What will be the output of the following Python code?
def a(n):
if n == 0:
return 0
elif n == 1:
return 1
else:
return a(n-1)+a(n-2)
for i in range(0,4):
print(a(i),end=" ")1.0 1 2 3
2.An exception is thrown
3.0 1 1 2 3
4. 0 1 1 2
What will be the output of the following Python code? f=lambda x:bool(x%2) print(f(20), f(21))
1.False True
2. False False
3. True True
4.True False
What will be the output of the following Python code? l=[-2, 4] m=map(lambda x:x*2, l) print(m)
1. [-4, 16]
2.Address of m
3.Error
4.-4 16
What will be the output of the following Python code?
l=[1, -2, -3, 4, 5]
def f1(x):
return x<2
m1=filter(f1, l)
print(list(m1))1. [1, 4, 5 ]
2.Error
3. [-2, -3]
4.[1, -2, -3]
What will be the output of the following Python code? l=[1, 2, 3, 4, 5] m=map(lambda x:2**x, l) print(list(m))
1.[1, 4, 9, 16, 25 ]
2. [2, 4, 8, 16, 32 ]
3.[1, 0, 1, 0, 1]
4.error
Which of these is not true about recursion?
1. Making the code look clean
2.A complex task can be broken into sub-problems
3.Recursive calls take up less memory
4.Sequence generation is easier than a nested iteration
Which type of copy is shown in the following python code? l1=[[10, 20], [30, 40], [50, 60]] ls=list(l1) ls [[10, 20], [30, 40], [50, 60]]
1.Shallow copy
2.Deep copy
3.memberwise
4.all of the mentioned
Fill in the line of the following Python code for calculating the factorial of a number.
def fact(num):
if num == 0:
return 1
else:
return _________1. num*fact(num-1)
2. (num-1)*(num-2)
3.num*(num-1)
4.fact(num)*fact(num-1)
In _______ copy, the base address of the objects are copied. In ________ copy, the base address of the objects are not copied.
1.deep. shallow
2.memberwise, shallow
3. shallow, deep
4.deep, memberwise
In _________copy, the modification done on one list affects the other list. In ________ copy, the modification done on one list does not affect the other list.
1. shallow, deep
2. memberwise, shallow
3.deep, shallow
4. deep, memberwise
Observe the following Python code?
def a(n):
if n == 0:
return 0
else:
return n*a(n - 1)
def b(n, tot):
if n == 0:
return tot
else:
return b(n-2, tot-2)1.Both a() and b() aren’t tail recursive
2.Both a() and b() are tail recursive
3.b() is tail recursive but a() isn’t
4.b() is tail recursive but a() isn’t
Read the following Python code carefully and point out the global variables?
y, z = 1, 2
def f():
global x
x = y+z1. x
2. y and z
3. x, y and z
4.Neither x, nor y, nor z
What happens if a local variable exists with the same name as the global variable you want to access?
1. Error
2. The local variable is shadowed
3.Undefined behavior
4.The global variable is shadowed
What happens if the base condition isn’t defined in recursive programs?
1. Program gets into an infinite loop
2.Program runs once
3.Program runs n number of times where n is the argument given to the function
4.An exception is thrown
What is tail recursion?
1.A recursive function that has two base cases
2.A function where the recursive functions leads to an infinite loop
3. A recursive function where the function doesn’t return anything and just prints the values
4. A function where the recursive call is the last thing executed by the function
What is the base case in the Merge Sort algorithm when it is solved recursively?
1.n=0
2.n=1
3.A list of length one
4.An empty list
What will be the output of the following Python code and state the type of copy that is depicted? l1=[2, 4, 6, 8] l2=[1, 2, 3] l1=l2 l2
1. [2, 4, 6, 8], shallow copy
2.[2, 4, 6, 8], deep copy
3. [1, 2, 3], shallow copy
4.[1, 2, 3], deep copy
What will be the output of the following Python code? a = [1, 2, 3, 4, 5] b = lambda x: (b (x[1:]) + x[:1] if x else []) print(b (a))
1. 1 2 3 4 5
2.[5,4,3,2,1]
3. []
4.Error, lambda functions can’t be called recursively
What will be the output of the following Python code? a=10 globals()['a']=25 print(a)
1.10
2.25
3. Junk value
4.error
What will be the output of the following Python code?
def check(n):
if n < 2:
return n % 2 == 0
return check(n - 2)
print(check(11))1. False
2. True
3.1
4.An exception is thrown
What will be the output of the following Python code?
def f():
global a
print(a)
a = "hello"
print(a)
a = "world"
f()
print(a)1. hello hello world
2. world hello hello
3. hello world world
4. world hello world
What will be the output of the following Python code? def f(): x=4 x=1 f() x
1.Error
2.4
3.Junk value
4. 1
What will be the output of the following Python code?
def f(p, q, r):
global s
p = 10
q = 20
r = 30
s = 40
print(p,q,r,s)
p,q,r,s = 1,2,3,4
f(5,10,15)1.1 2 3 4
2.5 10 15 4
3.10 20 30 40
4. 5 10 15 40
What will be the output of the following Python code?
def f(x):
print("outer")
def f1(a):
print("inner")
print(a,x)
f(3)
f1(1)1.outer error
2.inner error
3.outer inner
4. error
What will be the output of the following Python code?
def f1():
global x
x+=1
print(x)
x=12
print("x")1. Error
2.13
3.13 x
4. x
What will be the output of the following Python code?
def f1():
x=100
print(x)
x=+1
f1()1. Error
2.100
3.101
4. 99
What will be the output of the following Python code?
def f1():
x=15
print(x)
x=12
f1()1. Error
2.12
3. 15
4.1512
What will be the output of the following Python code?
def f1(a,b=[]):
b.append(a)
return b
print(f1(2,[3,4]))1.[3,2,4]
2. [2,3,4]
3.Error
4.[3,4,2]
What will be the output of the following Python code?
def f1(x):
global x
x+=1
print(x)
f1(15)
print("hello")1.error
2.hello
3.16
4.16 hello
What will be the output of the following Python code?
def fun(n):
if (n > 100):
return n - 5
return fun(fun(n+11));
print(fun(45))1. 50
2. 100
3. 74
4.Infinite loop
What will be the output of the following Python code?
def san(x):
print(x+1)
x=-2
x=4
san(12)1. 13
2. 10
3.2
4.5
What will be the output of the following Python code?
def test(i,j):
if(i==0):
return j
else:
return test(i-1,i+j)
print(test(4,7))1.13
2. 7
3.Infinite loop
4.17
What will be the output of the following Python code?
e="butter"
def f(a): print(a)+e
f("bitter")1.error
2. butter error
3. bitter error
4.bitterbutter
What will be the output of the following Python code? import functools l=[1,2,3,4] print(functools.reduce(lambda x,y:x*y,l))
1. Error
2.10
3.24
4.No output
What will be the output of the following Python code? l1=[1, 2, 3, (4)] l2=l1.copy() l2 l1
1.[1, 2, 3, (4)] [1, 2, 3, 4]
2.[1, 2, 3, 4] [1, 2, 3, (4)]
3.[1, 2, 3, 4] [1, 2, 3, 4]
4.[1, 2, 3, (4)] [1, 2, 3, (4)]
What will be the output of the following Python code? l1=[1, 2, 3, [4]] l2=list(l1) id(l1)==id(l2)
1. True
2.False
3. Error
4.Address of l1
What will be the output of the following Python code? l1=[10, 20, 30, [40]] l2=copy.deepcopy(l1) l1[3][0]=90 l1 l2
1.[10, 20, 30, [40]] [10, 20, 30, 90]
2.Error
3.[10, 20, 30 [90]] [10, 20, 30, [40]]
4.[10, 20, 30, [40]] [10, 20, 30, [90]]
What will be the output of the following Python code? l1=[10, 20, 30] l2=l1 id(l1)==id(l2) l2=l1.copy() id(l1)==id(l2)
1.False, False
2. False, True
3.True, True
4.True, False
What will be the output of the following Python code?
l=[1, -2, -3, 4, 5]
def f1(x):
return x<-1
m1=map(f1, l)
print(list(m1))1.[False, False, False, False, False]
2.[False, True, True, False, False]
3. [True, False, False, True, True]
4. [True, True, True, True, True]
What will be the output of the following Python code?
l=[]
def convert(b):
if(b==0):
return l
dig=b%2
l.append(dig)
convert(b//2)
convert(6)
l.reverse()
for i in l:
print(i,end="")1.011
2.110
3.3
4.Infinite loop
What will be the output of the following Python code?
odd=lambda x: bool(x%2)
numbers=[n for n in range(10)]
print(numbers)
n=list()
for i in numbers:
if odd(i):
continue
else:
break1. [0, 2, 4, 6, 8, 10]
2. [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
3.[1, 3, 5, 7, 9]
4. error
What will be the output of the following Python code?
x = 5
def f1():
global x
x = 4
def f2(a,b):
global x
return a+b+x
f1()
total = f2(1,2)
print(total)1. Error
2.7
3.8
4.15
What will be the output of the following Python code? x=1 def cg(): global x x=x+1 cg() x
1.2
2.1
3. 0
4. error
What will be the output of the following Python code?
x=100
def f1():
global x
x=90
def f2():
global x
x=80
print(x)1.100
2. 90
3. 80
4. error
What will be the output of the following Python code?
x=12
def f1(a,b=x):
print(a,b)
x=15
f1(4)1. Error
2.12 4
3.4 12
4.4 15
Which is the most appropriate definition for recursion?
1. A function that calls itself
2.A function execution instance that calls another execution instance of the same function
3. A class method that calls another class method
4.An in-built method that is automatically called
Which of the following data structures is returned by the functions globals() and locals()?
1. list
2. set
3.dictionary
4.tuple
Which of the following statements is false about recursion?
1.Every recursive function must have a base case
2.Infinite recursion can occur if the base case isn’t properly mentioned
3.A recursive function makes the code easier to understand
4.Every recursive function must have a return value
Which of these is false about recursion?
1.Recursive function can be replaced by a non-recursive function
2.Recursive functions usually take more memory space than non-recursive function
3.Recursive functions run faster than non-recursive function
4.Recursion makes programs easier to understand
Which of these is not true about recursion?
1. It’s easier to code some real-world problems using recursion than non-recursive equivalent
2. Recursive functions are easy to debug
3.Recursive calls take up a lot of memory
4.Programs using recursion take longer time than their non-recursive equivalent