Which of the following best describes the difference between break and continue in Python loops?
- 'break' and 'continue' are functionally equivalent.
- 'break' and 'continue' are used for the same purpose.
- 'break' continues the loop, 'continue' ends the loop entirely.
- 'break' ends the loop entirely, 'continue' skips the current iteration and continues with the next.
In Python, the 'break' statement is used to exit the current loop entirely, while 'continue' skips the current iteration and proceeds to the next iteration.
Python's reference implementation is known as _______.
- CPython
- PyInterpreter
- PyRef
- Pythonic
Python's reference implementation is known as CPython. It is the default and most widely used implementation of Python. Understanding this helps differentiate it from other implementations like Jython or IronPython.
Which of the following is not typically a use case for the with statement in Python?
- Creating a context manager
- Managing database connections
- Opening and closing files
- Performing arithmetic calculations inside a loop
The with statement is typically used for resource management, such as file handling or database connections. It is not meant for performing arithmetic calculations.
What's the primary benefit of using tuples as keys in dictionaries over lists?
- Tuples are faster to access.
- Tuples are immutable.
- Tuples are more memory-efficient.
- Tuples guarantee order.
The primary benefit of using tuples as keys in dictionaries is that tuples are immutable, while lists are not. This immutability ensures that the keys won't change, making tuples suitable for use as dictionary keys. Lists can't be used as keys because they can change.
In a for-loop iterating through a list, if a specific condition is met and you want to skip the remaining code in the current iteration but not exit the loop, you would use the _______ statement.
- Break
- Continue
- Pass
- Skip
The 'continue' statement is used to skip the remaining code in the current iteration of a loop and move to the next iteration without exiting the loop. So, you would use 'Continue.'
For which of the following OS is Python NOT available by default?
- Android
- Linux
- Windows
- macOS
Python is available by default on Windows, macOS, and Linux. However, it is not available by default on Android operating systems.
What keyword is used to stop the execution of the current iteration and proceed to the next in a loop?
- break
- continue
- skip
- stop
The 'continue' keyword is used to stop the execution of the current iteration in a loop and proceed to the next iteration. It allows you to skip specific iterations.
In a project where memory efficiency and speed are of utmost priority and the data doesn't need any modification once set, which data structure would be a better choice?
- Dictionary
- List
- Set
- Tuple
Tuples are an excellent choice when memory efficiency and speed are crucial because they are immutable and consume less memory compared to lists. Their immutability also ensures that data integrity is maintained, making them suitable for scenarios where data should not be modified after initialization.
When importing a module, what is the primary purpose of using the as keyword?
- To create an alias for the module
- To hide the module's functions
- To prevent the module from being imported again
- To specify the module's version
The 'as' keyword is used to create an alias for a module when importing it. This alias can make it easier to reference the module in your code, especially if the module name is long or conflicts with other names in your script.
You have a function that needs to return multiple values, which data structure is more commonly used for such a purpose?
- Dictionary
- List
- Set
- Tuple
Tuples are commonly used to return multiple values from a function because they are immutable (cannot be changed), ensuring data integrity. This makes them a safer choice than lists, which are mutable. Using a tuple also communicates that the returned values should not be modified.