Majorly used Data Structures in python are as follows: List Set Tuple Dictionary String Numbers(int, float, decimal) One of the major things in python discussed is whether the data structure is mutable or immutable. What do this terms mean? In simple terms, Immutable means value cannot be changed after it is assigned to a variable. Whereas, In mutable data type value can be changed after assignment. Hmm, What ??? This is still not clear these are merely dictionary definitions I am blabbering. Amazon.in Widgets