How to find the absolute value in python

How to find the absolute value in Python: 1. Use Python’s built-in function “abs()” to easily calculate the absolute value of a number; 2. Use conditional statements to calculate the absolute value of a number; 3. Use Python’s The math library can use the "fabs()" function to calculate the absolute value of a number; 4. Use the numpy library in Python to calculate the absolute value of numbers and arrays using the "abs()" function; 5. Use the ternary operator in Python to calculate the absolute value of a number.

The operating environment of this article: Windows 10 system, python version 3.11.2, dell g3 computer.

How to find the absolute value in Python:

1. Use the built-in function abs()

You can easily calculate numbers using the Python built-in function abs() absolute value. For example, to calculate the absolute value of the number -100, you can use the following code:

  x = -100
  abs_x = abs(x)
  print(abs_x)

The output will be 100 as shown below

2. Use conditions Statement

We can use conditional statements to calculate the absolute value of a number. If the number is greater than or equal to 0, then its absolute value is itself. Otherwise, the absolute value is equal to its opposite. Here is a sample code:

  x = -102
  if x < 0:
      abs_x = -x
  else:
      abs_x = x
  print(abs_x)

The output will be 102.

In [2]: x = -102
     ...: if x < 0:
     ...:     abs_x = -x
     ...: else:
     ...:     abs_x = x
     ...: print(abs_x)
  102

3. Use the math library

Using the math library in Python, you can use the fabs() function to calculate the absolute value of a number. So, import the math module first, and then the fabs() function returns a floating point number, even if the passed parameter is an integer. Here is a sample code:

  import math
  x = -1024
  abs_x = math.fabs(x)
  print(abs_x)

The output will be 1024.0 as shown below.

  In [2]: import math
     ...: x = -1024
     ...: abs_x = math.fabs(x)
     ...: print(abs_x)
  1024.0

4. Use the numpy library

Using the numpy library in Python, you can use the abs() function to calculate the absolute value of numbers and arrays. The following is a sample code. You can pass in a list for judgment, as shown below:

  import numpy as np
  x = np.array([-1, 2, -3, 4,8,-6])
  abs_x = np.abs(x)
  print(abs_x)

The output will be [1 2 3 4 8 6]. As follows.

 In [5]: import numpy as np
     ...: x = np.array([-1, 2, -3, 4,8,-6])
     ...: abs_x = np.abs(x)
     ...: print(abs_x)
  [1 2 3 4 8 6]

5. Use the ternary operator

The ternary operator in Python can also be used to calculate the absolute value of a number. Here is a sample code:

  x = -10086
  abs_x = x if x >= 0 else -x
  print(abs_x)

The output will be 10086 as shown below.

  In [6]: x = -10086
     ...: abs_x = x if x >= 0 else -x
     ...: print(abs_x)
  10086

In general, the above is a commonly used method to calculate the absolute value of a number in Python. Each method has its advantages, disadvantages and usage scenarios, and you can choose the most appropriate method according to the specific situation.

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