Python Conditional Statements-Gr-11

In a Python program, a control structure:

• Directs the order of execution of the statements in the program

• Manages the input and output of control characters

• Defines program-specific data structures

• Dictates what happens before the program starts and after it terminates

Which one of the following if statements will not execute successfully:

• if (1, 2):

  print('foo')

• if (1, 2):

  
  

  print('foo')

• if (1, 2):

  print('foo')

• if (1, 2): print('foo')

What signifies the end of a statement block or suite in Python?

• end

• }

• A line that is indented less than the previous line

• A comment

What is the output of the following code snippet:

if 'bar' in {'foo': 1, 'bar': 2, 'baz': 3}:

print(1)

print(2)

if 'a' in 'qux':

print(3)

print(4)

• 4

• 1

  2

  3

  4

• It doesn’t generate any output.

• 1

  2

  4

The following if/elif/else statement will raise a KeyError exception:

1 d = {'a': 0, 'b': 1, 'c': 0}

2

3 if d['a'] > 0:

4 print('ok')

5 elif d['b'] > 0:

6 print('ok')

7 elif d['c'] > 0:

8 print('ok')

9 elif d['d'] > 0:

10 print('ok')

11 else:

12 print('not ok')

• False

• True

Which of the following are valid if/else statements in Python, assuming x and y are defined appropriately:

• if x < y: print('foo'); print('bar'); print('baz')

• if x < y: print('foo')

  elif y < x: print('bar')

  else: print('baz')

• if x < y: print('foo') else: print('bar')

• if x < y: if x > 10: print('foo')

What is value of this expression:

'a' + 'x' if '123'.isdigit() else 'y' + 'b'

• 'axb'

• 'ax'

• 'axyb'

• 'ab'

Suppose you have two variables x and y defined. Write a stub if statement to evaluate whether x is less than y. The statement should not do anything, even if the condition is true.

• if x < y:

  pass

• if x < y:

  break

• pass

• None of the Above