I am running Python on a Windows machine at the following path: C:\WinPython-64bit-3.4.4.1 I am trying to upgrade to the latest version of pandas (currently running '0.17.1') but am having problems. I have looked at previous posts and have tried on the command line using : c:/>pip install --upgrade pandas but just got 'pip is not recognised as an internal or external command, operable program or batch file'. Continue reading...