Last Updated on October 18, 2019 by Admin
PCAP – Programming Essentials in Python Quizzes Final Test Answers
-
The meaning of the keyword argument is determined by:
- its position within the argument list
- its value
- its connection with existing variables
- the argument’s name specified along with its value
-
Which of the following sentences is true?
str1 = ‘string’
str2 = str1[:]
- str1 and str2 are different (but equal) strings
- str2 is longer than str1
- “>str1 and str2 are different names of the same string
- str1 is longer than str2
-
An operator able to check whether two values are equal, is coded as:
- =
- ==
- ===
- is
-
The following snippet:
def f(par2,par1):
return par2 + par1
print(f(par2=1,2))
- will output 2
- will output 3
- will output 1
- is erroneous
-
What value will be assigned to the x variable?
z = 2
y = 1
x = y < z or z > y and y > z or z < y
- 0
- True
- 1
- False
-
What will be the output of the following snippet?
str = ‘abcdef’
def fun(s):
del s[2]
return s
print(fun(str))
- abcef
- the program will cause an error
- abdef
- acdef
-
What will be the output of the following piece of code?
x, y, z = 3, 2, 1
z, y, x = x, y, z
print(x,y,z)
- 2 1 3
- 1 2 3
- 1 2 2
- 3 2 1
-
What will be the output of the following snippet?
a = True
b = False
a = a or b
b = a and b
a = a or b
print(a,b)
- True False
- True True
- False False
- False True
-
What will be the output of the following snippet?
def fun(x):
return 1 if x % 2 != 0 else 2
print(fun(fun(1)))
- 2
- the code will cause a runtime error
- 1
- None
-
What will be the output of the following line?
print(len((1,)))
- 0
- the code is erroneous
- 2
- 1
-
What will be the output of the following piece of code?
d = { 1:0, 2:1, 3:2, 0:1 }
x = 0
for y in range(len(d)):
x = d[x]
print(x)
- the code will cause a runtime error
- 2
- 0
- 1
-
What will be the output of the following piece of code:
y=input()
x=input()
print(x+y)
if the user enters two lines containing 1 and 2 respectively?
- 21
- 12
- 2
- 3
-
What will be the output of the following piece of code?
print(“a”,”b”,”c”,sep=”‘”)
- a’b’c
- abc
- a b c
- the code is erroneous
-
What will be the output of the following piece of code?
v = 1 + 1 // 2 + 1 / 2 + 2
print(v)
- 4.0
- 3.5
- 3
- 4
-
What will be the output of the following code?
t = (1,)
t = t[0] + t[0]
print(t)
- (1,)
- 1
- (1, 1)
- 2
-
What will be the output of the following piece of code?
x = 16
while x > 0:
print(‘*’,end=”)
x //= 2
- *****
- ***
- *
- the code will enter an infinite loop
-
What will be the output of the following snippet?
d = { ‘one’:1, ‘three’:3, ‘two’:2 }
for k in sorted(d.values()):
print(k,end=’ ‘)
- 1 2 3
- 3 2 1
- 2 3 1
- 3 2 1
-
What will be the output of the following snippet?
print(len([i for i in range(0,-2)]))
- 0
- 2
- 3
- 1
-
Which of the following lines properly invokes the function defined as:
def fun(a,b,c=0)?- fun(0):
- fun(b=0,b=0):
- fun(1,c=2):
- fun(a=1,b=0,c=0):
-
What will be the output of the following snippet?
l = [1,2,3,4]
l = list(map(lambda x: 2*x,l))
print(l)
- 10
- the snippet will cause a runtime error
- 1 2 3 4
- 2 4 6 8
-
How many stars will the following snippet send to the console?
i = 4
while i > 0 :
i -= 2
print(“*”)
if i == 2:
break
else:
print(“*”)
- 2
- 0
- 1
- the snippet will enter an infinite loop
-
What will be the output of the following snippet?
t = (1, 2, 3, 4)
t = t[-2:-1]
t = t[-1]
print(t)
- 33
- (3)
- 3
- (3,)
-
What will be the output of the following snippet?
d = {}
d[‘2’] = [1,2]
d[‘1’] = [3,4]
for x in d.keys():
print(d[x][1],end=””)
- 24
- 13
- 42
- 31
-
What will be the output of the following snippet?
def fun(d,k,v):
d[k]=v
dc = {}
print(fun(dc,’1′,’v’))
- None
- 1
- the snippet is erroneous
- v
-
How many empty lines will the following snippet send to the console?
l = [[c for c in range(r)] for r in range(3)]
for x in l:
if len(x) < 2:
print()
- 1
- 0
- 2
- 3
-
Knowing that the function named m() resides in the module named f, and the code contains the following import statement, choose the right way to invoke the function:
from m import f
- the import statement is invalid
- mod.fun()
- mod:fun()
- fun()
-
The package directory/folder may contain a file intended to initialize the package. Its name is:
- __init__.py
- init.py
- __init.py__
- __init__.
-
The folder created by Python used to store pyc files is named:
- __pycfiles__
- __pyc__
- __pycache__
- __cache__
-
What will be the output of the following code, located in the file module.py?
print(__name__)
- main
- __module.py__
- module.py
- __main__
-
If you want to tell your module’s users that a particular variable should not be accessed directly, you may:
- start its name with a capital letter
- use its number instead of its name
- start its name with _ or __
- build its name with lowercase letters only
-
If there is a finally: branch inside the try: block, we can say that:
- it won’t be executed if no exception is raised
- it will always be executed
- branches is executed
- it will be executed when there is no else: branch
-
What will be the output of the following snippet?
try:
raise Exception
except BaseException:
print(“a”,end=”)
else:
print(“b”,end=”)
finally:
print(“c”)
- a
- ab
- bc
- ac
-
What will be the output of the following snippet?
class A:
def __init__(self,name):
self.name = name
a = A(“class”)
print(a)
- a number
- a string ending with a long hexadecimal number
- class
- name
-
What will be the output of the following snippet?
try:
raise Exception
except:
print(“c”)
except BaseException:
print(“a”)
except Exception:
print(“b”)
- it will an cause error
- b
- c
- a
-
What will be the output of the following snippet?
class X:
pass
class Y(X):
pass
class Z(Y):
pass
x = X()
z = Z()
print(isinstance(x,Z),isinstance(z,X))
- False False
- True True
- True False
- False True
-
The following code prints:
x = “\”
print(len(x))
- 1
- the code will cause an error
- 2
- 3
-
The following code prints:
x = “””
“””
print(len(x))
- 2
- 1
- the code will cause an error
- 3
-
If the class constructor is declared as below, which one of the assignments is valid?
class Class:
def __init__(self):
pass
- object = Class(None)
- object = Class(1)
- object = Class(1,2)
- object = Class()
-
What will be the output of the following code?
class A:
A = 1
def __init__(self,v = 2):
self.v = v + A.A
A.A += 1
def set(self,v):
self.v += v
A.A += 1
return
a = A()
a.set(2)
print(a.v)
- 7
- 5
- 1
- 3
-
What will be the output of the following code?
class A:
A = 1
def __init__(self):
self.a = 0
print(hasattr(A,’A’))
- True
- 0
- 1
- False
-
What will be the result of executing the following code?
class A:
pass
class B:
pass
class C(A,B):
pass
print(issubclass(C,A) and issubclass(C,B))
- it will print True
- it will raise an exception
- it will print an empty line
- it will print False
-
The sys.stdout stream is normally associated with:
- the screen
- a null device
- the keyboard
- the printer
-
What will be the effect of running the following code?
class A:
def __init__(self,v):
self._a = v + 1
a = A(0)
print(a._a)
- it will print 0
- it will print 1
- it will print 2
- it will raise an AttributeError exception
-
What will be the result of executing the following code?
class A:
def __init__(self):
pass
def f(self):
return 1
def g():
return self.f()
a = A()
print(a.g())
- it will print 0
- it will print True
- it will print 1
- it will raise an exception
-
What will be the result of executing the following code?
class A:
def a(self):
print(‘a’)
class B:
def a(self):
print(‘b’)
class C(A,B):
def c(self):
self.a()
o = C()
o.c()
- it will print b
- it will print a
- it will raise an exception
- it will print c
-
The Exception class contains a property named args, and it is a:
- string
- tuple
- list
- dictionary
-
What will be the result of executing the following code?
def I(n):
s = ”
for i in range(n):
s += ‘*’
yield s
for x in I(3):
print(x,end=”)
- it will print ***
- it will print ****
- it will print *
- it will print ******
-
What will be the result of executing the following code?
def a(x):
def b():
return x + x
return b
x = a(‘x’)
y = a(”)
print(x() + y())
- it will print xxxxxx
- it will print x
- it will print xx
- it will print xxxx
-
If s is a stream opened in read mode, the following line
q = s.readlines()
will assign q as a:
- string
- dictionary
- list
- tuple
-
If you want to write a byte array’s content to a stream, you’d use:
- the write() method
- writebytearray() method
- the writefrom() method
- writeto() method