, using the C:\Python2.7\python.exe CLI.
By the way, since you didn't understand the syntax error warning, please see:
http://dictionary.reference.com/browse/SYNTAX
http://dictionary.reference.com/browse/SEMANTICS
You are trying to execute Python script file within the interpreter. Come out from the Python interpreter by pressing CTRL+Z and then ENTER key.
Then execute with the command :
Say, C:/> python spam.py
In order to run a python program you have to run program in Command Line not in Python Interpreter (press Windows Sign + R and type cmd.exe)
Moreover you have to remember to be exactly in the directory where your file is saved, e.g.:
If the file file is C:\Python27\spam.py you have to be in C:\Python27.
To change the directory:
use dir to display the folders and files in current place
use cd to change your directory (e.g. C:\Python27\>cd Spam moves you to C:\Python27\Spam
use Tab key to autocomplete names of the commands, folders and files
As you said you have added Python to PATH and followed my instructions, the statement below should work perfectly
python spam.py
Hope I could help.
If for example, your file is in G: drive, type this in cmd:
python G:/myfile.py
Basically, type in the path. Just doing "cd" won't work in Python
I am trying to run my celcius.py file but I don't know what to type in the command line...
When I type Python celcius.py it does not work:
I get the following message:
>>> python celcius.py
File "<stdin>", line 1
python celcius.py
^
SyntaxError: invalid syntax
>>>
When I open it the program with the Python IDLE GUI it runs the program and closes the program before I can see it. I read somewhere that it won't close if you run it from the command line.
You need to type "python celsius.py" in the windows command prompt, rather than the Python command prompt; this only works straight away if the Python directory is in your PATH. It probably isn't, so you need to use this instead: C:\Python27\python.exe celsius.py.
Because celsius for you is in the same folder as python, you can do this as well:
CD C:\Python27
python.exe celsius.py
In general, change the directory (CD) to where your file is stored, then run C:\Python27\python.exe <filename>
Double-clicking is generally easier in Windows, though, assuming it is set up to do that (it normally is unless you change it back)
There are a few ways of doing this.
WAY 1
step one: Open command prompt (go to start and type in "cmd") *NOTE: do NOT open python. if you see ">>>" in your command prompt window you opened python. This is bad.
step two: type in this: python "path\to\file\celcius.py" replacing path\to\file with the path (starting with the name of the folder that you're computer user is named. So for my computer that would be ben. So let's say my celcius.py is located on the desktop I would run python "Desktop\celcius.py" and hit <.enter.>. It looks like you have celcius.py in your python folder. Don't put it there. that's the system files for python itself. move it to your desktop or your documents folder. By the way, if you have truble using this, make sure you're system is set up to execute the python command. Go here for reference.
WAY 2
assuming you have python associated with the .py file in explorer, you can find the file and double-click on it.
WAY 3
open IDLE (you can usually find it in your list of programs in start). Open the python file through IDLE. This will show you the source code for your program. hit <.F5.>. F5 will execute the program from within the the IDLE shell.
You don't need to do this, just open the command prompt and type:
python path/to/your/file.py
Just make sure that python command is set in your environment PATH, check this