Shapely OSError: Could not find lib c or load any of its variants []

Question

I'm just trying to use the demo code. I run the following in Jupyter Notebook:

from shapely.geometry import shape

Which gives me the following:

OSError                                   Traceback (most recent call last)
<ipython-input-4-cf5b4d0962ea> in <module>()
----> 1 from shapely.geometry import shape

/Users/hkwik/anaconda/lib/python2.7/site-packages/shapely/geometry/__init__.py in <module>()
      2 """
      3 
----> 4 from .base import CAP_STYLE, JOIN_STYLE
      5 from .geo import box, shape, asShape, mapping
      6 from .point import Point, asPoint

/Users/hkwik/anaconda/lib/python2.7/site-packages/shapely/geometry/base.py in <module>()
      7 from ctypes import pointer, c_size_t, c_char_p, c_void_p
      8 
----> 9 from shapely.coords import CoordinateSequence
     10 from shapely.ftools import wraps
     11 from shapely.geos import lgeos, ReadingError

/Users/hkwik/anaconda/lib/python2.7/site-packages/shapely/coords.py in <module>()
      6 from ctypes import byref, c_double, c_uint
      7 
----> 8 from shapely.geos import lgeos
      9 from shapely.topology import Validating
     10 

/Users/hkwik/anaconda/lib/python2.7/site-packages/shapely/geos.py in <module>()
     81         _lgeos = load_dll('geos_c', fallbacks=alt_paths)
     82 
---> 83     free = load_dll('c').free
     84     free.argtypes = [c_void_p]
     85     free.restype = None

/Users/hkwik/anaconda/lib/python2.7/site-packages/shapely/geos.py in load_dll(libname, fallbacks, mode)
     59         raise OSError(
     60             "Could not find lib {0} or load any of its variants {1}.".format(
---> 61                 libname, fallbacks or []))
     62 
     63 _lgeos = None

OSError: Could not find lib c or load any of its variants [].

However, if I run from the interpreter, everything is fine.

Any idea what's going on?

Answer 1

I simply uninstalled Shapely and re-installed it to fix the issue.

python -m pip uninstall shapely

python -m pip install shapely