Data Types In Python
- In Python, data types are used to define the type of data that a variable can hold.
- Data types in programming represent the kind of value that a variable or expression can hold.
- Let us learn some common data types.
Numeric
- int: Integer type represents whole numbers.
- float: Floating-point type represents real numbers with a fractional part.
- complex: Complex type represents numbers with both a real and an imaginary part.
Set
- Set is an unordered collection of unique elements.
Dictionary
- Represents an unordered collection of key-value pairs, and allows operations like adding, accessing, and removing elements based on keys.
Boolean
- Boolean type represents either True or False.
Sequence
- List: List is an ordered and mutable collection of elements.
- Tuple: Tuple is an ordered and immutable collection of elements.
- String: It represents a sequence of characters and is used to represent textual data.
NUMBERS
- Python provides several numeric data types to represent numbers, including integers (int), floating-point numbers (float), and complex numbers (complex).
1. INTEGERS ('int') :
- Integers represent whole numbers without any fractional part.
- They can be positive or negative.
- They do not include a decimal point.
2. FLOAT ('float') :
- The float data type (float) in Python is used to represent floating-point numbers, which are real numbers with a fractional part.
- Floats can be positive or negative and can include a decimal point.
INT VS FLOAT
- For age , you will use int datatype , there’s nothing like 9.82 years old. One cannot consider age to be a float datatype.
- Integers are commonly used for counting, indexing, and representing discrete quantities.
- Floating-point numbers are used to represent continuous quantities, real-world measurements like price or rate.
- Float is more powerful because it can handle a number with fraction or decimal whereas “int” can’t.
Basic Arithmetic Operations
Rounding and precision
- The round() function is used to round a number to a specified number of decimal places or to the nearest whole number.
3. Complex
- Complex numbers are written with a “j” as the imaginary part.
- Let us consider an example.
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