python基础教程（第2版）-书上练习(python3)

Author: tianwei1992

#2-my-1.py

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+#2-my1.py
+wei=['tian wei',24]
+hong=['li hong',48]
+guang=['tian guang zhi',49]
+database=[wei,hong,guang]
+print(database)
+while True:
+	name=input('input your full name:')
+	find=False
+	for firstname in database:
+		if firstname[0]==name:
+			print('your name is :'+name,'and your age is',str(firstname[1]))
+			find=True
+	if find==False:
+		print('you are not in the list')
+
+
+
+

#7-my-3.py

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+#7-my-3.py
+#super class

#qt1.py

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+#qt1.py
+class A:
+	def __init__(self, *args): 
+		self.contained = args  
+	def __iter__(self): 
+		for elem in self.contained:   
+			yield elem + 1 
+
+a=A(1,2,3)
+print(a.next())
+print(a.next())
+print(a.next())

1.py

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+#2-3.py
+#to print a sentense in the midlle of a box
+sentense=input("Sentence:")
+screen_width=80
+text_width=len(sentense)
+box_width=text_width+6
+left_margin=(screen_width-box_width)//2
+print
+print(' '*left_margin+'+'+'-'*(box_width-2)+'+')
+print(' '*(left_margin+4)+'|'+' '*text_width+'|')
+print(' '*(left_margin+4)+'|'+sentense+'|')
+print(' '*(left_margin+4)+'|'+' '*text_width+'|')
+print(' '*left_margin+'+'+'-'*(box_width-2)+'+')
+print
+

10-my-1.py

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+#10-my-1.py
+#import module
+
+
+
+#import sys
+#sys.path.append('f:\python')
+import foo
+print(dir(foo))
+print()
+print()
+import copy
+#print(copy.__all__)
+#print(copy.__doc__)
+#from copy import dispatch_table
+#copy.dispatch_table
+
+#public interface
+#print(copy.__all__)
+print()
+#print(copy.__doc__)
+print()
+#print(copy.__file__)
+print()
+#print(dir(copy))
+print()
+#print(help(copy))
+print()
+#print([n for n in dir(copy) if  not n.startswith('_')])

11-1.py

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+#11-1.py
+#pipeline
+#somescript.py
+#sys.stdin
+#sys.stdout
+#sys.stderror
+import sys
+sys.path.append('..')
+import foo2
+import sys
+text=sys.stdin.read()
+words=text.split()
+count=len(words)
+print('contain %d words'%count)
+

11-11.py

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+#11-11.py
+#fileinput.input
+def process(line):
+	print(line)
+import fileinput
+for line in fileinput.input('somefile.txt'):
+	process(line)
+

11-12.py

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+#11-12.py
+#file iteration
+f=open(r'somefile.txt')
+for line in f:
+	print(line)
+f.close()

11-13.py

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+#11-13.py
+from __future__ import with_statement
+for line in  open(r'somefile.txt'):
+	print(line)
+
+print(list(open(r'somefile.txt')))
+print(open(r'somefile.txt'))
+a,b,c=open(r'somefile.txt')
+
+print(a)
+print(b)
+print(c)

11-3.py

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+#11-3.py
+#basic file functions
+f=open(r'somefile.txt')
+print(f.read(7))
+print(f.read(4))
+f.close()
+
+
+f=open(r'somefile.txt')
+print(f.read())
+f.close()
+
+
+
+f=open(r'somefile.txt')
+for i in range(3):
+	print(f.readline())
+f.close()
+
+import pprint
+pprint.pprint(open(r'somefile.txt').readlines())
+
+
+f=open(r'somefile.txt','w')
+f.write('this\nis no\n haiku')
+f.close()
+f=open(r'somefile.txt','r')
+lines=f.readlines()
+print(lines)
+f.close()
+lines[1]="isn't a\n"
+
+f=open(r'somefile.txt','w')
+f.writelines(lines)
+f.close()
+pprint.pprint(open(r'somefile.txt').readlines())