拦截来自第三方代码的消息

如中所述 "Python Gotchas" ,您可以使用打开“异常” gdal.UseExceptions() ,例如:

from osgeo import gdal

dsrc = gdal.Open('nonexist')
# ... silence

gdal.UseExceptions()

dsrc = gdal.Open('nonexist')
# Traceback (most recent call last):
#   File "<interactive input>", line 1, in <module>
# RuntimeError: `nonexist' does not exist in the file system,
# and is not recognised as a supported dataset name.

你可以随时使用 try except block获取实际错误消息字符串:

try:
    dsrc = gdal.Open('nonexist')
except RuntimeError as e:
    print(str(e))

它将打印错误消息:

`文件系统中不存在“nonlist”, 并且未被识别为支持的数据集名称。