log file while installation : 

Ignoring dnspython3: markers 'python_version == "3.4"' don't match your environment
Collecting libvirt-python===1.3.2 (from -c /opt/stack/requirements/upper-constraints.txt (line 174))
  Using cached libvirt-python-1.3.2.tar.gz
Building wheels for collected packages: libvirt-python
  Running setup.py bdist_wheel for libvirt-python ... error
  Complete output from command /usr/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-xh_FLM/libvirt-python/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" bdist_wheel -d /tmp/tmpOCRHinpip-wheel- --python-tag cp27:
  running bdist_wheel
  running build
  /usr/bin/pkg-config --print-errors --atleast-version=0.9.11 libvirt
  /usr/bin/python generator.py libvirt /usr/share/libvirt/api/libvirt-api.xml
  Found 413 functions in /usr/share/libvirt/api/libvirt-api.xml
  Found 0 functions in libvirt-override-api.xml
  Generated 341 wrapper functions
  Missing type converters:
  virTypedParameterPtr:1
  virTypedParameterPtr *:2
  virConnectStoragePoolEventGenericCallback:1
  ERROR: failed virConnectStoragePoolEventRegisterAny
  ERROR: failed virDomainGetGuestVcpus
  ERROR: failed virDomainGetPerfEvents
  ERROR: failed virDomainSetPerfEvents
  error: command '/usr/bin/python' failed with exit status 1

  ----------------------------------------
  Failed building wheel for libvirt-python
  Running setup.py clean for libvirt-python
Failed to build libvirt-python
Installing collected packages: libvirt-python
  Running setup.py install for libvirt-python ... error
    Complete output from command /usr/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-xh_FLM/libvirt-python/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-q2WT4g-record/install-record.txt --single-version-externally-managed --compile:
    running install
    running build
    /usr/bin/pkg-config --print-errors --atleast-version=0.9.11 libvirt
    /usr/bin/python generator.py libvirt /usr/share/libvirt/api/libvirt-api.xml
    Found 413 functions in /usr/share/libvirt/api/libvirt-api.xml
    Found 0 functions in libvirt-override-api.xml
    Generated 341 wrapper functions
    Missing type converters:
    virTypedParameterPtr:1
    virTypedParameterPtr *:2
    virConnectStoragePoolEventGenericCallback:1
    ERROR: failed virConnectStoragePoolEventRegisterAny
    ERROR: failed virDomainGetGuestVcpus
    ERROR: failed virDomainGetPerfEvents
    ERROR: failed virDomainSetPerfEvents
    error: command '/usr/bin/python' failed with exit status 1

    ----------------------------------------
Command "/usr/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-xh_FLM/libvirt-python/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-q2WT4g-record/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /tmp/pip-build-xh_FLM/libvirt-python/
+inc/python:pip_install:1                  exit_trap
+./stack.sh:exit_trap:475                  local r=1
++./stack.sh:exit_trap:476                  jobs -p
+./stack.sh:exit_trap:476                  jobs=
+./stack.sh:exit_trap:479                  [[ -n '' ]]
+./stack.sh:exit_trap:485                  kill_spinner
+./stack.sh:kill_spinner:371               '[' '!' -z '' ']'
+./stack.sh:exit_trap:487                  [[ 1 -ne 0 ]]
+./stack.sh:exit_trap:488                  echo 'Error on exit'
Error on exit
+./stack.sh:exit_trap:489                  generate-subunit 1488721125 679 fail
+./stack.sh:exit_trap:490                  [[ -z /opt/stack/logs ]]
+./stack.sh:exit_trap:493                  /home/nataraj/devstack/tools/worlddump.py -d /opt/stack/logs
World dumping... see /opt/stack/logs/worlddump-2017-03-05-135005.txt for details
+./stack.sh:exit_trap:499                  exit 1