Red Hat EL7.3集群中Python3.5导入gdal_array失败问题求助

Hey there, I’ve run into this exact issue before with older GDAL versions on RHEL systems. Let’s break down what’s going on and how to fix it.

Your Setup & Error Details #

You’re running Red Hat EL 7.3 with GDAL 2.2.4 and Python 3.5. You can successfully import gdal, osgeo, and osr, but importing gdal_array throws an error. Your code and truncated traceback look like this:

import gdal
import osgeo
import osr
from osgeo import gdal_array

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/.local/lib/python3.5/site-packages/osgeo/gdal_array.py", line 28, in <module>
    _gdal_array = swig_import_helper()
  File "/.local/lib/python3.5/site-packages/osgeo/gdal_array.py", line 24, in swig_import_helper
    _mod = imp.load_module('_gdal_array', fp, pathname, description)
  File "/usr/lib64/python3.5/imp.py", line 242, in load_module
    return load_dynamic(name, filename, file)
  File "/usr/lib64/python3.5/imp.py", line 342, in load_dynamic
    return _load(spec)
ImportError: libgdal.so.20: cannot open shared object file: No such file or directory

(Note: The full error almost always points to a missing shared library or mismatched Python bindings)

Solutions to Try #

• Fix the Shared Library Path
  The most common culprit is that your system can’t locate the GDAL shared library. First, find where libgdal.so.20 lives:

  find / -name libgdal.so.20 2>/dev/null
  

  Once you get the path (e.g., /usr/local/lib), add it to your library path temporarily:

  export LD_LIBRARY_PATH=/path/to/gdal/lib:$LD_LIBRARY_PATH
  

  To make this change permanent, add that line to your ~/.bashrc or ~/.bash_profile and log back in to apply it.

• Recompile GDAL with Python & Array Bindings
  If you installed GDAL from source, you might have skipped enabling the Python array bindings. First, install required dependencies:

  yum install python35-devel numpy
  

  Then recompile GDAL with the correct flags:

  ./configure --with-python --enable-shared
  make clean && make && make install
  

  After compiling, navigate to the swig/python directory in the GDAL source and install the Python bindings properly:

  cd swig/python
  python3 setup.py install
  

• Align Python GDAL Package with System GDAL
  Sometimes the GDAL Python package installed via pip doesn’t match your system’s GDAL version. Uninstall the existing package first:

  pip3 uninstall gdal
  

  Then install the exact version matching your system’s GDAL:

  pip3 install gdal==2.2.4
  

• Try Alternative Import Syntax
  Older GDAL versions sometimes use different import paths for gdal_array. Give these alternatives a shot:

  import gdal_array
  

  Or:

  from osgeo.gdal_array import *
  

内容的提问来源于stack exchange，提问作者Chris G