#ex1.py

1 #print("Hello world!")

2 print("Hello again")

3 print("I like typing this.")

4 print("This is fun.")

5 print('Yay!Printing.')

6 print("I'd much rather you 'not'.")

7 print('I "said" do not touch this.')

8 print('')

#ex2.py
1 # A comment, this is so you can read your program later.

 # Anything after the # is ignored by python.

 print("I could have code like this.") # and the comment after is ignored)

 # You can also use a comment to "disable"or comment out a piece of code:

 # print("This won't run.")

 print("This will run.")

 #ex3.py
 1 print("I will now count my chickens:")

 print("Hens",25+30/6)

 print("Poosters",100-25*3%4)

 print("Now I will count the eggs:")

 print(3+2+1-5+4%2-1//4+6)

 print("Is it true that 3+2<5-7?")

 print(3+2<5-7)

 print("What is 3+2?",3+2)

 print("What is 5-7?",5-7)

 print("Oh,that's why it's False.")

 print("How about some more.")

 print("Is it greater?",5 > -2)

 print("Is it greater or equal?",5 >= -2)

 print("Is it less or equal?",5 <= -2)

 #ex4.py
 1 #给变量cars赋值为100

 cars = 100

 #给变量space_in_a_car赋值为4.0

 space_in_a_car = 4

 #给变量drivers赋值为30

 drivers = 30

 #给变量passengers赋值为90

 passengers = 90

 cars_not_driven = cars - drivers

 cars_driven = drivers

 carpool_capacity = cars_driven * space_in_a_car

 average_passengers_per_car = passengers // cars_driven

 print("There are",cars,"cars available.")

 print("There are only",drivers,"drivers available.")

 print("There will be",cars_not_driven,"empty cars today.")

 print("We can transport",carpool_capacity,"people today.")

 print("We have",passengers,"to carpool today.")

 print("We need to put about",average_passengers_per_car,"in each car.")

 #ex5.py
 1 my_name = 'Zed A. Shaw'

 my_age = 35 # not a lie

 my_height = 74 # inches

 my_weight = 180 #lbs

 my_eyes = 'Blue'

 my_teeth = 'White'

 my_hair = 'Brown'

 print("Let's talk about %s."% my_name)

 print("He's %d inches tall."% my_height)

 print("He's %d pounds heavy."% my_weight)

 print("Actually that's not too heavy.")

 print("His teeth are usually %s depending on the coffee."% my_teeth)

 # this line is tricky,try to get it exactly right

 print("If I add %d,%d,and %d I get %d."%(my_age,my_height,my_weight,my_age+my_height+my_weight))

 #ex6.py
 1 x = "There are %d types of people."%10

 binary = "binary"

 do_not = "don't"

 y = "Those who know %s and those who %s."%(binary,do_not)

 print(x)

 print(y)

 print("I said:%r."%x)

 print("I also said:'%s'."%y)

 hilarious = False

 joke_evaluation = "Isn't that joke so funny?!%r"

 print(joke_evaluation % hilarious)

 w = "This is the left side of..."

 e = "a string with a right side."

 print(w+e)

 #ex7.py
 1 print("Mary had a little lamb.")

 print("Its fleece was white as %s."%'snow')

 print("And everywhere that Mary went.")

 print("."*10) # what'd that do?

 end1 = "C"

 end2 = "h"

 end3 = "e"

 end4 = "e"

 end5 = "s"

 end6 = "e"

 end7 = "B"

 end8 = "u"

 end9 = "r"

 end10 = "g"

 end11 = "e"

 end12 = "r"

 # watch that comma at the end. try removing it to see what happens

 print(end1+end2+end3+end4+end5+end6,end=" ")

 print(end7+end8+end9+end10+end11+end12)

 #ex8.py
 1 formatter = "%r %r %r %r"

 print(formatter %(1,2,3,4))

 print(formatter %("one","two","three","four"))

 print(formatter %(True,False,False,True))

 print(formatter %(formatter,formatter,formatter,formatter))

 print(formatter %(

 "I had this thing.",

 "That you could type up right.",

 "But it didn't sing.",

 "So I said goodnight."

 ))

 #ex9.py
 1 # Here's some new strange stuff,remember type it exactly.

 days = "Mon Tue Wed Thu Fri Sat Sun"

 months = "Jan\nFeb\nMar\nApr\nMay\nJun\nJul\nAug"

 print("Here are the days: ",days)

 print("Here are the months: ",months)

 print("""

 There's something going on here.

 With the three double-quotes.

 We'll be able to type as much as we like.

 Even 4 lines if we want,or 5,or 6.

 """)

 #ex10.py
 1 tabby_cat = "\tI'm tabbed in."

 persian_cat = "I'm split\non a line."

 backslash_cat = "I'm \\a\\ cat."

 fat_cat = '''

 I'll do a list:

 \t* Cat food

 \t* Fishies

 \t* Catnip\n\t* Grass

 '''

 print(tabby_cat)

 print(persian_cat)

 print(backslash_cat)

 print(fat_cat)