String Methods

Question 1

.capitalize()

Answer 1

(string method)

Converts the first character to upper case

Question 2

.casefold()

Answer 2

(string method)

Converts all the uppercase letters in a string to lowercase letters

Question 3

.count(substr)

Answer 3

(string method)

counts the number of times the substr appears in string

Question 4

.endswith(substr)

Answer 4

(string method)

Returns true if the string ends with the substr, else False

Question 5

.find(substr)

Answer 5

(string method)

Returns the index of the first occurence of the substr in the string

Returns -1 if substr not found in string

Question 6

.format()

example

“My name is {}, I’m {}”.format(“John”,36)

“My name is {0}, I’m {1}”.format(“John”,36)

“My name is {fname}, I’m {age}”.format(fname = “John”, age = 36)

Answer 6

(string method)

The format() method formats the specified value(s) and insert them inside the string’s placeholder.

The placeholder is defined using curly brackets: {}

Question 7

.index(substr)

Answer 7

(string method)

returns the index of the specified substr in the str

raises an exception if the value is not found

(very similar to .find(), but .find() return -1 when the substr is not found)

Question 8

.isalnum()

Answer 8

(string method)

returns True if all characters are alphanumeric

Question 9

.isalpha()

Answer 9

(string method)

Returns True if all characters in the string are in the alphabet

Question 10

.isascii()

Answer 10

(string method)

Returns True if all characters in the string are ascii characters

Question 11

.isdigit()

Answer 11

(string method)

Returns True if all characters in the string are digits

Question 12

.lower()

Answer 12

(string method)

Returns the lowercased value of the input string

Question 13

.replace(old, new, count)

Answer 13

(string method)

returns a copy of the string where the old substring is replaced with the new string

params
1. old = value to replace
2. new = what to replace it with
3. (optional) # of instances (defaults to replacing ALL)

Question 14

.upper()

Answer 14

(string method)

method returns a string where all characters are in upper case.

Question 15

.strip()

Answer 15

(string method)

Returns a trimmed version of the string (no trailing or leading spaces)

Question 16

len(str)

Answer 16

(built-in)

returns length of the string

Question 17

.title()

Answer 17

(string method)

Returns the string in title case

Question 18

.split(separator)

Answer 18

(string method)

splits a string into a list, returns that list

you can specify a separator, or the separator is whitespace