Revision Python Data Types
1. List all data types and
write one example of each type.
2. What is the difference between mutable and
immutable data type? Give examples of each.
3. Which of the following
is true?
a) All keywords in python
are in lower case
b) All variable names are
case sensitive
4. Identify valid variable names from the
following:
My_string_1
, 1ststring , Id , id , True , class
5. Which of the following
is not a keyword?
eval,
string , str , id , type
6. Which of the following is a valid assignment
statement?
a) a ; b ; c = 10 20 30 b) a_b_c = 10 , 20 , 30
c) a, b, c = 10 , 20 , 30 d) a b c = 10 20 30
7. If x=2 , What will be
the output of the following:
a) print(“x”) b)
print( ‘x’ ) c)
print(x)
d) print (‘x’ + 2 ) d)
print(‘x + 2’)
e)
print(‘x’ * 2) f)
print( x * 2 )
8. Pick the correct
assignment statement from the following and Justify your answer:
|
a) school
= ‘Hans
raj’
|
b) school
= “Hans
raj”
|
c)
school='''Hans
raj'''
|
9. Write the output
produced by the following statements:
a)
print(‘You\tare\tyour\nchoices’)
b) print(‘\‘How old are you ?\’, he asked’)
c) print('"Don\'t\ttalk in the class"')
10. Given a=15,b=9,c=1, Evaluate
the following:
a) a % 4 +
( 3 + b // 4 ) – 2 ** c * 3
b) a < c and b < c or not ( a > c )
c) a != b
or a > b and c == 1
11. What is a comment?
Identify the comments in the following code snippet:
# function to calculate area of a rectangle
def
area(l,b): # function definition
return
l*b
print('Area='
, area(2,3) ) # function call
12. Given quote = “focus and win 100%”. Write the
output produced by the following:
a) quote[ -1] b)
quote[1] c) quote[ len(quote) –
4 : ]
d) quote[ : len(quote) – 4 ] e) quote [ 6 : -5 ]
f) quote.upper() g)
quote.title()
h) quote.find(‘us’) i)
quote.find(‘n’,10)
13. Given one = [ 11 ,22
,33 ] and two = [ 33 , 55 ]. Write the output produced
by the following:
a) print( one[len(one) - 2 ] ) b) print( sum(two) // len(two) )
c) print( max(one) // 10 ) d)
print( max(one) – min(one) )
e) print(one.count(1)) f)
print(one.count(11))
g) two[1]=44 h)
one.extend(two) i)
tuple(one)
print(two) print(one)
14. Given odd=(1,3,[5, 7]
, 9). Write the output produced by the following:
a) odd[1:] b)
del odd[1] c) odd[2][0] = 9 d) del odd[2][0]
print odd
15. Given even=(2,4,6) .
Write the output produced by the following:
a) even[0] = 100 b)
a = list(even)
even[0] = 100
print(even)
16. Which of the
following statement are correct for a dictionary?
a) Record = { ‘name’ : [‘hansraj’] , ‘address’ : ‘punjabi
bagh’ }
b) Record =
{ ‘name’ : [‘hansraj’] , ‘address’ : [‘punjabi bagh’] }
c) Record =
{ [‘name’] : ‘hansraj’ , [‘address’] : ‘punjabi bagh’ }
d) Record =
{ ‘name’ : [‘hansraj’] , ‘address’ : ‘punjabi bagh’ }
e) Record =
{ ('school') : ['hansraj'] , ('address') : ['punjabi bagh'] }
f) Record =
{ ('school') : ('hansraj') , ('address') : ('punjabi bagh') }
g) Record =
{ 'school' : 'hansraj' , 'address' : 'punjabi bagh' }
17. Given details = { ‘exam’ : ‘Term1’ , ‘start’ : 9 , ‘end’ : 12
}.
What will be the output of the following:
a) print ( details.get(‘exam’) ) b) details[‘exam’]
c) del details[‘end’] d)
details[‘exam’] = ‘Half Yearly’
print(details)
No comments:
Post a Comment