Why is it important to know the properties and applications of each data structure?

Knowing the properties and applications of each data structure is important because the correct choice of data structure directly affects the efficiency and performance of a program. Different data structures are optimal for different tasks:

• Lists are convenient for frequent insertions and deletions
• Arrays provide quick access by index
• Hash tables allow fast element lookup by key
• Trees are suitable for ordered storage and search

Understanding these features helps in choosing a structure that minimizes execution time and memory consumption. For example, if you need to quickly search for elements, it's better to use a dictionary (dict) rather than a list. In Python, this is especially important because some operations on large data can significantly slow down the program if the wrong structure is chosen.