[Python] OSError: [WinError 193] %1 is not a valid Win32 application

I am trying to call a Python file "hello.py" from within the python interpreter with subprocess. But I am unable to resolve this error. [Python 3.4.1].

import subprocess
subprocess.call(['hello.py', 'htmlfilename.htm'])
Traceback (most recent call last):
File "<pyshell#42>", line 1, in <module>
subprocess.call(['hello.py', 'htmlfilename.htm'])
File "C:\Python34\lib\subprocess.py", line 537, in call
with Popen(*popenargs, **kwargs) as p:
File "C:\Python34\lib\subprocess.py", line 858, in __init__
restore_signals, start_new_session)
File "C:\Python34\lib\subprocess.py", line 1111, in _execute_child
startupinfo)
OSError: [WinError 193] %1 is not a valid Win32 application


Also is there any alternate way to "call a python script with arguments" other than using subprocess?

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