SyVe Python Mock Quiz

1.

1 point

What is the output of the following?

print([i+j for i in "abc" for j in "def"])

[['da', 'db', 'dc'], ['ea', 'eb', 'ec'], ['fa', 'fb', 'fc']]

[['ad', 'bd', 'cd'], ['ae', 'be', 'ce'], ['af', 'bf', 'cf']]

['ad', 'ae', 'af', 'bd', 'be', 'bf', 'cd', 'ce', 'cf']

['da', 'ea', 'fa', 'db', 'eb', 'fb', 'dc', 'ec', 'fc']

2.

1 point

What arithmetic operators cannot be used with strings ?

*

-

**

+

3.

1 point

What is the output of the following code?

def foo(k):
<-> k[0] = 1
q = [0]
foo(q)
print(q)
print(q)

[0,1]

[1,0]

[1]

[0]

4.

1 point

What is the output when following code is executed ?

>>>print r"\nhello"

a new line and hello

the letter r and then hello

error

\nhello

5.

1 point

What are the two types of functions?

Custom function

User-Defined function

Built-in function

System function

6.

1 point

What is the output of the following?

i = 1
while True:
<-> if i%3 == 0:
<-><-> break
<-> print(i)
<-> i + = 1

1 2

error

1 2 3

none of the mentioned

7.

1 point

What is the output of the following?

print("Hello {0!r} and {0!s}".format('foo', 'bin'))

Hello foo and ‘bin’

Hello foo and bin

Hello ‘foo’ and bin

error

8.

1 point

What is the output of “hello”+1+2+3 ?

hello123

hello6

Error

hello

9.

1 point

Which operator is overloaded by __invert__()?

~

!

-

^

10.

1 point

What is the output of the following?

True = False
while True:
<-> print(True)
<-> break

True

Syntax Error

False

None of the mentioned

11.

1 point

What is the output of below program?

def writer():

<-> title = 'Sir'

<-> name = (lambda x:title + ' ' + x)

<-> return name

who = writer()

who('Arthur')

None of the mentioned

Arthur Sir

Sir Arthur

Arthur

12.

1 point

What is the output of the following?

for i in ''.join(reversed(list('abcd'))):
<-> print (i)

error

none of the mentioned

a b c d

d c b a

13.

1 point

What is the output of the following?

sentence = 'we are humans'
matched = re.match(r'(.*) (.*?) (.*)', sentence)
print(matched.group(2))

‘humans’

‘we are humans’

‘are’

‘we’

14.

1 point

Is the following code valid?

try:
<-> # Do something
except:
<-> # Do something
finally:
<-> # Do something

no, finally must come before except

no, finally cannot be used with except

no, there is no such thing as finally

yes

15.

1 point

Which of the following is an invalid variable?

_

1st_string

my_string_1

foo

16.

1 point

Suppose d = {“john”:40, “peter”:45}, to delete the entry for “john” what command do we use

del d["john"]

d.delete(“john”:40)

del d(“john”:40)

d.delete(“john”)

17.

1 point

What dataype is the object below ?
L = [1, 23, 'hello', 1]

dictionary

List

tuple

array

18.

1 point

Python supports the creation of anonymous functions at runtime, using a construct called __________?

None of the mentioned

Lambda

anonymous

pi

19.

1 point

What is the value stored in sys.argv[0]?

you cannot access it

null

the program’s name

the first argument

20.

1 point

Which of the following is not a valid attribute of a file object (fp)?

fp.name

fp.mode

fp.closed

fp.size

21.

1 point

Which of the following statement prints hello\example\test.txt ?

print(“hello\”example\”test.txt”)

print(“hello”\example”\test.txt”)

print(“hello\example\test.txt”)

print(“hello\\example\\test.txt”)

22.

1 point

Which of the following functions can be used to read data from a file using a file descriptor?

os.read()

os.quick_read()

os.scan()

os.reader()

23.

1 point

What is the output of the following?

def foo(i, x=[]):
<-> x.append(x.append(i))
<-> return x
for i in range(3):
<-> y = foo(i)
print(y)

[[0], None, [1], None, [2], None]

[[0], [[0], 1], [[0], [[0], 1], 2]]

[[[0]], [[[0]], [1]], [[[0]], [[[0]], [1]], [2]]]

24.

1 point

What does ~~~~~~5 evaluate to?

+11

+5

-11

-5

25.

1 point

Following set of commands are executed in shell, what will be the output?

>>>str="hello"

>>>str[:2]

>>>str

he

lo

olleh

hello

26.

1 point

What is the output of the following?

sentence = 'we are humans'
matched = re.match(r'(.*) (.*?) (.*)', sentence)
print(matched.groups())

(we, are, humans)

(‘we’, ‘are’, ‘humans’)

(‘we’, ‘humans’)

‘we are humans’

27.

1 point

What is the output when following code is executed ?

>>>list("a#b#c#d".split('#'))

['a#b#c#d']

['a', 'b', 'c', 'd']

['abcd']

['a b c d']

28.

1 point

How many elements are in m?

m = [[x, y] for x in range(0, 4) for y in range(0, 4)]

16

8

12

32

29.

1 point

What is the output of the following?

for i in range(2.0):
<-> print(i)

none of the mentioned

0.0 1.0

error

0 1

30.

1 point

What is the order of precedence in python?
i) Parentheses
ii) Exponential
iii) Division
iv) Multiplication
v) Addition
vi) Subtraction

ii,i,iii,iv,v,vi

ii,i,iv,iii,v,vi

i,ii,iii,iv,v,vi

i,ii,iii,iv,vi,v