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3. is python case sensitive when dealing with identifiers a yes...

# Question: is python case sensitive when dealing with identifiers a yes...

###### Question details
1. Is Python case sensitive when dealing with identifiers?
a) yes
b) no
c) machine dependent
d) none of the mentioned
2. 2. What is the maximum possible length of an identifier?
a) 31 characters
b) 63 characters
c) 79 characters
d) none of the mentioned
3. 3. Which of the following is invalid?
a) _a = 1
b) __a = 1
c) __str__ = 1
d) none of the mentioned
4. Which of the following is an invalid variable?
a) my_string_1
b) 1st_string
c) foo
d) _
5. 5. Why are local variable names beginning with an underscore discouraged?
a) they are used to indicate a private variables of a class
b) they confuse the interpreter
c) they are used to indicate global variables
d) they slow down execution
6. 6. Which of the following is not a keyword?
a) eval
b) assert
c) nonlocal
d) pass
7. 7. All keywords in Python are in
a) lower case
b) UPPER CASE
c) Capitalized
d) None of the mentioned
8. 8. Which of the following is true for variable names in Python?
a) unlimited length
b) all private members must have leading and trailing underscores
c) underscore and ampersand are the only two special characters allowed
d) none of the mentioned
9. 9. Which of the following is an invalid statement?
a) abc = 1,000,000
b) a b c = 1000 2000 3000
c) a,b,c = 1000, 2000, 3000
d) a_b_c = 1,000,000
10. 10. Which of the following cannot be a variable?
a) __init__
b) in
c) it
d) on

1. 11. Which of these in not a core data type?
a) Lists
b) Dictionary
c) Tuples
d) Class

1. Given a function that does not return any value, What value is thrown by default when executed in shell.
a) int
b) bool
c) void
d) None

1. Following set of commands are executed in shell, what will be the output?

>>> str="hello"

>>> str[:2]

'he'

1. 14. Which of the following will run without errors ?
a) round(45.8)
b) round(6352.898,2,5)
c) round()
d) round(7463.123,2,1)
2. In python we do not specify types,it is directly interpreted by the compiler, so consider the following operation to be performed.
Command: >>>x = 13 ? 2

objective is to make sure x has a integer value, select all that apply (python 3.xx)
a) x = 13 // 2
b) x = int(13 / 2)
c) x = 13 % 2
d) All of the mentioned

1. What error is displayed when you type the following command?

Apple = mango

1. SyntaxError
b) NameError
c) ValueError
d) TypeError
1. Note: Reference : Perform Exercises provided in the following URL

https://www.w3schools.com/python/python_lists.asp

1. What data type is the object below ?
L = [1, 23, ‘hello’, 1].
a) list
b) dictionary
c) array
d) tuple
2. Write the output of the following Python code.

Python 3.7.1 (v3.7.1:260ec2c36a, Oct 20 2018, 14:05:16) [MSC v.1915 32 bit (Intel)] on win32

>>> avg = sum/2

>>> print(avg)

1. Select all options that print
hello-how-are-you
a) print(‘hello’, ‘how’, ‘are’, ‘you’)
b) print(‘hello’, ‘how’, ‘are’, ‘you’ + ‘-‘ * 4)
c) print(‘hello-‘ + ‘how-are-you’)
d) print(‘hello’ + ‘-‘ + ‘how’ + ‘-‘ + ‘are’ + ‘you’)

e) print("hello"+"-"+"how"+"-"+"are"+"-"+"you")

Section 2 will test your knowledge on basic operators

1. Which is the correct operator for power(xy)?
a) X^y
b) X**y
c) X^^y
d) None of the mentioned
2. 2. Which one of these is floor division?
a) /
b) //
c) %
d) None of the mentioned
3. What is the order of precedence in python?
i) Parentheses
ii) Exponential
iii) Multiplication
iv) Division
vi) Subtraction
a) i,ii,iii,iv,v,vi
b) ii,i,iii,iv,v,vi
c) ii,i,iv,iii,v,vi
d) i,ii,iii,iv,vi,v
4. 4. What is answer of this expression, 22 % 3 is?
a) 7
b) 1
c) 0
d) 5
5. Mathematical operations can be performed on a string. State whether true or false.
a) True
b) False
6. 6. Operators with the same precedence are evaluated in which manner?
a) Left to Right
b) Right to Left
c) Can’t say
d) None of the mentioned
7. What is the output of this expression, 3*1**3?
a) 27
b) 9
c) 3
d) 1
8. 8. Which one of the following have the same precedence?
b) Multiplication and Division
c) Both Addition and Subtraction AND Multiplication and Division
d) None of the mentioned
9. 9. The expression Int(x) implies that the variable x is converted to integer. State whether true or false.
a) True
b) False
10. 10. Which one of the following have the highest precedence in the expression?
a) Exponential
c) Multiplication
d) Parentheses

Section 3 Numeric types

1.

What is ouput of the following command?

>>> print(0.1+0.2==0.3)

2. 2. Which of the following is not a complex number?
a) k = 2 + 3j
b) k = complex(2, 3)
c) k = 2 + 3l
d) k = 2 + 3J

3. 3. What is the type of inf?
a) Boolean
b) Integer
c) Float
d) Complex

4. Which of the following is incorrect?
a) x = 0b101
b) x = 0x4f5
c) x = 19023
d) x = 03964

5. Which of the following is incorrect?
a) float(‘inf’)
b) float(‘nan’)
c) float(’56’+’78’)
d) float(’12+34′)

6. write down answer of the following command

round(0.5)-round(-0.5)

7. write down answer of the following command

>>> x=3^4

>>> print(x)

Section 4- Precedence and Associativity

>>> a = 4/(3*(2-1))

>>> b=4/3*(2-1)

Are both the expressions equal?

1. What is the output?

>>> c = 4 + 3 % 5

>>> print(c)

1. Write the output for below commands.

>>> a = 16

>>> b = 15

>>> c = a%b//a

>>> print(c)