9.11 first 9 exercises, 9.119 exercises

9.11 first 9 exercises, 9.119 exercises

 

1. print

(1) print the first sentence ....

1 print " Hello World! "

 

Note the use of "" And''

1 print "I'm paul" # For 2 3 print 'I am paul' # the error is changed to 'I \'m paul'

And the use of "And '''

1 print  """2 3 Hello World!4 5 Hello World!6 7 Hello World!8 9 """

 

(2) comma

print "hello world ",'abc'print "i am paul "

 

Result:

Hello world abc

I am paul

 

print "hello world "  'abc'print "i am paul "

Result:

Hello world abc

 

I am paul

 

print "hello world" ' abc',print "i am paul"

Result:

Hello world abci am paul

 

print "hello world" ' abc',"i am paul"

Syntax Error

 

(3) operator number

print "now i will count the eggs:"print 3+1+2-5+4%2-1/4print 3+2>4-2

Result:

Now I will count the eggs:

1

True

 

(4) variables and Printing

name = "paul"age = 20height = 70print "let's talk about %s"%nameprint "he's %d years old"%ageprint "he's %d inches tall"%heightprint "let's talk about %r"%nameprint "he's %r years old"%ageprint "he's %r inches tall"%height

print "if i add %d and %d,i get %d."%(age,height,age+height)

Let's talk about paul

He's 20 years old

He's 70 inches tall

Let's talk about "paul"

He's 20 years old

He's 70 inches tall

If I add 20 and 70, I get 90

 

x = "there are %d types of people."%10print x print "i said :%r "%xy =  "isn't that joke so funny? %r"z = Falseprint y%za = "this is the left of"b = "a string with a right side"print a + b

Result:
There are 10 types of people.

I said: there are 10 types of people.

Isn' t that joke so funny? False

This is the left of a string with a right side

 

print "ab " *10

Result:
AB

formatter = "%r %r %r"print formatter %(1,2,3)print formatter %("one","two","three")print formatter %(True,False,True)print formatter %(   "i had this string",   "that you could ",   "type  up right"       )

1 2 3
'One' two' 'three'

True False True

'I had this string ''that you could ''type up right'

 

1 a = "a\nb\nc\n"2 print a 

Result:

A

B

C