一个新手的Python自学之旅 #MacBook #《“笨办法”学Python》#第七章：字符串、文本、各种打印、转义序列、手动输入raw_input()

 1 # -*-coding:utf-8-*-
 2 
 3 # 第一种：直接用%d
 4 x = ‘There are %d types of people‘ % 10  
 5 
 6 #第二种：用%s来将变量转换成字符串
 7 
 8 # 定义binary
 9 binary = ‘binary‘
10 # 定义do_not
11 do_not = "don‘t"
12 # 定义y的意思（把变量转换成字符串）
13 y = ‘Those who know %s and those who %s.‘ % (binary, do_not)
14 
15 # 输出x
16 print x
17 # 输出y
18 print y
19 
20 #第三种：用%s和%r来将变量转换成字符串，该变量也适用%s和%r来定义的
21 # 输出 我说过了x （把变量转换成字符串）
22 print ‘I said: %r.‘ % x
23 # 输出 我说过了y （把变量转换成字符串）
24 print "I also said: ‘%s‘." % y
25 
26 # 定义hilarious
27 hilarious = False
28 # 用含有格式转换符的字符串定义joke_evaluation
29 joke_evaluation = "Isn‘t that joke so funny?! %r"
30 
31 # 输出一个含有转换符的变量
32 print joke_evaluation % hilarious
33 
34 # 定义W和e
35 w = ‘This is the left side of ...‘
36 e = ‘a string with a right side.‘
37 
38 # 输出 w+e
39 print w+e

 1 #-*-coding:utf-8-*-
 2 
 3 # %r和%s的区别
 4 
 5 # 有些情况下，两者处理的结果是一样的，比如处理int型对象
 6 print "1, I am %d years old" % 22
 7 print "2, I am %s years old" % 22
 8 print "3, I am %r years old" % 22
 9 print "-"*20
10 
11 
12 # 不同情况之一
13 text = "I am %d years old." % 22
14 print "4, I said: %s." % text
15 print "5, I said: %r." % text # %r打印输出时能够重现它代表的对象，这里输出结果给字符串加上单引号
16 print "-"*20
17 
18 #不同情况之二
19 import datetime
20 d = datetime.date.today()
21 print "%s" % d
22 print "%r" % d
23 print "-"*20

 1 print "Mary had a little lamb."
 2 print "Its fleece was white as %s." % ‘snow‘
 3 print "And everywhere that Mary went."
 4 print "." * 10 # print 10 points
 5 
 6 end1 = "c"
 7 end2 = "h"
 8 end3 = "e"
 9 end4 = "e"
10 end5 = "s"
11 end6 = "e"
12 end7 = "B"
13 end8 = "u"
14 end9 = "r"
15 end10 = "g"
16 end11 = "e"
17 end12 = "r"
18 
19 # watch that comma at the end. try removing it to see what happens
20 print end1 + end2 + end3 + end4 + end5 + end6,
21 print end7 + end8 + end9 + end10 + end11 + end12

 1 # -*-coding:utf-8-*-
 2 formatter = "%r %r %r %r" # 用"%r %r %r %r"试试，字符串中的格式转换符之间不需要逗号
 3 
 4 print formatter % (1, 2, 3, 4) #1，2，3，4 不需要用引号
 5 print formatter % ("one", "two", "three", "four") # 必须用引号
 6 print formatter % (True, False, False, True) #27习题中会介绍True和False的功能，不能用引号，因为引号使其变成字符串，而不是特殊意义的关键字
 7 print formatter % (formatter, formatter, formatter, formatter)
 8 print formatter %(
 9       "I had this thing.",
10       "That you could type up right.",
11       "But it didn‘t sing.",
12       "So I said goodnight."
13 )

 1 # -*-coding:utf-8-*-
 2 tabby_cat = "\tI‘m tabbed in."
 3 persian_cat = "I‘m split/non a line."
 4 backslash_cat = "I‘m \\ a \\ cat ."
 5 
 6 fat_cat = """
 7  \bI‘ll do a list:
 8 \t* Cat food \a  
 9 \t* Fishies \a \a \a 
10 \t* Catnip\n\t* Grass \a\ooo
11 """
12 # \v垂直制表符，\t水平制表符
13 # \a是响铃符，运行时会发出响铃的声音
14 # \b是退格符，运行时命令行会向前退一格
15 
16 print tabby_cat
17 print persian_cat
18 print backslash_cat
19 print fat_cat

 1 print "How old are you?",
 2 age = raw_input()
 3 print "How tall are you?",
 4 height = raw_input()
 5 print "How much do you weight?",
 6 weight = raw_input()
 7 
 8 print "so, you‘re %r old, %r tall and %r heavy." % ( age, height, weight)
 9 
10 
11 # Differences between input() and raw_input()
12 print "How old are you?",
13 age = input()
14 print "How tall are you?",
15 height = input()
16 print "How much do you weight?",
17 weight = input()
18 
19 print "so, you‘re %r old, %r tall and %r heavy." % ( age, height, weight)

1 # print "What‘s her name?",
2 name = raw_input("name?")
3 print "How many years you have known her?", # 这个逗号，可以让你输入的信息，紧接着这个问题，而不是换行。。
4 yars = raw_input("Years?")
5 print "Is she beautiful?",
6 answer = raw_input("yes or no?")
7 print "Do you like her or not?",
8 answer = raw_input("yes or no?")

 1 #-*-coding:utf-8-*-
 2 
 3 print ‘x‘,
 4 x = int(raw_input())  #只能输入数字, 否者会报错终止脚本运行
 5 
 6 print ‘y‘,
 7 y = raw_input() #既能输入数字，也能输入字符
 8 
 9 print ‘z‘,
10 name = ‘Neymagico‘
11 z = input() #既能输入数字，也能输入字符, 但是字符被python认为是个变量，需要对其定义
12             #如果输入未定义的字符，会报错

 1 from sys import exit
 2 
 3 
 4 print "Please write the words which you want to say to your father in his day!"
 5 grate = []
 6 
 7 def respect():
 8     
 9    
10 
11     words = raw_input()
12     
13     if words != ‘stop‘:
14     
15         grate.append(words)
16         print grate
17         respect()
18         
19     else: 
20         quit("ok, That‘s all to my father")
21 
22 def quit(why):
23     print why
24     exit(0)
25 
26 respect()