Python Institute PCAP-31-03 Exam Questions Free Practice Test

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Viewing questions 11-20 out of questions

Questions # 11:

What is the expected behavior of the following code?

x = 8 ** (1/3)

y = 2. if x < 2.3 else 3.

print(y)

Options:

it outputs 2.0

it outputs 2. 5

the code is erroneus and it will not execute

it outputs 3.0

Expert Solution

Questions # 12:

Which of the following statement are true? (Select two answers)

Options:

closing an open file is performed by the closefile ( ) function

the second open ( ) argument describes the open mode and defaults to ‘w’

if open ( ) ‘s second argument is ‘r’ the file must exist or open will fail

if open ( )’s second argument is ‘w’ and the invocation succeeds, the previous file’s content is lost

Expert Solution

Questions # 13:

Which of the following statements are true? {Select two answers)

Options:

an escape sequence can be recognized by the / sign put in front of it

II in ASCII stands for Internal Information

ASCII is a subset of UNICODE

a code point is a number assigned to a given character

Expert Solution

Questions # 14:

You are going to read 16 bytes from a binary file into a bytearray called data. Which lines would you use? (Select two answers)

Options:

data = bytearray (16) bf.readinto (data)

data = binfile.read (bytearray (16))

bf. readinto (data = bytearray (16))

data = bytearray (binfile.read (16))

Expert Solution

Questions # 15:

A two-parameter lambda function raising its first parameter to the power of the second parameter should be declared as:

Options:

lambda (x, y) = x ** y

lambda (x, y): x ** y

def lambda (x, y): return x ** y

lambda x, y: x ** y

Expert Solution

Questions # 16:

An operator able to perform bitwise shifts is coded as (select two answers)

Options:

- -

Expert Solution

Questions # 17:

Assuming that the code below has been executed successfully, which of the following expressions will always evaluate to True? (Select two answers)

import random

v1 = random. random()

v2 = random. random()

Options:

len(random.sample([1,2,3],2)) > 2

v1 == v2

random.choice([1,2,3]) >=1

v1 >= 1

Expert Solution

Questions # 18:

Assuming that the code below has been placed inside a file named code.py and executed successfully, which of the following expressions evaluate to True? (Select two answers)

Question # 18

Options:

str(Object) == 'Object'

_name == _main_'

ClassA. _module_ == 'ClassA'

len(ClassB.__bases__) == 1

Expert Solution

Questions # 19:

Assuming that the following code has been executed successfully, select the expressions which evaluate to True (Select two answers.)

Question # 19

Options:

a is not None

a ! =b

b () ==4

a () == 4

Expert Solution

Questions # 20:

What is true about Python packages? (Select two answers)

Options:

the sys.path variable is a list of strings

_pycache_is a folder that stores semi-completed Python modules

a package contents can be stored and distributed as an mp3 file

a code designed to initialize a package's state should be placed inside a file named init.py

Expert Solution

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