Python Basics and Variables Quiz
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Questions and Answers

What are the two basic ways of running Python code?

  • Synchronous and asynchronous
  • Sequential and parallel
  • Procedural and object-oriented
  • Interpreted and compiled (correct)

What is a side effect in Python?

  • It occurs when a function modifies its environment in some way (correct)
  • It refers to an unexpected outcome of a function or method
  • It signifies an error in the output of a function
  • It indicates a change in the input parameters of a function

What is the difference between 'break' and 'continue' in Python?

  • 'Break' is for conditional statements, while 'continue' is for iteration control.
  • 'Break' is used for error handling, while 'continue' is used for flow control.
  • 'Break' exits the loop completely, while 'continue' skips the current iteration and goes to the next one. (correct)
  • 'Break' stops the program execution, while 'continue' returns to the beginning of the loop.

Which property of Python is responsible for the unexpected result: Result: 0.0 in the provided code snippet?

<p>Floating point arithmetic accuracy (D)</p> Signup and view all the answers

What is the result of the logical statement not(x or (x and y)) for x = True and y = False?

<p>False (D)</p> Signup and view all the answers

What is the result of the cast bool(7-15+8)?

<p>False (D)</p> Signup and view all the answers

What is the main difference between head-controlled loop and base-controlled loop?

<p>Head-controlled loops involve checking the condition before each iteration, while base-controlled loops check the condition after each iteration (D)</p> Signup and view all the answers

In Python, what is an immutable data structure?

<p>A data structure that cannot be modified after it is created, such as a tuple (D)</p> Signup and view all the answers

What are the three basic types of sequences in Python?

<p>Strings, lists, and tuples (A)</p> Signup and view all the answers

How can a function in Python be specified without providing an implementation?

<p>By using the keyword 'pass' to indicate an empty function body (B)</p> Signup and view all the answers

What is the main difference between iterative and recursive functions?

<p>Iterative functions use a loop to repeat a set of instructions, while recursive functions call themselves to repeat a set of instructions (B)</p> Signup and view all the answers

Which function is used to count the occurrences of an element in a list in Python?

<p>count() (D)</p> Signup and view all the answers

What does the len() function do in Python?

<p>Returns the length of a sequence (e.g., list, tuple) (B)</p> Signup and view all the answers

What does list comprehension do in Python?

<p>Provides a concise way to create lists by iterating over an existing list (D)</p> Signup and view all the answers

'x[2:4]' in Python refers to:

<p><code>x</code> containing elements from index 2 up to (but not including) index 4 (D)</p> Signup and view all the answers

'x.count(5)' in Python returns:

<p>The number of occurrences of 5 in list x (C)</p> Signup and view all the answers

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