Invalid Syntax Error

[Matt Sowden]

Hey there,

This may be a silly problem, but I seem to be coming across syntax errors when I'm trying to run examples such as the Freebase and DBPedia examples packaged with the package from pip and from github master.

Here's a traceback:

Traceback (most recent call last):

  File "main.py", line 20, in <module>

    import quepy

  File "/usr/local/lib/python2.6/dist-packages/quepy-0.2-py2.6.egg/quepy/__init__.py", line 17, in <module>

    from quepy.quepyapp import install, QuepyApp

  File "/usr/local/lib/python2.6/dist-packages/quepy-0.2-py2.6.egg/quepy/quepyapp.py", line 19, in <module>

    from quepy import generation

  File "/usr/local/lib/python2.6/dist-packages/quepy-0.2-py2.6.egg/quepy/generation.py", line 19, in <module>

    from quepy.mql_generation import generate_mql

  File "/usr/local/lib/python2.6/dist-packages/quepy-0.2-py2.6.egg/quepy/mql_generation.py", line 43

    graph = {node: [] for node in e.iter_nodes()}

Any thoughts?

-M.

[Gonzalo García Berrotarán]

Hi there, thanks for the report but i think this traceback is not complete.

It appears to be missing the last part where it describes exactly the line of the invalid syntax.

Would you mind sending it again with the complete output including the command you're running so we can test it ourselves?

Thanks, regards!

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[Matt Sowden]

Hi,

Here's a full traceback including the command line:

yuukari@polaris:~/share/quepy/examples/freebase$ python main.py Who is the president of Apple?

Traceback (most recent call last):

  File "main.py", line 15, in <module>

    import quepy

  File "/usr/local/lib/python2.6/dist-packages/quepy-0.2-py2.6.egg/quepy/__init__.py", line 17, in <module>

    from quepy.quepyapp import install, QuepyApp

  File "/usr/local/lib/python2.6/dist-packages/quepy-0.2-py2.6.egg/quepy/quepyapp.py", line 19, in <module>

    from quepy import generation

  File "/usr/local/lib/python2.6/dist-packages/quepy-0.2-py2.6.egg/quepy/generation.py", line 19, in <module>

    from quepy.mql_generation import generate_mql

  File "/usr/local/lib/python2.6/dist-packages/quepy-0.2-py2.6.egg/quepy/mql_generation.py", line 43

    graph = {node: [] for node in e.iter_nodes()}

                        ^

SyntaxError: invalid syntax

yuukari@polaris:~/share/quepy/examples/freebase$

[Rafael Carrascosa]

Hi Matt,

Quepy is meant to run in Python 2.7, so the problem you see is that Python 2.6 does not support dictionary comprehensions. Then that innocent line "graph = {node: [] for node in e.iter_nodes()}" blows up as a syntax error.

Two options:

 - Patch that line to "graph = dict((node, []) for node in e.iter_nodes())"

 - Use Python 2.7

Best regards,

Rafael

[Matt Sowden]

Yep, there it is. Thanks for that! I didn't realize that! The more you learn I suppose :)

-M.

[Gunnar Aastrand Grimnes]

This line is a dict comprehension, it requires python 2.7 or 3. Could that be it?

-Gunnar

[Lankipalli Mohan Babu]

PFA, Can you solve this problem ?

using windows 10 and python 3.6.