Downloading/unpacking cx-oracle
  Running setup.py egg_info for package cx-oracle

Installing collected packages: cx-oracle
  Running setup.py install for cx-oracle
    building 'cx_Oracle' extension
    error: Unable to find vcvarsall.bat
    Complete output from command C:\Python27\python.exe -c "import setuptools;__file__='C:\\Windows\\system32\\build\\cx-oracle\\setup.py';exec(compile(open(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --single-version-externally-managed --record c:\users\DJang~1\appdata\local\temp\pip-j0wsur-record\install-record.txt:
    running install

running build

running build_ext

building 'cx_Oracle' extension

error: Unable to find vcvarsall.bat

----------------------------------------
Command C:\Python27\python.exe -c "import setuptools;__file__='C:\\Windows\\system32\\build\\cx-oracle\\setup.py';exec(compile(open(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --single-version-externally-managed --record c:\users\DJANG~1\appdata\local\temp\pip-j0wsur-record\install-record.txt failed with error code 1
Storing complete log in C:\Users\DJango\AppData\Roaming\pip\pip.log