programming midterm 2 study guide

how do you reverse user input?

' '.join(reversed(word))

How do you create an empty tuple in Python

() and tuple()

Fill in the Blank: To concatenate two strings a and b, you can use the ___operator.

+

Fill in the Blank: To count the number of occurrences of an element in a tuple, use the method ___().

count

How do you access the value associated with the key 'a' in the dictionary d = {'a': 1, 'b': 2}?

d.get('a') and d['a']

What will be the output of the following code? s = "Hello World" print(s[1:5])

ello

are tuples mutable or immutable?

immutable

Which of the following methods is used to find the index of a substring in a string?

index() and find()

Fill in the Blank: To add a new key-value pair to a dictionary, use the syntax dictionary[___] = value.

key

The method to convert a string to all lowercase in Python is string.___()

lower

Does a set guarantee the order of items as they are added? Specifically, when using a loop to print the items, will they be returned in the same order in which they were added?

no

can sets contain duplicate elements?

no

how to make all spaces in a sentence into an _

output = text.replace(" ", "_")

Which of the following operations will add an element to the set s?

s.add( )

how to count vowels from user input?

sum(1 for letter in word if letter in vowels)

Which is a valid way to access the second element of a tuple t?

t[1]

.isalpha() method is used to check weather all the characters in a given strings are alphabets

true

.isdigit() method is used to check weather all the characters in a given strings are numerical digits in range 0 to 9

true

The keys in a dictionary can be accessed using .values() method.

true

The keys in the dictionary are unique

true

The string method strip() removes all whitespace from both ends of a string.

true

endswith( suffix ) returns whether (True or False) the string ends with the given string suffix

true

he keys in a dictionary can be accessed using .keys() method.

true

join( sequence ) joins the sequence of values into a single string value with the "called on" string as the separator

true

startswith( prefix ) return whether (True or False) the string starts with the given prefix string

true

What is the output of the following code snippet? A = {1, 2, 3} B = {3, 4, 5} print( A.union(B))

{1, 2, 3, 4, 5}

what will be the output of the following code? s = {1, 2, 3} s.add(2) print(s)

{1, 2, 3}