Unable to execute Python script from batch file

Question 1

I'm trying to run a Python program from the command line so I created a batch file like so:

@py.exe C:\MyPythonScripts\program.py%*@pause

The script should print a simple message, but when I type "program" in the Windows Run program cmd appears for a second and closes itself. What am I doing wrong?.

This is the code:

#!python3def printPicnic(itemsDict,leftWidth,rightWidth):    print('PICNIC ITEMS'.center(leftWidth + rightWidth,'-'))    for k,v in itemsDict.items():        print(k.ljust(leftWidth,'.') + str(v).rjust(rightWidth))picnicItems = {'sandwiches':4, 'apples': 12, 'cups': 4, 'cookies':8000}printPicnic(picnicItems,12,5)printPicnic(picnicItems,20,6)

This is my PATH variable:

> C:\Program Files (x86)\Common> Files\Intel\Shared> Files\cpp\bin\Intel64;C:\ProgramData\Oracle\Java\javapath;C:\Program> Files (x86)\NVIDIA Corporation\PhysX\Common;C:\Program Files> (x86)\Intel\iCLS Client\;C:\Program Files\Intel\iCLS> Client\;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0\;C:\Program> Files\Intel\Intel(R) Management Engine Components\DAL;C:\Program> Files\Intel\Intel(R) Management Engine Components\IPT;C:\Program Files> (x86)\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files> (x86)\Intel\Intel(R) Management Engine Components\IPT;C:\Program Files> (x86)\ATI Technologies\ATI.ACE\Core-Static;C:\Program Files> (x86)\AMD\ATI.ACE\Core-Static;C:\Program Files> (x86)\Skype\Phone\;C:\Program> Files\Java\jdk1.8.0_121\bin;C:\MyPythonScripts;C:\Python34;C:\Program> Files (x86)\Common Files\Intel\Shared> Files\cpp\bin\Intel64;C:\ProgramData\Oracle\Java\javapath;C:\Program> Files (x86)\NVIDIA Corporation\PhysX\Common;C:\Program Files> (x86)\Intel\iCLS Client\;C:\Program Files\Intel\iCLS> Client\;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0\;C:\Program> Files\Intel\Intel(R) Management Engine Components\DAL;C:\Program> Files\Intel\Intel(R) Management Engine Components\IPT;C:\Program Files> (x86)\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files> (x86)\Intel\Intel(R) Management Engine Components\IPT;C:\Program Files> (x86)\ATI Technologies\ATI.ACE\Core-Static;C:\Program Files> (x86)\AMD\ATI.ACE\Core-Static;C:\Program Files> (x86)\Skype\Phone\;C:\Program> Files\Java\jdk1.8.0_121\bin;C:\Python34\Scripts

Question 2

@Farhan.K Code added...

Question 3

So the batch file is calledprogram.bat?

Question 4

Have a look at my answer in here:stackoverflow.com/questions/54847871/…

Question 5

Regarding your batch file, I would suggest perform these changes:

You were missing a space inbetween thepath and the%*, also enclose thepath in quotes to prevent it frombreaking when spaces are in the path

@echo offpy.exe "C:\MyPythonScripts\program.py" %1 %2 %3 %4 %5 %6 %7 %8 %9pause

Question 6

I edited the batch file like in your answer and now it works!. But I'm not sure why, I mean what does@echo off do and what's the difference between@py.exe and justpy.exe?

Question 7

@Xcecution the@ symbol hides the command input, but can be replaced by using@echo off, which prevents you from having to use@ before every command

Question 8

That is wrong,%* doesnot include the path of the batch file, so it is equivalent to%1 %2 %3 ...! Quoting paths is always a good practice and avoids trouble with white-spaces and other special characters, but the main problem here was the missing space between the path and%*...

Question 9

If the .py file association is configured to execute via py.exe, then you can run "C:\MyPythonScripts\program.py" directly. The first line of the script can be a shebang to run a particular version of Python. This can be a fully-qualified path such as#!"C:\Program Files\Python36\python.exe" or a virtual Unix-style shebang like#!/usr/bin/python3.

Question 10

The problem in your batch file is a missingSPACE:

@rem               THERE MUST BE A SPACE:@rem                                 |@rem                                 V@py.exe C:\MyPythonScripts\program.py %*@pause

In addition, I strongly recommend to put quotation marks around paths in order to avoid trouble with white-spaces and other spacial characters.

Question 11

You can do it using the following method :

@ECHO OFFsetlocalset PYTHONPATH=C:\Python35 (you version of python)C:\MyPythonScripts\program.py  %1<-- (you you have arg)  endlocal

Sam Denty 4,1853 gold badges32 silver badges46 bronze badges · Accepted Answer · 2017-03-14 19:49:57Z

4

Regarding your batch file, I would suggest perform these changes:

You were missing a space inbetween thepath and the%*, also enclose thepath in quotes to prevent it frombreaking when spaces are in the path

@echo offpy.exe "C:\MyPythonScripts\program.py" %1 %2 %3 %4 %5 %6 %7 %8 %9pause

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editedMar 14, 2017 at 19:49

answeredMar 14, 2017 at 14:00

Sam Denty

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4 Comments

Xcecution

Xcecution Over a year ago

I edited the batch file like in your answer and now it works!. But I'm not sure why, I mean what does@echo off do and what's the difference between@py.exe and justpy.exe?

2017-03-14T14:20:30.123Z+00:00

Sam Denty

Sam Denty Over a year ago

@Xcecution the@ symbol hides the command input, but can be replaced by using@echo off, which prevents you from having to use@ before every command

2017-03-14T14:34:15.98Z+00:00

aschipfl

aschipfl Over a year ago

That is wrong,%* doesnot include the path of the batch file, so it is equivalent to%1 %2 %3 ...! Quoting paths is always a good practice and avoids trouble with white-spaces and other special characters, but the main problem here was the missing space between the path and%*...

2017-03-14T19:44:57.39Z+00:00

Eryk Sun

Eryk Sun Over a year ago

If the .py file association is configured to execute via py.exe, then you can run "C:\MyPythonScripts\program.py" directly. The first line of the script can be a shebang to run a particular version of Python. This can be a fully-qualified path such as#!"C:\Program Files\Python36\python.exe" or a virtual Unix-style shebang like#!/usr/bin/python3.

2017-03-15T01:57:06.13Z+00:00

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Unable to execute Python script from batch file

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