Exploring Python Data Types

Which of these is not a core data type?

• List

• Tuple

• Set

• Class

How do you declare a float variable in Python?

• my_float : float = 3.14

• float my_float = 3.14

• my_float = 3.14

• my_float = 3,14

What is the output of the expression 3.14 + 2.86?

• 7.14

• 6.28

• 6.00

• 5.00

How do you concatenate two strings in Python?

• Use the '&' operator to combine strings.

• Use the '*' operator to concatenate strings.

• Use the 'concat()' method to join strings.

• Use the '+' operator to concatenate strings.

What is the difference between a list and a tuple in Python?

• Tuples are mutable; lists are immutable.

• Lists can contain only numbers; tuples can contain any data type.

• Lists are mutable; tuples are immutable.

• Lists are faster than tuples in all cases.

How do you access the first element of a list in Python?

• my_list.first()

• my_list[1]

• get_first(my_list)

• my_list[0]

What method would you use to find the length of a string?

• Use the 'size' method.

• Use the 'length' method or function.

• Count the characters manually.

• Use the 'getLength' function.

What data type is the object below ? li = [1, 23, ‘hello’, 1]

• List

• 
  Dictionary

• Tuple

• 
  
  Array

What is the output of the expression len([1, 2, 3])?

• 3

• 3.5

• 2

• 4

Which of the following function convert a string to a float in python?

• int(x [,base])

• long(x [,base] )

• 
  float(x)

• 
  str(x)