python - PIP - 'module' object has no attribute 'CDLL' -

for want use "pip" pops following error:

file "/usr/local/lib/python2.7/dist-packages/pip/pep425tags.py", line 188, in have_compatible_glibc      process_namespace = ctypes.cdll (none) attributeerror: 'module' object has no attribute 'cdll'