Can you name the main built-in data types used in programming languages?

The main built-in data types in programming languages typically include:

• Integer types (int, long, short, etc.) — for storing whole numbers.
• Floating-point numbers (float, double) — for fractional numbers.
• Boolean type (bool) — for True/False values.
• Characters (char) — for individual symbols.
• Strings (str) — sequences of characters.
• Arrays — ordered collections of elements of the same type.
• Lists, sets, dictionaries (associative arrays) — more complex data structures, often built-in in high-level languages.

For example, in Python, the main types:

x = 10          # int
y = 3.14        # float
flag = True     # bool
s = 'hello'     # str
lst = [1, 2, 3] # list

The main difference is in dimensionality and data structure. Series are convenient for one-dimensional data, DataFrame — for tabular data with multiple features.