Python 2 Flashcards

Question

Why does this produce a syntax error? >>> print('She said, "Thank you! It's mine."') and how to fix it?

Answer 1

-There were 3 single quotes You can fix it by: -Adding a backslash before the second single quote (It\'s) =Adding a triple quote ex: ' ' ' She said, "Thank you! It's mine." ' ' '

Answer 2

-Adding a triple double quote

Answer 3

>>> print ( " " "Hello World !""""

Answer 4

means to join two or more strings into a single string and the + sign is its operator

Answer 5

print ("Hello, " + "how " + "are " + "you ")

Answer 6

You use the multiplication sign (*) print ("Are We There Yet? " * 3)

Answer 7

-use the len() function >>>a = "Pen" >>> len (a) 3 >>> b = "Hello World!" >>> len (b) 12

Answer 8

str () is used to create a new string from a non-string type >>> a = 123 >>> str (a) '123'

Answer 9

It makes the first letter in every word capitalized a = "This is a testing" a.title() 'This Is A Testing'

Answer 10

Makes every letter capitalzied b = "This is a testing." b.upper() "THIS IS A TESTING"

Answer 11

Makes every letter lower cased c = "THIS IS A TESTING" c.lower() 'this is a testing'

Answer 12

Gives a true or false answer if the string contains only digits a = "Only 2 students" a.isdigit () False b = 3 b.isdigit () True

Answer 13

Gives a true or false answer if the string contains all lower case letters d = "hello world!" d.islower () True e =Hello world!" e.islower () Fakse

Answer 14

Strings can be indexed with the first character having index 0 >>> word = "Python" >>> word [0] 'p' >>>word [-1] 'n' >>> word [-4] 't'

Answer 15

'p' in lower case -0 is the same as 0 so negative indices start from -1

Answer 16

>>> print ("{} needs {} cups of coffee".format ("Ben",3)) Ben needs 3 cups of coffee >>>print ("{1} needs {0} cips of coffee".format("Ben",3)) 3 needs Ben cups of coffee >>>print ("{name} needs {numbers} cups of coffee".format (name="Ben", number = 3)) Ben needs 3 cups of coffee

Answer 17

>>> word = "Python" >>> word [:3] 'Pyt' >>> word [1:5] 'ytho' >>> word[4:] 'on' >>> word [-2] 'on' >>> word [:] 'Python

Answer 18

-Using a comma >>> name = "Ben' >>> age = 25 >>> print ("My name is", name) My name is Ben >>> print ("My name is", name, "and I am", age, "years old") My name is Ben and I am 25 years old

Answer 19

-Equal -Not equal -Less than -Greater than -Greater than or equal to -Less than or equal to

Answer 20

age = 30 name = Jack PRINT (name + ' is ' + str(age) + ' years old. ' ) Jack is 30 years old

Answer 21

age = 30 name = "Jack" print (f ' {name} is {age} years old. ' )

Answer 22

and: Determines whether both operands are true ex: True and True is True False and True is False or: Determines when one of the two operands is true ex: True and True is True True and False is True False and False is False not: negates the truth value of a single operand ex: not True is False not False is True

Answer 23

Parentheses are evaluted first then followed by the not operators then the and operators then the or operators

Answer 24

Use the fucntion input () ex: >>> text = input () What are you waiting for? >>> print (text) What are you waiting for The program stops and waits for user to type something When the user presses enter the program resumes and input returns what the user typed as a string

Answer 25

>>> name = input ('What is your name?') What is your name? Arthur Clarke >>> print (name) Arthur Clarke

Answer 26

Convert the return value to int () ex: >>> prompt= "How old are you?\n" >>> age = input (age) 17 >>> int (age) 17