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#95 Fail to import pyparsing 2.1.2 in Python 3.4 and 3.3

v1.0 (example)
closed-fixed
nobody
None
5
2016-05-11
2016-05-11
orangain
No

Hi,
I found the issue when using matplotlib.

Problem

In Python 3.4 and 3.3, importing pyparsing 2.1.2 fails with a message "AttributeError: 'tuple' object has no attribute 'filename'".

How to Reproduce

$ python3.4 -V
Python 3.4.4
$ python3.4 -m venv venv3.4
$ . venv3.4/bin/activate
(venv3.4) $ pip install pyparsing==2.1.2
(venv3.4) $ python
Python 3.4.4 (default, Apr 23 2016, 23:16:11)
[GCC 4.2.1 Compatible Apple LLVM 7.0.2 (clang-700.1.81)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import pyparsing
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/private/tmp/venv3.4/lib/python3.4/site-packages/pyparsing.py", line 3478, in <module>
    _escapedPunc = Word( _bslash, r"\[]-*.$+^?()~ ", exact=2 ).setParseAction(lambda s,l,t:t[0][1])
  File "/private/tmp/venv3.4/lib/python3.4/site-packages/pyparsing.py", line 948, in setParseAction
    self.parseAction = list(map(_trim_arity, list(fns)))
  File "/private/tmp/venv3.4/lib/python3.4/site-packages/pyparsing.py", line 808, in _trim_arity
    this_line = extract_stack()[-1]
  File "/private/tmp/venv3.4/lib/python3.4/site-packages/pyparsing.py", line 793, in extract_stack
    return [(frame_summary.filename, frame_summary.lineno)]
AttributeError: 'tuple' object has no attribute 'filename'
>>>

Same as Python 3.3:

$ python3.3 -V
Python 3.3.6
$ virtualenv venv3.3 --python=python3.3
$ . venv3.3/bin/activate
(venv3.3)$ pip install pyparsing==2.1.2
(venv3.3)$ python
Python 3.3.6 (default, Feb  4 2016, 19:46:05)
[GCC 4.2.1 Compatible Apple LLVM 7.0.2 (clang-700.1.81)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import pyparsing
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/private/tmp/venv3.3/lib/python3.3/site-packages/pyparsing.py", line 3478, in <module>
    _escapedPunc = Word( _bslash, r"\[]-*.$+^?()~ ", exact=2 ).setParseAction(lambda s,l,t:t[0][1])
  File "/private/tmp/venv3.3/lib/python3.3/site-packages/pyparsing.py", line 948, in setParseAction
    self.parseAction = list(map(_trim_arity, list(fns)))
  File "/private/tmp/venv3.3/lib/python3.3/site-packages/pyparsing.py", line 808, in _trim_arity
    this_line = extract_stack()[-1]
  File "/private/tmp/venv3.3/lib/python3.3/site-packages/pyparsing.py", line 793, in extract_stack
    return [(frame_summary.filename, frame_summary.lineno)]
AttributeError: 'tuple' object has no attribute 'filename'
>>>

Workaround

Using Python 3.5 or importing pyparsing 2.1.1 does not fail.

$ python3.5 -V
Python 3.5.1
$ python3.5 -m venv venv3.5
$ . venv3.5/bin/activate
(venv3.5) $ pip install pyparsing==2.1.2
(venv3.5) $ python
Python 3.5.1 (default, Apr 18 2016, 03:49:24)
[GCC 4.2.1 Compatible Apple LLVM 7.0.2 (clang-700.1.81)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import pyparsing
>>>

Related

Bugs: #95

Discussion

  • Paul McGuire

    Paul McGuire - 2016-05-11

    Thanks! Yes, it looks like I only ran my unit tests on 2.7 and 3.5, not on 3.3 or 3.4.

     

  • The Compiler

    The Compiler - 2016-05-11

    I can confirm the issue.

    (FWIW I can highly recommend tox as a standardized way of running tests against all supported Python versions. Using a CI service like Travis CI you could do so in an automated way without going through the hassle of installing all versions locally. I'm not sure if there's a comparable thing with sourceforge integration however, so you'd probably need to set up a GitHub mirror or switch to Git/GitHub entirely if you wanted to use it)

     

    • Paul McGuire

      Paul McGuire - 2016-05-11

      Well, I now have a VM with a number of Python versions installed using
      pyenv, so that I can quickly switch between versions for testing. Found that
      my 3.5-compatible code was really only 3.5.0-compatible, and that in 3.5.1,
      a change in the traceback module changed the depth of the call stack, so I
      needed to make another change as well. I think there is probably one more
      convergence version that I'll need to release, but things look smoother for
      now.

      I've also downloaded tox to my VM, but I may be able to automate my testing
      using just pyenv and some simple shell scripting. But thanks for the tip!

      -- Paul

      From: The Compiler [mailto:thecompiler@users.sf.net]
      Sent: Wednesday, May 11, 2016 7:46 AM
      To: [pyparsing:bugs] 95@bugs.pyparsing.p.re.sf.net
      Subject: [pyparsing:bugs] #95 Fail to import pyparsing 2.1.2 in Python 3.4
      and 3.3

      I can confirm the issue.

      (FWIW I can highly recommend tox https://testrun.org/tox/ as a
      standardized way of running tests against all supported Python versions.
      Using a CI service like Travis CI https://www.travis-ci.org/ you could do
      so in an automated way without going through the hassle of installing all
      versions locally. I'm not sure if there's a comparable thing with
      sourceforge integration however, so you'd probably need to set up a GitHub
      mirror or switch to Git/GitHub entirely if you wanted to use it)

      [bugs:#95] https://sourceforge.net/p/pyparsing/bugs/95/ Fail to import
      pyparsing 2.1.2 in Python 3.4 and 3.3

      Status: open
      Group: v1.0 (example)
      Created: Wed May 11, 2016 05:25 AM UTC by orangain
      Last Updated: Wed May 11, 2016 12:14 PM UTC
      Owner: nobody

      Hi,
      I found the issue when using matplotlib.

      Problem

      In Python 3.4 and 3.3, importing pyparsing 2.1.2 fails with a message
      "AttributeError: 'tuple' object has no attribute 'filename'".

      How to Reproduce

      $ python3.4 -V
      Python 3.4.4
      $ python3.4 -m venv venv3.4
      $ . venv3.4/bin/activate
      (venv3.4) $ pip install pyparsing==2.1.2
      (venv3.4) $ python
      Python 3.4.4 (default, Apr 23 2016, 23:16:11)
      [GCC 4.2.1 Compatible Apple LLVM 7.0.2 (clang-700.1.81)] on darwin
      Type "help", "copyright", "credits" or "license" for more information.

      import pyparsing
      Traceback (most recent call last):
      File "<stdin>", line 1, in <module>
      File "/private/tmp/venv3.4/lib/python3.4/site-packages/pyparsing.py", line
      3478, in <module>
      _escapedPunc = Word( _bslash, r"[]-*.$+^?()~ ", exact=2
      ).setParseAction(lambda s,l,t:t[0][1])
      File "/private/tmp/venv3.4/lib/python3.4/site-packages/pyparsing.py", line
      948, in setParseAction
      self.parseAction = list(map(_trim_arity, list(fns)))
      File "/private/tmp/venv3.4/lib/python3.4/site-packages/pyparsing.py", line
      808, in _trim_arity
      this_line = extract_stack()[-1]
      File "/private/tmp/venv3.4/lib/python3.4/site-packages/pyparsing.py", line
      793, in extract_stack
      return [(frame_summary.filename, frame_summary.lineno)]
      AttributeError: 'tuple' object has no attribute 'filename'

      Same as Python 3.3:

      $ python3.3 -V
      Python 3.3.6
      $ virtualenv venv3.3 --python=python3.3
      $ . venv3.3/bin/activate
      (venv3.3)$ pip install pyparsing==2.1.2
      (venv3.3)$ python
      Python 3.3.6 (default, Feb 4 2016, 19:46:05)
      [GCC 4.2.1 Compatible Apple LLVM 7.0.2 (clang-700.1.81)] on darwin
      Type "help", "copyright", "credits" or "license" for more information.

      import pyparsing
      Traceback (most recent call last):
      File "<stdin>", line 1, in <module>
      File "/private/tmp/venv3.3/lib/python3.3/site-packages/pyparsing.py", line
      3478, in <module>
      _escapedPunc = Word( _bslash, r"[]-*.$+^?()~ ", exact=2
      ).setParseAction(lambda s,l,t:t[0][1])
      File "/private/tmp/venv3.3/lib/python3.3/site-packages/pyparsing.py", line
      948, in setParseAction
      self.parseAction = list(map(_trim_arity, list(fns)))
      File "/private/tmp/venv3.3/lib/python3.3/site-packages/pyparsing.py", line
      808, in _trim_arity
      this_line = extract_stack()[-1]
      File "/private/tmp/venv3.3/lib/python3.3/site-packages/pyparsing.py", line
      793, in extract_stack
      return [(frame_summary.filename, frame_summary.lineno)]
      AttributeError: 'tuple' object has no attribute 'filename'

      Workaround

      Using Python 3.5 or importing pyparsing 2.1.1 does not fail.

      $ python3.5 -V
      Python 3.5.1
      $ python3.5 -m venv venv3.5
      $ . venv3.5/bin/activate
      (venv3.5) $ pip install pyparsing==2.1.2
      (venv3.5) $ python
      Python 3.5.1 (default, Apr 18 2016, 03:49:24)
      [GCC 4.2.1 Compatible Apple LLVM 7.0.2 (clang-700.1.81)] on darwin
      Type "help", "copyright", "credits" or "license" for more information.

      import pyparsing

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      Related

      Bugs: #95

      alternate

  • Paul McGuire

    Paul McGuire - 2016-05-11
    • status: open --> closed-fixed
     

  • Paul McGuire

    Paul McGuire - 2016-05-11

    Fixed in 2.1.3, just released

     

  • orangain

    orangain - 2016-05-11

    Thanks for the prompt fix! I confirmed the problem was fixed in 2.1.3.

    I agree with The Compiler and also recommend you to use tox. Using tox, people who have an interest in pyparsing can easily run tests by the simple command tox.

    tox.ini in pyparsing will be simple enough like:

    [tox]
envlist = py26, py27, py33, py34, py35

[testenv]
commands = {envpython} unitTests.py
     

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