Python quiz questions

What sequence of numbers is printed?

values = [1, 2, 1, 3]
nums = set(values)
def checkit(num):
    if num in nums:
        return True
    else:
        return False
for i in  filter(checkit, values):
    print i

1. 1 2 3

2. 1 2 1 3

3. 1 2 1 3 1 2 1 3

4. 1 1 1 1 2 2 3 3

5. Syntax Error

Which numbers are printed?

for i in  range(2):
    print i
for i in range(4,6):
    print i

1. 2, 4, 6

2. 0, 1, 2, 4, 5, 6

3. 0, 1, 4, 5

4. 0, 1, 4, 5, 6, 7, 8, 9

5. 1, 2, 4, 5, 6

What gets printed?

name = "snow storm"
name[5] = 'X'
print name

1. snow storm

2. snowXstorm

3. snow Xtorm

4. ERROR, this code will not run

What gets printed?

name = "snow storm"
print "%s" % name[6:8]

1. st

2. sto

3. to

4. tor

5. Syntax Error

What gets printed?

class Account:
    def __init__(self, id):
        self.id = id
        id = 666 
acc = Account(123)
print acc.id

1. None

2. 123

3. 666

4. SyntaxError, this program will not run

What gets printed?

kvps  = {"user","bill", "password","hillary"}
print kvps['password']

1. user

2. bill

3. password

4. hillary

5. Nothing. Python syntax error

What gets printed?

class parent:
    def __init__(self, param):
        self.v1 = param
class child(parent):
    def __init__(self, param):
        self.v2 = param
obj = child(11)
print "%d %d" % (obj.v1, obj.v2)

1. None None

2. None 11

3. 11 None

4. 11 11

5. Error is generated by program

What gets printed?

print 0xA + 0xa

1. 0xA + 0xa

2. 0xA 0xa

3. 14

4. 20

5. 0x20

What gets printed?

print "\x48\x49!"

1. \x48\x49!

2. 4849

3. 4849!

4.       48      49!

5. HI!

What gets printed?

Assume Python 2

print "hello" 'world'

1. on one line the text: hello world

2. on one line the text: helloworld

3. hello on one line and world on the next line

4. syntax error, this python program will not run

What gets printed?

print r"\nwoow"

1. new line then the string: woow

2. the text exactly like this: r"\nwoow"

3. the text like exactly like this: \nwoow

4. the letter r and then newline then the text: woow

5. the letter r then the text like this: nwoow

What gets printed?

counter = 1 
def doLotsOfStuff():
    global counter
    for i in (1, 2, 3): 
        counter += 1
doLotsOfStuff()
print counter

1. 1

2. 3

3. 4

4. 7

5. None of them

Assuming python 2.6 what gets printed?

f = None
for i in range (5):
    with open("data.txt", "w") as f:
        if i > 2:
            break
print f.closed

1. True

2. False

3. None

The following code will successfully print the days and then the months

daysOfWeek = ['Monday',
              'Tuesday',
              'Wednesday',
              'Thursday',
              'Friday',
              'Saturday',
              'Sunday']
months =             ['Jan', \
                      'Feb', \
                      'Mar', \
                      'Apr', \
                      'May', \
                      'Jun', \
                      'Jul', \
                      'Aug', \
                      'Sep', \
                      'Oct', \
                      'Nov', \
                      'Dec']
print "DAYS: %s, MONTHS %s" % 
    (daysOfWeek, months)

1. true

2. false

In python 2.6 or earlier, the code will print error type 1 if accessSecureSystem raises an exception of either AccessError type or SecurityError type

try:
  accessSecureSystem()
except AccessError, SecurityError:
  print "error type 1"
continueWork()

1. true

2. false

If PYTHONPATH is set in the environment, which directories are searched for modules?

A) PYTHONPATH directory
B) current directory
C) home directory
D) installation dependent default path

1. A only

2. A and D

3. A, B, and C

4. A, B, and D

5. A, B, C, and D

What gets printed?

x = True
y = False
z = False
if not x or y:
    print 1
elif not x or not y and z:
    print 2
elif not x or y or not y and x:
    print 3
else:
    print 4

1. 1

2. 2

3. 3

4. 4

What gets printed?

x = True
y = False
z = False
if x or y and z:
    print "yes"
else:
    print "no"

1. yes

2. no

3. No compile

What gets printed?

nums = set([1,1,2,3,3,3,4])
print len(nums)

1. 1

2. 2

3. 4

4. 5

5. 7

What gets printed?

x = 4.5
y = 2
print x//y

1. 2.0

2. 2.25

3. 9.0

4. 20.25

5. 21