Deck 8: More About Strings

Question 1

What will be assigned to the string variable even after the execution of the following code?
Special = '0123456789'
Even = special[0:10:2]

A) '13579'
B) '2468'
C) '02468'
D) Invalid code

Answer 1

C

Question 2

What will be assigned to s_string after the execution of the following code?
Special = '1357 Country Ln.'
S_string = special[ :4]

A) '7'
B) '1357'
C) '1357 '
D) Invalid code

Answer 2

B

Question 3

What is the value of the variable string after the execution of the following code?
String = 'Hello'
String += ' world'

A) 'Hello'
B) ' world'
C) 'Hello world'
D) Invalid code

Answer 3

C

Question 4

What will be assigned to s_string after the execution of the following code?
Special = '1357 Country Ln.'
S_string = special[-3: ]

A) '531'
B) 'Ln.'
C) ' Ln.'
D) '7531'

Question 5

What is the first negative index in a string?

A) 0
B) -1
C) -0
D) Size of the string minus one

Question 6

Invalid indexes do not cause slicing expressions to raise an exception.

Question 7

Which list will be referenced by the variable list_strip after the execution of the following code?
List_string = '03/07/2008'
List_strip = list_string.split('/')

A) ['3', '7', '2008']
B) ['03', '07', '2008']
C) ['3', '/', '7', '/', '2008']
D) ['03', '/', '07', '/', '2008']

Question 8

What is the return value of the string method lstrip()?

A) The string with all whitespace removed
B) The string with all leading spaces removed
C) The string with all leading tabs removed
D) The string with all leading whitespaces removed

Question 9

What will be assigned to the string variable pattern after the execution of the following code?
I = 3
Pattern = 'z' * (5*i)

A) 'zzzzzzzzzzzzzzz'
B) 'zzzzz'
C) Error: '*' operator used incorrectly
D) The right side of the '*' must be an integer.

Question 10

What are the valid indexes for the string 'New York'?

A) 0 through 7
B) 0 through 8
C) -1 through -8
D) -1 through 6

Question 11

Which method would you use to determine whether a substring is the suffix of a string?

A) endswith(substring)
B) find(substring)
C) replace(string, substring)
D) startswith(substring)

Question 12

Which of the following string methods can be used to determine if a string contains only '\n' characters?

A) ischar()
B) isalpha()
C) istab()
D) isspace()

Question 13

If the start index is _____ the end index, the slicing expression will return an empty string.

A) equal to
B) less than
C) greater than
D) not equal to

Question 14

In slicing, if the end index specifies a position beyond the end of the string, Python will use the length of the string instead.

Question 15

What is the value of the variable string after the execution of the following code?
String = 'abcd'
String.upper()

A) 'abcd'
B) 'Abcd'
C) 'ABCD'
D) Invalid code

Question 16

Indexing of a string starts at 1, so the index of the first character is 1, the index of the second character is 2, and so forth.

Question 17

What will be assigned to s_string after the execution of the following code?
Special = '1357 Country Ln.'
S_string = special[4: ]

A) '1357'
B) 'Country Ln.'
C) ' Country Ln.'
D) Invalid code

Question 18

Which method would you use to determine whether a substring is present in a string?

A) endswith(substring)
B) find(substring)
C) replace(string, substring)
D) startswith(substring)

Question 19

Indexing works with both strings and lists.

Question 20

The index - 1 identifies the last character in a string.

Question 21

Each character in a string has a(n) _______________ which specifies its position in the string.

Question 22

When the operand on the left side of the * symbol is a string and the operand on the right side is an integer, it becomes the _______________ operator.

Question 23

A(n) _______________ exception will occur if you try to use an index that is out of range for a particular string.

Question 24

When accessing each character in a string, such as for copying purposes, you would typically use a while loop.

Question 25

A(n) _______________ is a span of characters that are taken from within a string.

Question 26

Strings are _______________, which means that once a string is created, it cannot be changed.

Question 27

If a whole paragraph is included in a single string, the split() method can be used to obtain a list of the sentences included in the paragraph.

Question 28

An expression of the form string[i] = 'i' is a valid expression.

Question 29

The _______________ operator can be used to determine whether one string is contained in another string.

Question 30

The _______________ method returns the list of the words in the string.

Question 31

The third number in string slicing brackets represents the _______________ value.

Question 32

The _______________ method returns a copy of the string with all alphabetic letters converted to lower case.

Question 33

The strip() method returns a copy of the string with all leading whitespace characters removed, but does not remove trailing whitespace characters.

Question 34

The _______________ method returns true if the string contains only numeric digits.

Question 35

If the + operator is used on strings, it produces a string that is the combination of the two strings used as its operands.