Added quickrefs for dictionaries, getting started with arrays, for, matrices, other plots, savefig, using python modules.
Splitting a string on whitespace:\\
{\ex \lstinline| str_var.split()|}
Splitting a string using a delimiter. Ex: ";" :\\
{\ex \lstinline| str_var.split(";")|}
Stripping the whitespace around a string:\\
{\ex \lstinline| str_var.strip()|}
Converting a string or float to int:\\
{\ex \lstinline| int(var_name)|}
Converting a string or int into float:\\
{\ex \lstinline| float(var_name)|}