Error while install FiPy "Command "python setup.py egg_info" failed with error code 1"

Question

I'm trying to install FiPy on Python 3.6. and ran into trouble. I followed the installation instruction from the NIST website: https://www.ctcms.nist.gov/fipy/INSTALLATION.html

But at the last step pip install fipy I get an error that I don't understand:

(MYFIPYENV) >pip install fipy Collecting fipy Cache entry deserialization failed, entry ignored Cache entry deserialization failed, entry ignored
Downloading FiPy-3.1.3.tar.gz
Complete output from command python setup.py egg_info:
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "C:\Users\AppData\Local\Temp\pip-build-9xzf0bmv\fipy\setup.py",
line 61
    except ImportError, e:
                      ^
SyntaxError: invalid syntax

---------------------------------------- 
Command "python setup.py egg_info" failed with error code 1 in C:\Users\AppData\Local\Temp\pip-build-9xzf0bmv\fipy\ Cache entry deserialization failed, entry ignored

Could someone please tell me what's this error about and how to fix it?

To not dupplicate the question I tried following hints:

>pip upgrade 
>pip install --upgrade setuptools
>pip install ez_setup

Working on Windows 10. Thanks in advance!

jeguyer · Accepted Answer · 2018-03-01 12:56:06Z

1

FiPy is a Python 2 package.

You can convert the code to Py3k with 2to3: https://www.ctcms.nist.gov/fipy/documentation/USAGE.html#running-under-python-3
You can use conda to maintain side-by-side Py2 and Py3k installations. Conda is our recommended pathway these days, anyway. Those instructions need to be modified to ask for a specific python version:

conda create --name <MYFIPYENV> --channel guyer --channel conda-forge fipy nomkl python=2.7

answered Mar 1, 2018 at 12:56

jeguyer

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11 Comments

TThe Over a year ago

I converted the code yet however the installation failed. Tried your second hint and got: (base) C:\Users\>conda create --name MYFIPYENV --channel guyer --channel conda-forge fipy nomkl python=2.7 Solving environment: failed PackagesNotFoundError: The following packages are not available from current channels: - fipy - gmsh - fipy - pysparse - fipy - trilinos - fipy - nomkl - nomkl

jeguyer Over a year ago

Yes, I see that the conda installation does not work on Windows. I'll investigate. What does "I converted the code yet however the installation failed" mean? I just did a clean python 3.6 install on a Windows VM, ran 2to3, and installed. The code runs. What happened when you tried? What exact steps did you take?

TThe Over a year ago

C:\Users\\Diss_py\conda\envs\envfipy\Scripts>2to3 --write . RefactoringTool: Skipping optional fixer: buffer RefactoringTool: Skipping optional fixer: idioms RefactoringTool: Skipping optional fixer: set_literal RefactoringTool: Skipping optional fixer: ws_comma RefactoringTool: No changes to .\2to3-script.py RefactoringTool: No changes to .\easy_install-script.py RefactoringTool: Refactored .\f2py.py --- .\f2py.py (original) +++ .\f2py.py (refactored)

TThe Over a year ago

@@ -1,6 +1,6 @@ #!C:/Users/Diss_py/conda/envs/envfipy\python.exe # See cens.ioc.ee/projects/f2py2e -from future import division, print_function import os import sys RefactoringTool: No changes to .\futurize-script.py RefactoringTool: No changes to .\idle-script.py RefactoringTool: No changes to .\mayavi2-script.py RefactoringTool: No changes to .\pasteurize-script.py RefactoringTool: No changes to .\pip-script.py RefactoringTool: No changes to .\pydoc-script.py RefactoringTool: No changes to .\pygmentize-script.py RefactoringTool: No changes to .\tvtk_doc-script.py

TThe Over a year ago

RefactoringTool: No changes to .\wheel-script.py RefactoringTool: Files that were modified: RefactoringTool: .\2to3-script.py RefactoringTool: .\easy_install-script.py RefactoringTool: .\f2py.py RefactoringTool: .\futurize-script.py RefactoringTool: .\idle-script.py RefactoringTool: .\mayavi2-script.py RefactoringTool: .\pasteurize-script.py RefactoringTool: .\pip-script.py RefactoringTool: .\pydoc-script.py RefactoringTool: .\pygmentize-script.py RefactoringTool: .\tvtk_doc-script.py RefactoringTool: .\wheel-script.py

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phd · Accepted Answer · 2018-02-28 12:58:52Z

1

except ImportError, e:

The syntax is for Python 2 only. Seems FiPi can be used only with Py2. Or at least can only be installed with Py2 using pip. Try other installation methods.

answered Feb 28, 2018 at 12:58

phd

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3 Comments

TThe Over a year ago

Do you have any suggestions? I'm kind of lost.

phd Over a year ago

Use conda for installation. Or use Python 2. Or update the code to be Py3-compatible. Or ask the authors to update code.

jeguyer Over a year ago

The authors have been asked, and are not unsympathetic, but it's not been a priority because none of the good (3rd party) solvers work on Py3k and it's so trivial to run python 2.7 and 3.6 side-by-side with conda.

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