plotnine compilation issue in Python 3.7

I am not sure about the following error that I get when trying to install plotnine in the environment of Python 3.7. Do I miss a pre-requirement or is this issue related with the one describe here, which caused by an old cython version that was used for the build?:
pandas-dev/pandas#21785

sudo pip install plotnine

...PRUNED BY ME...

    In file included from /usr/include/python3.7m/Python.h:128,
                     from _proj.c:4:
    /usr/include/python3.7m/abstract.h:500:17: note: declared here
     PyAPI_FUNC(int) PyObject_AsWriteBuffer(PyObject *obj,
                     ^~~~~~~~~~~~~~~~~~~~~~
    _proj.c: In function ‘__Pyx_ExceptionSave’:
    _proj.c:7421:21: error: ‘PyThreadState’ {aka ‘struct _ts’} has no member named ‘exc_type’; did you mean ‘curexc_type’?
         *type = tstate->exc_type;
                         ^~~~~~~~
                         curexc_type
    _proj.c:7422:22: error: ‘PyThreadState’ {aka ‘struct _ts’} has no member named ‘exc_value’; did you mean ‘curexc_value’?
         *value = tstate->exc_value;
                          ^~~~~~~~~
                          curexc_value
    _proj.c:7423:19: error: ‘PyThreadState’ {aka ‘struct _ts’} has no member named ‘exc_traceback’; did you mean ‘curexc_traceback’?
         *tb = tstate->exc_traceback;
                       ^~~~~~~~~~~~~
                       curexc_traceback
    _proj.c: In function ‘__Pyx_ExceptionReset’:
    _proj.c:7435:24: error: ‘PyThreadState’ {aka ‘struct _ts’} has no member named ‘exc_type’; did you mean ‘curexc_type’?
         tmp_type = tstate->exc_type;
                            ^~~~~~~~
                            curexc_type
    _proj.c:7436:25: error: ‘PyThreadState’ {aka ‘struct _ts’} has no member named ‘exc_value’; did you mean ‘curexc_value’?
         tmp_value = tstate->exc_value;
                             ^~~~~~~~~
                             curexc_value
    _proj.c:7437:22: error: ‘PyThreadState’ {aka ‘struct _ts’} has no member named ‘exc_traceback’; did you mean ‘curexc_traceback’?
         tmp_tb = tstate->exc_traceback;
                          ^~~~~~~~~~~~~
                          curexc_traceback
    _proj.c:7438:13: error: ‘PyThreadState’ {aka ‘struct _ts’} has no member named ‘exc_type’; did you mean ‘curexc_type’?
         tstate->exc_type = type;
                 ^~~~~~~~
                 curexc_type
    _proj.c:7439:13: error: ‘PyThreadState’ {aka ‘struct _ts’} has no member named ‘exc_value’; did you mean ‘curexc_value’?
         tstate->exc_value = value;
                 ^~~~~~~~~
                 curexc_value
    _proj.c:7440:13: error: ‘PyThreadState’ {aka ‘struct _ts’} has no member named ‘exc_traceback’; did you mean ‘curexc_traceback’?
         tstate->exc_traceback = tb;
                 ^~~~~~~~~~~~~
                 curexc_traceback
    _proj.c: In function ‘__Pyx_GetException’:
    _proj.c:7483:24: error: ‘PyThreadState’ {aka ‘struct _ts’} has no member named ‘exc_type’; did you mean ‘curexc_type’?
         tmp_type = tstate->exc_type;
                            ^~~~~~~~
                            curexc_type
    _proj.c:7484:25: error: ‘PyThreadState’ {aka ‘struct _ts’} has no member named ‘exc_value’; did you mean ‘curexc_value’?
         tmp_value = tstate->exc_value;
                             ^~~~~~~~~
                             curexc_value
    _proj.c:7485:22: error: ‘PyThreadState’ {aka ‘struct _ts’} has no member named ‘exc_traceback’; did you mean ‘curexc_traceback’?
         tmp_tb = tstate->exc_traceback;
                          ^~~~~~~~~~~~~
                          curexc_traceback
    _proj.c:7486:13: error: ‘PyThreadState’ {aka ‘struct _ts’} has no member named ‘exc_type’; did you mean ‘curexc_type’?
         tstate->exc_type = local_type;
                 ^~~~~~~~
                 curexc_type
    _proj.c:7487:13: error: ‘PyThreadState’ {aka ‘struct _ts’} has no member named ‘exc_value’; did you mean ‘curexc_value’?
         tstate->exc_value = local_value;
                 ^~~~~~~~~
                 curexc_value
    _proj.c:7488:13: error: ‘PyThreadState’ {aka ‘struct _ts’} has no member named ‘exc_traceback’; did you mean ‘curexc_traceback’?
         tstate->exc_traceback = local_tb;
                 ^~~~~~~~~~~~~
                 curexc_traceback
    error: command 'gcc' failed with exit status 1

Thanks for any help. And keep up the great project, I am a happy user of plotnine for more than a year.

I do not think this is a plotnine issue, plotnine is pure python. It should be one of the dependencies that has cython code. Try installing pandas first then plotnine.

@has2k1

@has2k1 Thanks for your answer. After some research and fiddling around I assume the issue is caused by the package pyproj, which is a dependency of geopandas, which is itself a dependency of plotnine. Any attempt to directly install pyproj fails because it probably uses old, precompiled cython files (see pyproj4/pyproj#136).

The simple solution is to install plotnine without further dependencies (i.e. pyproj) using the following command: pip install -U --no-deps plotnine

Workaround pyproj not installing for Python 3.7

There is no hint of when pyproj will make a release that fixes issue. We are at their mercy.

Matplotlib 3.0.0 will come out soon (the release candidates are up) and it is for Python 3.5 and above. A Plotnine release that also supports Python 3.5 and above has to come out before or soon after Matplotlib, but with the pyproj blocker we have to make choices. So for the next release of Plotnine, on Python 3.7 only, it will install without the geopandas requirement (it pulls in pyproj) hence geom_map will not work.

Made the comment also in conda-forge/plotnine-feedstock#6: even without this pyproj / python 3.7 issue, I would personally advice against having geopandas as a required dependency (at least at this moment; and I am the geopandas maintainer, so I am allowed to say this :-)).
You can still have it as an optional dependency of course, and give an informative error message when people try geom_map without having geopandas installed.

The problem with geopandas is that it pulls in the complete gdal stack which is still, although it has improved a lot over the last years, often problematic to install.

@jorisvandenbossche

@jorisvandenbossche, thank you for the advice, I will do as suggested.

Remove geopandas as an installation requirement

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plotnine compilation issue in Python 3.7 #178

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plotnine compilation issue in Python 3.7 #178

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has2k1 commented on Aug 20, 2018

aflueckiger commented on Aug 20, 2018

has2k1 commented on Sep 2, 2018

jorisvandenbossche commented on Sep 12, 2018

has2k1 commented on Sep 12, 2018

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