What represents a decimal number in Python?

What represents a decimal number in Python?

• A. Whole numbers only
• B. A number with digits after a decimal point
• C. Numbers written in exponential form
• D. Binary representation

Answer: (B)

A decimal number in Python refers specifically to a number that includes a fractional component, which is represented by digits that appear after a decimal point. This format allows for more precise representation of quantities that are not whole numbers, such as 3.14 or -0.001. In Python, decimal numbers can be created simply by including a decimal point in a number. For instance, the value 5.0 is also treated as a decimal number, even though it represents a whole number in this case. The presence of the decimal indicates that the number should be treated in floating-point format, which allows for a wider range of numerical operations, including those needing fractional values. Understanding this concept is key for anyone working with numerical data in Python, as it affects how numbers are parsed, stored, and calculated throughout programming tasks.

A decimal number in Python refers specifically to a number that includes a fractional component, which is represented by digits that appear after a decimal point. This format allows for more precise representation of quantities that are not whole numbers, such as 3.14 or -0.001.

In Python, decimal numbers can be created simply by including a decimal point in a number. For instance, the value 5.0 is also treated as a decimal number, even though it represents a whole number in this case. The presence of the decimal indicates that the number should be treated in floating-point format, which allows for a wider range of numerical operations, including those needing fractional values.

Understanding this concept is key for anyone working with numerical data in Python, as it affects how numbers are parsed, stored, and calculated throughout programming tasks.