10
这一题主要是了解换行以及反斜杠
tabby_cat = "\tI'm tabbed in ." #t是tab键，表示4个空格
persian_cat = "I'm split\non a line." #\ns是换行
backslash_cat = "I'm \\ a \\ cat." #两个反斜杠打印出来是一个反斜杠
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)
09
这一节课是换行以及三引号的用法。\n表示换行，“”“表示每个句子换行
#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 went, or 5,6.
""") #三个双引号的意思是每个句子之后换行
08
这一节课主要是取字符，以及嵌套的取
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"
))
07
这道题涉及的知识点是重复打印以及不换行的print两行字符，按照书上的方式没有实现，去网上搜了一下，了解到了print结尾默认有个换行符，可以把换行符换成end，或者对end进行赋值，这样就可以打在一行或者在两组字符之间加符号之类的
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 ? 打10个点
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)
06
这节课的知识点是取字符。”%“前面的命令向后取字符。%d表示数字，%s表示文本。
ps：这道题出现了一个bug就是print前面如果没有条件的话，不要出现空格，否则会报错。
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)
05
这道题的知识点仍旧是取字符。以及可以用”+“将字符组连在一起。
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) #“%”表示取后面的字符串，S是文本，d是数字
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))
04
这道题是对函数进行赋值，然后进行运算。后面的运算命令会直接运算前面的所赋的值
cars = 100 #有100辆车
space_in_a_car = 4.0 #一辆车有4个座位
drivers = 30 #有30个司机
passengers = 90 #有90个乘客
cars_not_driven = cars - drivers #不能用的车=车的数量-司机的数量
cars_driven = drivers #能使用的车=司机的数量
carpool_capacity = cars_driven * space_in_a_car #车载空间=能使用的车*每辆车的座位数量
average_passengers_per_car = passengers / cars_driven #平均车载空间=乘客数/能使用的车
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.")
03
这道题主要学会了各种运算符号。尤其是”/“是代表除法，结果会有小数，”//“代表整除，显示结果的整数部分，”%“会返回余数。除了加减乘除商余之外，还有乘方，”pow（2,3）“或”2**3“表示2^3；int是转化成整数；float是转化成浮点数。
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)
02
本节知识点：在语句前面加#表示注释，这样一来后续在review的时候就能快速看懂这一行代码是啥意思啦，相当聪明的表达方式。
#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.")
01
刚开始写这一节课的时候觉得很简单。后来听说print这个命令后续可能用来帮我们检查代码以及做运算，了解到了更深层次的用法。写这10节课总会出现一些小问题，果然是在写error的过程呢。
print("Hello World !")
print("Hello Again")
print("I like tying this.")
print("This is fun.")
print('Yay! Printing.')
print("I'd much rather you 'not'.")
print('I"said" do not touch this.')
这周作业delay了，还在全力补作业中。
