Question: Which TWO of the following statements about for loops in Python are TRUE? They may have an associated else block They can only be used with sequences containing the same data type They can iterate over the elements in tuples, lists, and dictionaries They can iterate over the digits of an int type
Answer (1)
In Python, 'for' loops are a way to iterate over a sequence, such as a list, tuple, or dictionary. Let's examine each statement to determine which two are true:
They may have an associated else block.
This is true. In Python, a 'for' loop can have an associated 'else' block that executes after the loop finishes iterating over the sequence, but only if the loop is not terminated by a 'break' statement. This 'else' block is often used when you want to run some code after the loop completes all iterations.
They can only be used with sequences containing the same data type.
This is false. Python's 'for' loops can iterate over any sequence, regardless of the type of elements it contains. This includes lists, tuples, and dictionaries that may contain mixed data types.
They can iterate over the elements in tuples, lists, and dictionaries.
This is true. 'For' loops are designed to iterate over any iterable in Python. This includes tuples, lists, and dictionaries. When iterating over dictionaries, the loop goes over the keys by default, but it can be adjusted to iterate over values or key-value pairs.
They can iterate over the digits of an int type.
This is false. Integers are not iterable in Python. To iterate over the digits of an integer, it needs to be converted to a string or another iterable sequence first.
The correct answers are:
They may have an associated else block.
They can iterate over the elements in tuples, lists, and dictionaries.
