How to Compare Numbers in Python?

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In Python, you can compare numbers using the standard comparison operators. Here’s an overview of the comparison operators available in Python:

  • Equal to: ==
  • Not equal to: !=
  • Greater than: >
  • Less than: <
  • Greater than or equal to: >=
  • Less than or equal to: <=

You can use these operators to compare numbers and obtain a boolean result (True or False). Here are some examples:

x = 5
y = 10

print(x == y)  # False
print(x != y)  # True
print(x > y)   # False
print(x < y)   # True
print(x >= y)  # False
print(x <= y)  # True

In this example, we compare the values of x and y using different comparison operators. The result of each comparison is printed, indicating whether the condition is True or False.

You can also compare floating-point numbers in Python. However, keep in mind that due to the nature of floating-point arithmetic, direct equality comparisons (==) may lead to unexpected results due to rounding errors. To compare floating-point numbers, you can use the approach mentioned earlier, which involves defining a tolerance or delta value to account for small differences.

Additionally, Python provides the math.isclose() function in the math module for comparing floating-point numbers with a tolerance. This function allows you to specify relative and absolute tolerances for the comparison.

import math

a = 0.1 + 0.1 + 0.1
b = 0.3

print(math.isclose(a, b))  # True

In this example, the math.isclose() function is used to compare the values of a and b with default tolerances.

Remember to choose the appropriate comparison operator based on your specific requirements, and handle floating-point comparisons with care to account for potential rounding errors.

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