Coursera
Programming for Everybody (Getting Started with Python)
Week 5
Chapter 3
Graded Quiz • 30 min
1. What do we do to a Python statement that is immediately after an if statement to indicate that the statement is to be executed only when the if statement is true?
- Underline all of the conditional code
- Indent the line below the if statement
- Start the statement with a “#” character
- Begin the statement with a curly brace {
2. Which of these operators is not a comparison / logical operator?
- ==
- <
- >=
- =
- !=
3. What is true about the following code segment:
if x == 5 :
print('Is 5')
print('Is Still 5')
print('Third 5')
- Depending on the value of x, either all three of the print statements will execute or none of the statements will execute
- The string ‘Is 5’ will always print out regardless of the value for x.
- The string ‘Is 5’ will never print out regardless of the value for x.
- Only two of the three print statements will print out if the value of x is less than zero.
4. When you have multiple lines in an if block, how do you indicate the end of the if block?
- You omit the semicolon ; on the last line of the if block
- You put the colon : character on a line by itself to indicate we are done with the if block
- You use a curly brace { after the last line of the if block
- You de-indent the next line past the if block to the same level of indent as the original if statement
5. You look at the following text:
if x == 6 :
print('Is 6')
print('Is Still 6')
print('Third 6')
It looks perfect but Python is giving you an ‘Indentation Error’ on the second print statement. What is the most likely reason?
- Python thinks ‘Still’ is a mis-spelled word in the string
- In order to make humans feel inadequate, Python randomly emits ‘Indentation Errors’ on perfectly good code – after about an hour the error will just go away without any changes to your program
- Python has reached its limit on the largest Python program that can be run
- You have mixed tabs and spaces in the file
6. What is the Python reserved word that we use in two-way if tests to indicate the block of code that is to be executed if the logical test is false?
- break
- toggle
- switch
- else
7. What will the following code print out?
x = 0
if x < 2 :
print('Small')
elif x < 10 :
print('Medium')
else :
print('LARGE')
print('All done')
- LARGE
All done
- Small
- Small
Medium
LARGE
All done
All done
- Small
All done
8. For the following code,
if x < 2 :
print('Below 2')
elif x >= 2 :
print('Two or more')
else :
print('Something else')
What value of ‘x’ will cause ‘Something else’ to print out?
- x = 2.0
- x = -2.0
- This code will never print ‘Something else’ regardless of the value for ‘x’
- x = 22
9. In the following code (numbers added) – which will be the last line to execute successfully?
(1) astr = 'Hello Bob'
(2) istr = int(astr)
(3) print('First', istr)
(4) astr = '123'
(5) istr = int(astr)
(6) print('Second', istr)
- 1
- 3
- 2
- 6
10. For the following code:
astr = 'Hello Bob'
istr = 0
try:
istr = int(astr)
except:
istr = -1
What will the value be for istr after this code executes?
- It will be a random number depending on the operating system the program runs on
- -1
- It will be the ‘Not a number’ value (i.e. NaN)
- false
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