I get syntax error when I execute this python scripts but not when I invoke the interpreter

Tuesday 5 December 2017

in a file called test.py I have the following
code

#!/usr/bin/python3
with
            open('test.txt','w') as File:

            print(1,file=File)

When I
do

$ python3
            test.py

It runs fine. But when I
do

$ chmod +x test.py
$
            ./test.py

I get a
SyntaxError:

 File "./test.py", line
            4
 print(1,file=File)
 ^
SyntaxError: invalid
            syntax

Any one has any idea why?
Thank you

I'm running Python 3.3.1 in Ubuntu
13.04

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