【Python爬虫】-笨办法学 Python 习题01

习题一:

-*- coding: utf-8 -*-
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.');

加分题:

1.
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.\n');
2.
print("Hello World!",end=' ')
print("Hello Again",end=' ')
print("I like typing this.",end=' ')
print("This is fun.",end=' ')
print("Yay!Printing.",end=' ')
print("I'd much rather you 'not'.",end=' ')
print('I "said" do not touch this.\n',end=' ');

3.“#”的作用为表明此行为注释,python解释器将不做处理。

习题二:

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 pice of code:
print("This won't run.")

print("This will run.")

加分题


习题三:

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 trus 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)

加分题:

1.
打印出"I will now count my chickens:"这句话
print("I will now count my chickens:")

打印出Hens以及“25+30/6”的运算结果
print("Hens",25+30/6)

打印出Roosters,以及“100-25*3%4的运算结果”
print("Roosters",100-25*3%4)

打印出“Now I will count the eggs:”
print("Now I will count the eggs:")

打印出“3+2+1-5+4%2-1/4+6”的运算结果
print(3+2+1-5+4%2-1/4+6)

打印出 “Is it trus 3+2<5-7?”这句话
print("Is it trus 3+2<5-7?")

打印“3+2<5-7” 的运算结果 
print(3+2<5-7)

打印出“What is 3+2?”,以及3+2的结果
print("What is 3+2?",3+2)

打印出“What is 5-7?”,以及5-7的结果
print("What is 5-7?",5-7)

打印出“Oh,that's why it's False.”
print("Oh,that's why it's False.")

打印出“How about some more.”
print("How about some more.")

打印出“Is it greater?”,以及5>-2的结果
print("Is it greater?",5>-2)

打印出“Is it greater or equal?”,以及5>=-2的结果(True of False)
print("Is it greater or equal?",5>=-2)

打印出“Is it less or equal?”,以及5<=-2的结果(True of False)
print("Is it less or equal?",5<=-2)

3.
print(666+777)

4.
区别于定点数的一种表示方法,表示更大范围的数。

5.
print("I will now count my chickens:")
print("Hens",25+30。0/6)
print("Roosters",100-25*3%4)

print("Now I will count the eggs:")
print(3+2+1-5+4%2-1.0/4+6)

print("Is it trus 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)

习题四:

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,"cars avalialbe.")
print("There are only",drivers,"drivers avalialbe")
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.")

加分题

错误原因:第八行的car_pool_capacity没有声明
1.只是4的话,在进行运算的时候会造成误差。
2.
3.
        为cars赋值100
        cars = 100

        为space_in_a_car负值4.0
        space_in_a_car = 4.0

        为drivers赋值30
        drivers = 30

        为passengers赋值90
        passengers = 90

        将cars - drivers值赋给cars_not_driven
        cars_not_driven = cars - drivers
        cars_driven = drivers
        carpool_capacity = cars_driven * space_in_a_car
        average_passengers_per_car = passengers / cars_driven

习题五:

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("Hia 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)))

加分题

1.

name = 'Zed A. Shaw'
age = 35 # not a lie
height = 74 # inches
weight = 180 # lbs
eyes = 'Blue'
teeth = 'White'
hair = 'Brown'

print("Let's talk about %s." % name)
print("He's %d inches tall." % height)
print("He's %d pounds heavy." % weight)
print("Actually that's not too heavy.")
print("He's got %s eyes and %s hair." % (eyes,hair))
print("Hia teeth are usually %s depending on the coffee" % teeth)
this line is tricky, try to get it exactly right
print("If I add %d, %d, and %d I get %d." % (
age,height,weight,(age + height + weight)))


2.
print("This is %r" % '888')
print("This is %r" % 666)

3.
%s  字符串
%r  原始字符串
%c  单个字符
%d  十进制数
%f  浮点数
%%  字符%
%e  指数e

4.
x=float(input("输入厘米:"))
print("%f 厘米为 %f 英寸" % (x,x/2.54))


x=float(input("输入kg:"))
print("%f kg为 %f 英镑" % (x,x*(1/0.3732)))

习题六

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)

加分题

1.
    通过%d 将10写入字符串,将字符串赋给变量x
    x = "There are %d types of people." % 10
    
    将字符串“binary”赋给变量binary
    binary = "binary"
    
    将字符串“don't”赋给变量do_not
    do_not = "don't"
    
    通过两个%s 将binary 与do_not添加至字符串,将字符串赋给y
    y = "Those who know %s and those who %s." % (binary, do_not)
    
    打印x
    print(x)
    
    打印y
    print(y)
    
    通过%r 将x所代表的字符串添加至需要打印的字符串。
    print("I said: %r." % x)
    
    通过%s 将y所代表的字符串添加至需要打印的字符串。
    print("I also said: '%s'." % y)
    
    False赋值给hilarious
    hilarious = False
    
    将字符串赋给koke_evaluation
    joke_evaluation = "Isn't that joke so funny?! %r"
    
    通过joke_evaluation中的%r 将hilarious添加至所打印的字符串中
    print(joke_evaluation % hilarious)

    将字符串赋给w
    w = "This is the left side of..."
    
    将字符串赋给e
    e = "a string with a right side."
    
    打印w与e的合并字符串
    print(w + e)
    

2.
    y = "Those who know %s and those who %s." % (binary, do_not)
    print("I said: %r." % x)
    print("I also said: '%s'." % y)
    print(joke_evaluation % hilarious)
3.、
4.通过运算符重载实现。

习题七

print("Mary had a little lamb.")
print("Tts fleecs was white as %s." % 'snow')
print("ANd everywhere thar 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"

print(end1 + end2 + end3 + end4 + end5 + end6,)
print(end7 + end8 + end9 + end10 + end11 + end12)

习题八

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

习题九

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("Here are the months:%r" % 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.
""")

习题十

tabby_cat="\tI'm tabbled in."
persian_cat="I'm split \n on a line."
backslash_cat="I'm \\ a \\ cat."

fat_cat='''
I'll do a list:
\t* Cat food
\t* Fishes
\t* Catnip\n\t* Grass
'''

print(tabby_cat)
print(persian_cat)
print(backslash_cat)
print(fat_cat)

你可能感兴趣的:(【Python爬虫】-笨办法学 Python 习题01)