Python for data science Week 1 Answers

Nptel week 1 answers : Python for data science
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What is the output of the following code?

 36

 121212

 123

 Error: Invalid operation, unsupported operator ‘*’ used between ‘int’ and ‘str’

Ans: 121212

1 point

What is the output of the following code?

 -1

 -2

 -1.28

 1.28

ANS: -2

1 point

Consider a following code snippet. What is a data type of y$�$?

 int

 float

 str

 Code will throw an error.

ANS: str

1 point

Which of the following variable names are INVALID in Python?

 1_variable

 variable_1

 variable1

 variable#

ANS: 1_variable

          variable#

1 point

While naming the variable, use of any special character other than underscore(_) ill throw which type of error?

 Syntax error

 Key error

 Value error

 Index error

ANS: Syntax error

1 point

Let x = “Mayur”. Which of the following commands converts the ‘x’ to float datatype?

 str(float,x)

 x.float()

 float(x)

 Cannot convert a string to float data type

ANS: Cannot convert a string to float data type

1 point

Which Python library is commonly used for data wrangling and manipulation?

 Numpy

 Pandas

 scikit

 Math

ANS: Pandas

1 point

Predict the output of the following code.

 12.0

 12

 11.667

 11

ANS: 12

1 point

Given two variables, j = 6 and g = 3.3. If both normal division and floor division operators were used to divide j by g, what would be the data type of the value obtained from the operations?

 int, int

 float, float

 float, int

 int, float

ANS: float, float

1 point

Let a = 5 (101 in binary) and b = 3 (011 in binary). What is the result of the following operation?

 3

 7

 5

 1

ANS: 1

 Python for data science 

 Python for data science 

 Python for data science 

 Python for data science 

 Python for data science 

 Python for data science