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Questions and Answers
What is a global constant in Python?
What is a global constant in Python?
- A variable that is defined within a class and can be accessed by all its methods
- A variable that can be changed throughout the program
- A variable that is defined outside of any function and can be accessed throughout the program (correct)
- A variable that can only be used within a specific function
Where should global constants be defined in Python?
Where should global constants be defined in Python?
- Outside of any function or class (correct)
- Inside a loop
- Inside a class
- Inside a specific function
Can the value of a global constant be changed in Python?
Can the value of a global constant be changed in Python?
- No, it remains constant throughout the program (correct)
- Yes, it can be changed at any point in the program
- No, it can only be used within a class
- Yes, but only within a specific function
Global constants in Python can be defined using the 'const' keyword.
Global constants in Python can be defined using the 'const' keyword.
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Global constants in Python are declared outside of any function or class.
Global constants in Python are declared outside of any function or class.
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The value of a global constant in Python can be changed during runtime.
The value of a global constant in Python can be changed during runtime.
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Study Notes
Global Constants in Python
- A global constant in Python is a variable whose value remains unchanged throughout the program.
- Global constants should be defined at the top-level of a module, outside of any function or class.
- There is no 'const' keyword in Python, and global constants are simply defined using uppercase letters and underscores (e.g., MY_CONSTANT).
- Despite the convention, the value of a global constant can be changed during runtime, but it's discouraged to do so to maintain code readability and maintainability.
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