Which statement is used to create an infinite loop in Python intentionally?
- break
- for i in range(10):
- if condition:
- while True:
To create an intentional infinite loop in Python, you can use the while True: statement. It will continue to execute the code block indefinitely until explicitly interrupted.
Which loop is most appropriate when the number of iterations is known beforehand?
- do-while
- for
- foreach
- while
The 'for' loop is most appropriate when the number of iterations is known beforehand. It is often used to iterate over a sequence or a range of values.
Which control structure allows the checking of multiple expressions for truth value and executing a block of code as soon as one of the conditions evaluates to true?
- for loop
- if-elif-else
- switch-case
- while loop
The if-elif-else control structure allows the checking of multiple expressions for truth value. It executes the block of code associated with the first true condition and then exits the structure.
Which Python library is typically used for parsing and generating JSON data?
- json
- jsondata
- jsonlib
- pyjson
The json library in Python is typically used for parsing and generating JSON (JavaScript Object Notation) data. JSON is a widely used data interchange format in web development and data processing.
You're setting up a new development environment and need multiple versions of Python. Which tool would be most suitable for managing multiple Python versions?
- Anaconda
- PyEnv
- Python Version Manager (PVM)
- Virtual Environment
PyEnv is a tool specifically designed for managing multiple versions of Python. It allows you to easily switch between different Python versions within your development environment. Virtual environments are used for isolating dependencies but not for managing different Python versions. Anaconda is a distribution of Python but doesn't focus solely on managing versions. PVM is not a commonly used tool.
One primary use case of tuples in Python programming is for _______ of multiple values.
- Indexing
- Iterating
- Packing
- Sorting
Tuples are often used for packing multiple values into a single entity, making it useful for tasks like returning multiple values from a function.
To get a deep copy of nested lists, the copy module provides the _______ method.
- copy.deep()
- copy.deep_copy()
- copy.deepcopy()
- copy.nested_copy()
To create a deep copy of nested lists in Python, you can use the copy.deepcopy() method from the copy module. It ensures that nested structures are fully duplicated, avoiding any shared references.
What does the as keyword do in the context of importing modules in Python?
- Creates an alias for the module
- Renames the imported function
- Renames the module
- Specifies the module's version
The as keyword creates an alias for the imported module, allowing you to use a different name when referencing it in your code. This can be useful for avoiding naming conflicts.
If a class has the slots attribute defined, it means the instances of that class will not have a _______ dictionary.
- attributes
- dict
- namespace
- slots
If a class has the slots attribute defined, it means the instances of that class will not have a 'dict' dictionary. The 'slots' attribute restricts the instance to only store attributes explicitly listed in 'slots'.
You are building a recommendation engine and have a set of products bought by User A and another set for User B. To recommend new products to User A based on User B's purchases, which set operation would you use considering you don't want to recommend products User A has already bought?
- Difference
- Intersection
- Symmetric Difference
- Union
To recommend new products to User A based on User B's purchases while avoiding duplicates, you would use the "Difference" set operation. This will provide products in User B's set that are not in User A's set.