Import all definitions to current name-space:\\
{\ex \lstinline|    from scipy import *|}

Import few definitions to current name-space:\\
{\ex \lstinline|    from scipy import linspace, pi, sin|}

Import a module as a new name-space:\\
{\ex \lstinline|    import scipy|}

Few standard python modules:\\
{\ex \lstinline|    Math: math, random|}
{\ex \lstinline|    Internet: urllib2, smtplib|}
{\ex \lstinline|    System: sys|}
{\ex \lstinline|    OS: os|}
{\ex \lstinline|    Regular Expression: re|}
{\ex \lstinline|    Compression: gzip, zipfile, tarfile|}