一 實戰——第一個程式

1 ex1.py

print "Hello World!"
print "Hello Again"
print "I like typing this."
print "This is fun."
print 'Yay! Printing.'
print "I'd much rather you 'not'."
print 'I "said" do not touch this.'

2 執行結果

PS C:\Users\cakin> cd E:\Python\exercise

PS E:\Python\exercise> python ex1.py

Hello World!

Hello Again

I like typing this.

This is fun.

Yay! Printing.

I'd much rather you 'not'.

I "said" do not touch this.

二 實戰2——註釋和井號“#”

1 ex2.py

# 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."
 

2 執行結果

PS E:\Python\exercise> python ex2.py

I could have code like this.

This will run.

三 實戰3——數字和數學計算

1 ex3.py

print "I will now count my chickens:"
print "Hens", 25 + 30 / 6
print "Roosters", 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
 

2 執行結果

PS E:\Python\exercise> python ex3.py

I will now count my chickens:

Hens 30

Roosters 97

Now I will count the eggs:

7

Is it true that 3 + 2 < 5 - 7?

False

What is 3 + 2? 5

What is 5 - 7? -2

Oh, that's why it's False.

How about some more.

Is it greater? True

Is it greater or equal? True

Is it less or equal? False

四 實戰4——變數和命名

1 ex4.py

cars = 100
space_in_a_car = 4.0
drivers = 30
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."
print "Hey %s there." % "you"

2 執行結果

PS E:\Python\exercise> python ex4.py

There are 100 cars available.

There are only 30 drivers available.

There will be 70 empty cars today.

We can transport 120.0 people today.

We have 90 to carpool today.

We need to put about 3 in each car.

Hey you there.

五 實戰5——更多的變數和列印

1  ex5.py

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 "He's got %s eyes and %s hair." % (my_eyes, my_hair)
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)

2 執行結果

PS E:\Python\exercise> python ex5.py

Let's talk about Zed A. Shaw.

He's 74 inches tall.

He's 180 pounds heavy.

Actually that's not too heavy.

He's got Blue eyes and Brown hair.

His teeth are usually White depending on the coffee.

If I add 35, 74, and 180 I get 289.