GeoDjango GEOSException error

Question

Trying to install a GeoDjango on my machine. I'm really new to Python and being brought into a project that has been a very tricky install for the other team members. I installed Python 2.7 and GEOS using brew, and running PSQL 9.2.4 but keep getting this error when I try to get the webserver running:

__import__(name)
File "/Users/armynante/Desktop/uclass-files/uclass-env/lib/python2.7/site
packages/django/contrib/gis/geometry/backend/geos.py", line 1, in <module>
from django.contrib.gis.geos import (
File "/Users/armynante/Desktop/uclass-files/uclass-env/lib/python2.7/site
packages/django/contrib/gis/geos/__init__.py", line 6, in <module>
from django.contrib.gis.geos.geometry import GEOSGeometry, wkt_regex, hex_regex
File "/Users/armynante/Desktop/uclass-files/uclass-env/lib/python2.7/site
packages/django/contrib/gis/geos/geometry.py", line 14, in <module>
from django.contrib.gis.geos.coordseq import GEOSCoordSeq
File "/Users/armynante/Desktop/uclass-files/uclass-env/lib/python2.7/site-
packages/django/contrib/gis/geos/coordseq.py", line 9, in <module>
from django.contrib.gis.geos.libgeos import CS_PTR
File "/Users/armynante/Desktop/uclass-files/uclass-env/lib/python2.7/site-
packages/django/contrib/gis/geos/libgeos.py", line 119, in <module>
_verinfo = geos_version_info()
File "/Users/armynante/Desktop/uclass-files/uclass-env/lib/python2.7/site
packages/django/contrib/gis/geos/libgeos.py", line 115, in geos_version_info
if not m: raise GEOSException('Could not parse version info string "%s"' % ver)
django.contrib.gis.geos.error.GEOSException: Could not parse version info string
"3.4.2-CAPI-1.8.2 r3921"

Cant seem to find anything relevant to this trace on SO or the web. I think it might be a regex failure? I'm currently trying to reinstall PSQL and GEOS to see if I can get it running.

Here is my requirements file:

django==1.4
psycopg2==2.4.4
py-bcrypt==0.4
python-memcached==1.48
south==0.7.3

# Debug Tools
sqlparse==0.1.3
django-debug-toolbar==0.9.1
django-devserver==0.3.1

# Deployment
fabric==1.4

# AWS
# boto==2.1.1
django-storages==1.1.4
django-ses==0.4.1

# ECL
http://packages.elmcitylabs.com/ecl_django-0.5.3.tar.gz#ecl_django
http://packages.elmcitylabs.com/ecl_google-0.2.14.tar.gz#ecl_google
# https://packages.elmcitylabs.com/ecl_tools-0.3.7.tar.gz#ecl_tools
# https://packages.elmcitylabs.com/chargemaster-0.2.19.tar.gz
# https://packages.elmcitylabs.com/ecl_facebook-0.3.12.tar.gz#ecl_facebook
# https://packages.elmcitylabs.com/ecl_twitter-0.3.3.tar.gz#ecl_twitter

# Search
#https://github.com/elmcitylabs/django-haystack/tarball/issue-522#django-haystack
-e git+https://github.com/toastdriven/django-haystack.git#egg=django-haystack

pysolr==2.1.0-beta
# whoosh==2.3.2

# Misc
# PIL
# django-shorturls==1.0.1
# suds==0.4

django-mptt
sorl-thumbnail

stripe
pytz==2013b

Answer 1

This is my solution (obviously it is ugly, like my English, but works). The problem is that the versions string has an white space unwanted in the RegEx.

The error says:

GEOSException: Could not parse version info string "3.4.2-CAPI-1.8.2 r3921"

And the geos_version_info warns:

Regular expression should be able to parse version strings such as '3.0.0rc4-CAPI-1.3.3', '3.0.0-CAPI-1.4.1' or '3.4.0dev-CAPI-1.8.0'

Edit this file: site-packages/django/contrib/gis/geos/libgeos.py

Look for the function: geos_version_info

And change this line:

ver = geos_version().decode()

With this line:

ver = geos_version().decode().split(' ')[0]

Answer 2

In the latest GEOS install, the above answer didn't work... but was close to the problem.

I changed the regex right above the geos_version_info(): from:

version_regex = re.compile(r'^(?P<version>(?P<major>\d+)\.(?P<minor>\d+)\.(?P<subminor>\d+))((rc(?P<release_candidate>\d+))|dev)?-CAPI-(?P<capi_version>\d+\.\d+\.\d+)$')

to be:

version_regex = re.compile(r'^(?P<version>(?P<major>\d+)\.(?P<minor>\d+)\.(?P<subminor>\d+))((rc(?P<release_candidate>\d+))|dev)?-CAPI-(?P<capi_version>\d+\.\d+\.\d+).*$')

Notice the .* added to the end of the regex.

Answer 3

I think this is broken again. A recent upgrade on our FreeBSD server led to this error:

django.contrib.gis.geos.error.GEOSException: Could not parse version info string "3.6.2-CAPI-1.10.2 4d2925d6"

Looks like the regex in Django's libgeos.py needs to be updated again to account for this different syntax. Nachopro's solution still serves as a workaround.

Answer 4

It appears that this has been fixed in Django as of last March or so. See also Django bug 20036. So upgrading to Django 1.5.4 will solve the problem.

Answer 5

For those folks who don't have 3.6.1 previously installed:

1. brew unlink geos
2. Install 3.6.1 with brew install https://raw.githubusercontent.com/Homebrew/homebrew-core/145b22e8330e094ee148861e72e26c03e73d34a1/Formula/geos.rb.
3. brew info geos should show 3.6.1 starred:
   

Answer 6

This can be fixed by trying the following,

brew switch geos 3.6.1

Answer 7

I fixed the issue by installing PostGIS with Postgres using https://postgresapp.com/downloads.html.

1. Install PostGIS (2.2): brew install postgis
2. To unlink geos if version is higher than 3.6.1: brew unlink geos
3. Install Geos (3.6.1): brew install https://raw.githubusercontent.com/Homebrew/homebrew-core/145b22e8330e094ee148861e72e26c03e73d34a1/Formula/geos.rb
4. Switch geos version(latest version is 3.7.2 which is not supported by Django 1.11.3): brew switch geos 3.6.1
5. Login to database and create postgis extensions: CREATE EXTENSION postgis; Test postgis extension: SELECT ST_Distance('LINESTRING(-122.33 47.606, 0.0 51.5)'::geography, 'POINT(-21.96 64.15)'::geography);
6. Check postgis version: SELECT PostGIS_full_version();