Python Programming Basics 1

Is Python case sensitive when dealing with identifiers?

• Yes

• No

• Machine Dependent

• None of the mentioned

What is the maximum possible length of an identifier?

• 31 characters

• 63 characters

• 79 characters

• None of the mentioned

Which of the following is an invalid variable?

• my_string_1

• 1st_string

• foo

• _

Which of the following is not a keyword?

• assert

• eval

• nonlocal

• pass

Which of the following cannot be a variable?

• __init__

• in

• it

• on

Answer explanation

'in' is a keyword.

Consider the code:

a=21; b=6

print(a/b); print(a//b); print(a%b) 

What is the result?

• 3.0

  3

  3

• 3

  3

  3

• 3.5

  3

  3

• 3.5

  3.5

  3

Answer explanation

division operator in python always meant for floating point arithmetic. Hence a/b returns 3.5 But floor division(//) operator can perform both integral and floating point arithmetic. If the arguments are int type then the result is int type and if the arguments are float type then the result is float type. Hence a//b returns 3. a%b returns the remainder which is 3.

Consider the code and What is the result?

s='AB CD'

list=list(s)

list.append('EF')

print(list)

• ('A','B',' ','C','D','EF')

• ['A','B','C','D','E','F']

• {'A','B',' ','C','D','EF'}

• ['A','B',' ','C','D','EF']

Answer explanation

List elements will be printed within square brackets.

Whenever we are converting string to list, each character will become element of List including space also.

Which is the correct operator for power(xy)?

• x^y

• x**y

• x^^y

• None of the above

Which one of these is floor division?

• /

• //

• \

• \\

What is the order of precedence in python?

i) Parentheses, ii) Exponential

iii) Multiplication, iv) Division

v) Addition, vi) Subtraction

• i,ii,iii,iv,vi,v

• ii,i,iv,iii,v,vi

• ii,i,iii,iv,v,vi

• i,ii,iii,iv,v,vi