The only thing I can come up with is to copy the layerfile to another location and see if the datasource is still pointing to the same location (absolute) or not (relative):
def main():
import arcpy
import os
from shutil import copyfile
tmp_folder = r'C:\GeoNet\RelativePath\tmp'
lyrs = [r'C:\GeoNet\RelativePath\Layerfile_relative_path.lyr',
r'C:\GeoNet\RelativePath\Layerfile_absolute_path.lyr']
for lyr_file in lyrs:
print "\n", lyr_file
lyr = arcpy.mapping.Layer(lyr_file)
datasource_before = lyr.dataSource
print "before:", datasource_before
lyr_file_dest = os.path.join(tmp_folder, os.path.split(lyr_file)[1])
print lyr_file_dest
copyfile(lyr_file, lyr_file_dest)
lyr_tmp = arcpy.mapping.Layer(lyr_file_dest)
datasource_after = lyr_tmp.dataSource
print "after :", datasource_after
if datasource_before == datasource_after:
print " - Datasource is Absolute path"
else:
print " - Datasource is Relative path"
if __name__ == '__main__':
main()
This yields:
C:\GeoNet\RelativePath\Layerfile_relative_path.lyr
before: C:\Fabiola\ManglaresInvemar\gdb\ManglarCentroPob.gdb\Manglares
C:\GeoNet\RelativePath\tmp\Layerfile_relative_path.lyr
after : C:\GeoNet\Fabiola\ManglaresInvemar\gdb\ManglarCentroPob.gdb\Manglares
- Datasource is Relative path
C:\GeoNet\RelativePath\Layerfile_absolute_path.lyr
before: C:\Fabiola\ManglaresInvemar\gdb\ManglarCentroPob.gdb\Manglares
C:\GeoNet\RelativePath\tmp\Layerfile_absolute_path.lyr
after : C:\Fabiola\ManglaresInvemar\gdb\ManglarCentroPob.gdb\Manglares
- Datasource is Absolute path
