pip in windows

G:\Python35-32\Scripts>pip install Flask
Fatal error in launcher: Unable to create process using '"'

G:\Python35-32\Scripts>cd ..

G:\Python35-32>python -m pip install Flask
Collecting Flask
Downloading Flask-0.12.2-py2.py3-none-any.whl (83kB)
100% |████████████████████████████████| 92kB 608kB/s
Collecting Jinja2>=2.4 (from Flask)
Downloading Jinja2-2.9.6-py2.py3-none-any.whl (340kB)
100% |████████████████████████████████| 348kB 1.6MB/s
Collecting Werkzeug>=0.7 (from Flask)
Downloading Werkzeug-0.12.2-py2.py3-none-any.whl (312kB)
100% |████████████████████████████████| 317kB 1.5MB/s
Collecting itsdangerous>=0.21 (from Flask)
Downloading itsdangerous-0.24.tar.gz (46kB)
100% |████████████████████████████████| 51kB 1.2MB/s
Collecting click>=2.0 (from Flask)
Downloading click-6.7-py2.py3-none-any.whl (71kB)
100% |████████████████████████████████| 71kB 2.3MB/s
Collecting MarkupSafe>=0.23 (from Jinja2>=2.4->Flask)
Downloading MarkupSafe-1.0.tar.gz
Installing collected packages: MarkupSafe, Jinja2, Werkzeug, itsdangerous, click, Flask
Running setup.py install for MarkupSafe ... done
Running setup.py install for itsdangerous ... done
Successfully installed Flask-0.12.2 Jinja2-2.9.6 MarkupSafe-1.0 Werkzeug-0.12.2 click-6.7 itsdangerous-0.24
You are using pip version 8.1.2, however version 9.0.1 is available.
You should consider upgrading via the 'python -m pip install --upgrade pip' command.