wikibooks Python 1

Question 1

print “hello world”

Answer 1

print (‘hello world’)

Question 2

Variable definition

Answer 2

something that holds a value that can change

Question 3

Variable in which red is equal to 5

Answer 3

red = 5

Question 4

Variable in which blue equals 10

Answer 4

blue = 10

Question 5

Program which runs with the variables red and blue based on previous variable assignment placing red and then blue

Answer 5

print (red, blue)

5 10

Question 6

Name of Variable location

Answer 6

left of equals sign

Question 7

Value of Variable location

Answer 7

right of equals sign

Question 8

String definition

Answer 8

a list of characters in order

Question 9

Three ways to declare a string

Answer 9

Single quotes (‘)
Double quotes (“)
Triple quotes (“””)

Question 10

Escaping the symbol definition

Answer 10

Placing a backslash before a symbol to show that the symbol should be included in the string

Question 11

Escaping a quotation mark example

Answer 11

print&raquo_space;> (“So I said, \”You don’t know me! You’ll never understand me!\””)

Question 12

Concatenation operator

Answer 12

+

Question 13

Concatenation example

Answer 13

> > > print (“Hello, “ + “world!”)

Hello, world!

Question 14

Repeat strings operator

Answer 14

*

Question 15

Repeat strings example

Answer 15

> > > print (“bouncy, “ * 3)

bouncy, bouncy, bouncy,

Question 16

Function which finds the length of a string

Answer 16

len()

Question 17

Finding string length example

Answer 17

> > > print (len(“Hello, world!”))

13

Question 18

Function that turns a string into an integer

Answer 18

int()

Question 19

Function that turns an integer into a string

Answer 19

str()

Question 20

Function which outputs the information to the user

Answer 20

print()

Question 21

Function which asks the user for a response and returns that response

Answer 21

input()

Question 22

Are variables case-sensitive?

Answer 22

yes

Question 23

Can spaces be substituted for tabs?

Answer 23

no

Question 24

Object definition

Answer 24

aggregations of code and data which typically represent the pieces in a conceptual model of a system

Question 25

Attributes definition

Answer 25

represent various pieces of code and data which make up the object

Question 26

How to access attribute

Answer 26

object.attribute

Question 27

Example of upper attribute

Answer 27

‘bob’.upper

Question 28

Program to make ‘bob’ into ‘BOB’

Answer 28

‘bob’.upper()

Question 29

Scope definition

Answer 29

a region of code in which a name can be used and outside of which the name cannot be easily accessed

Question 30

2 ways of delimiting scope

Answer 30

Functions

Modules

Question 31

Namespace definition

Answer 31

A particular place in which names specific to a module reside

Question 32

Seven Common Sequence Types

Answer 32

strings, Unicode strings, lists, tuples, bytearrays, buffers, xrange objects

Question 33

2 Containers for sequential data

Answer 33

Dictionaries

Sets

Question 34

Accessing characters in strings and elements in arrays

Answer 34

[ ]

Question 35

Accessing characters in strings example

Answer 35

> > > “Hello, world!” [0]
‘H’
“Hello, world!” [4]
‘o’

Question 36

Accessing characters in strings negative example

Answer 36

> > > “Hello, world!”[-2]
‘d’
“Hello, world!”[-13]
‘H’

Question 37

Slicing definition

Answer 37

Using indexes to divide a string into a smaller substring

Question 38

Slicing Operator

Answer 38

[ : ]

Question 39

Slicing example

Answer 39

> > > “Hello, world!” [3:9]

‘lo, wo’

Question 40

List definition

Answer 40

a list of values, organized in order

Question 41

List operator

Answer 41

[ ]

Question 42

Values in list separated by

Answer 42

,

Question 43

List example

Answer 43

spam = [“bacon”, “eggs”, 42]

Question 44

How to access bacon from the list: spam = [“bacon”, “eggs”, 42]

Answer 44

> > > spam[0]

Question 45

The length of spam. spam = [“bacon”, “eggs”, 42]

Answer 45

> > > len(spam)

3

Question 46

Can lists be sliced?

Answer 46

yes

Question 47

Add items to a list function

Answer 47

append()

Question 48

Appending items to a list example

Answer 48

> > > spam.append(10)
spam
[‘bacon’, ‘eggs’, 42, 10]

Question 49

Inserting an item into a list function

Answer 49

insert()

Question 50

Inserting item into list example

Answer 50

> > > spam.insert(1, ‘and’)
spam
[‘bacon’, ‘and’, ‘eggs’, 42, 10]

Question 51

Deleting items from a list function

Answer 51

del

Question 52

Delete item from list example

Answer 52

> > > del spam[1]
spam
[‘bacon’, eggs’, 42, 10]

Question 53

Tuple definition

Answer 53

list that can’t be changed

Question 54

Tuple function

Answer 54

,

Question 55

Tuple example

Answer 55

unchanging = “rocks”, 0, “the universe”

Question 56

Dictionary definition

Answer 56

Like a list but not bound to numbers

Question 57

2 parts of a dictionary element

Answer 57

Key

Value

Question 58

Dictionary operator

Answer 58

{ }

Question 59

Separator between key and value

Answer 59

:

Question 60

Dictionary example

Answer 60

> > > definitions = {“guava”: “a tropical fruit”, “python”: “a programming language”}

Question 61

Pulling up a definition example

Answer 61

> > > definitions[“guava”]

‘a tropical fruit’

Question 62

Set definition

Answer 62

Like a list but unordered and do not allow duplicate values

Question 63

Set operator

Answer 63

set([ ])

Question 64

Set example

Answer 64

> > > mind = set([42, ‘a string’, (23, 4)])

Question 65

Frozenset definition

Answer 65

an immutable version of a set

Question 66

Frozenset operator

Answer 66

frozenset([ ])

Question 67

Frozenset example

Answer 67

> > > frozen=frozenset([‘life’, ‘universe’, ‘everything’])

Question 68

4 types of data

Answer 68

Numeric
Sequences
Sets
Mappings

Question 69

4 numeric types

Answer 69

int
long (only python 2)
float
complex

Question 70

5 sequence types

Answer 70

str
bytes (only python 3)
byte array (only python 3)
list
tuple

Question 71

2 set types

Answer 71

set

frozenset

Question 72

1 mapping type

Answer 72

dict

Question 73

Mutable objects definition

Answer 73

objects that can be changed after they’re created

Question 74

Immutable object definition

Answer 74

objects that can’t be changed after they’re made

Question 75

8 immutable types

Answer 75

int, float, complex, str, bytes, tuple, frozenset, bool

Question 76

5 mutable types

Answer 76

array
byte array
list
set
dict