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Python Programming - Functions

Exercise : Functions - General Questions
  • Functions - General Questions
71.
What does the __call__ method do in a Python class?
It calls the constructor of the class.
It calls the destructor of the class.
It allows an instance of the class to be called as a function.
It checks if an instance is callable.
Answer: Option
Explanation:
The __call__ method in a Python class allows an instance of the class to be called as if it were a function.
72.
What is the purpose of the os.path.join() function?
To join two strings together.
To concatenate two lists.
To join path components intelligently.
To join elements in a tuple.
Answer: Option
Explanation:
The os.path.join() function in Python is used to join path components intelligently, taking care of the correct path separator.
73.
What is the purpose of the functools.wraps decorator?
To create wrapper functions.
To wrap an iterable.
To preserve the original metadata of a decorated function.
To wrap a class method.
Answer: Option
Explanation:
The functools.wraps decorator in Python is used to preserve the original metadata of a decorated function, such as its name and docstring.
74.
What is the purpose of the **kwargs in a function definition?
To indicate a keyword argument.
To specify default values for arguments.
To allow the function to accept a variable number of keyword arguments.
To define a dictionary of arguments.
Answer: Option
Explanation:
The **kwargs in a function definition allows the function to accept a variable number of keyword arguments, which are passed as a dictionary.
75.
What is the purpose of the __enter__ and __exit__ methods in a Python class?
To define the initialization and cleanup methods of a class.
To define methods for adding and removing elements in a class.
To create context managers for resource management.
To define methods for comparison operations in a class.
Answer: Option
Explanation:
The __enter__ and __exit__ methods in a Python class are used to create context managers for resource management, allowing proper setup and cleanup.
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