AttributeError: module ‘math’ has no attribute ‘sine’

The error message:

AttributeError: module 'math' has no attribute 'sine'

occurs when you try to access an attribute (function, variable, or object) that does not exist in the math module.

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1. Causes and Solutions

Cause 1: Typo in Function Name

The Python math module provides a sin() function, not sine().

Incorrect Code:

import math
print(math.sine(30))  # 'sine' does not exist

Error Output:

AttributeError: module 'math' has no attribute 'sine'

Solution: Use the Correct Function Name

import math
print(math.sin(math.radians(30)))  # Use math.sin() and convert degrees to radians

Output: 0.5

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Cause 2: Importing the Wrong Module

If you have a local file named math.py, Python might be importing it instead of the built-in math module.

Incorrect Scenario:

• You have a file math.py in your project.
• Python imports your file instead of the built-in module.

Solution:

1. Check for a Local File Named math.py
   • If it exists, rename it (e.g., my_math.py).
2. Check the Import Path import math print(math.__file__) # Check which file is being imported If it shows a local file instead of Python’s standard library, delete or rename it.

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Cause 3: Importing a Module Incorrectly

If you accidentally assign a variable named math, it will overwrite the module.

Incorrect Code:

import math
math = 10  # Overwrites the module!
print(math.sin(30))  # Error!

Solution: Avoid Overwriting Module Names

import math
print(math.sin(math.radians(30)))  # No error

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2. Best Practices to Avoid AttributeError

Use dir(math) to check available functions

import math
print(dir(math))  # Lists all valid attributes

Avoid naming variables or files as built-in module names
Check for typos in function names