py3_converting_ex.py.html

# coding: utf-8

# In[ ]:


ex4_py3_01


# In[1]:


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 ('sample it')


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ex5_py3_02


# In[7]:


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 %s inches tall." %my_height)
print ("He's %d inches tall." %my_height)
print ("He's %r inches tall." %my_height)
print ("He's %d pounds heavey." % my_weight)
print ("Acutually 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)))

# ===%d==== not  ==d%==  格式务必注意


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ex6_py3_03


# In[9]:


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)

print ("test-I also said: %s."  %y)
ok = False

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

 # # why not to use  x% d%" ??


print (joke_evaluation %ok)


w = "This is the left side of..." 
e = "a string with a right side." 

print (w + e)






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ex8_py3_04


# In[15]:


formatter = "%r%r%r%r"
print ("one \n two")
print (formatter % (1, 2, 3, 4))
print (formatter % ("one", "two", "three", "four"))
print (formatter % (formatter, formatter, formatter, formatter))

print (formatter % (
 "I had this thing.",
 "That you could type up right.",
 "But it didn't sing.",  # why with double-quote ??
 "So I said goodnight."
 ))
 


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e11_py3_05


# In[21]:


print ("How old are you?",)
age = int(input("-->"))
print ("How tall are you?",)
height = input("-->")
print ("How much do you weigh?",)
weight = input("-->")

print ("So, you are %d old, %r tall and %r heavy. " %(age, height, weight))


# In[ ]:


e11_py3_06


# In[24]:


from sys import argv

script,user_name = argv  ## please note that spell the word "script" correctly
prompt = '>'

print ("HI %s, I'm the %s script." %(user_name, script))

print("I'd like to ask you a few questions.")
print ("Do you like me %s" %user_name)

likes = input(prompt)
print ("where do you live %s ?" %user_name)
lives = input(prompt)

print ("what kind of computer do you have?")
computers = raw_input(prompt)

print ("""
Alright, so you said %r about liking me.
You live in %r. Not sure where that is.
And you have a %r computer. Nice.
""" %(likes, lives, computers) )  ## plz note that do not miss the "%"


# In[ ]:


e11_py3_07


# In[25]:


# -*- coding: utf-8 -*- 

def add(a, b):
    print ("ADDING %d + %d" % (a, b))
    return a + b  ## 函数中一定要有return返回值才是完整的函数

def subtract(a, b):
    print ("SUBTRACTING %d - %d" % (a, b))
    return a - b

def multiply(a, b):
    print ("MULTIPLYING %d * %d" % (a, b))
    return a * b
    
def divide(a, b):
    print ("DIVIDING %d / %d" % (a, b))
    return a / b


print ("Let's do some math with just functions!")

age = add(30, 5)
height = subtract(78, 4)
weight = multiply(90, 2)
iq = divide(100, 2)

print ("Age: %d, Height: %d, Weight: %d, IQ: %d" % (age, height, weight, iq))


# A puzzle for the extra credit, type it in anyway.
print ("Here is a puzzle.")

what = add(age, subtract(height, multiply(weight, divide(iq, 2))))

print ("That becomes: ", what, "Can you do it by hand?")


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