Python入门的36个例子 之 28
源代码下载：下载地址在这里
# 032
# 其实cPickle这个模块起到的作用可以用“完美地协调了文件中的内容（对象）和代码中的引用”来形容
import cPickle as p # 这条语句给cPickle起了个小名p
objectFileName = r'C:\Data.txt'
aList = [1, 2, 3]
f = file(objectFileName, 'w')
p.dump(aList, f)
f.close()
del aList # 现在已经没有aList所指的对象了，甚至没有aList这个引用了
f = file(objectFileName, 'r')
storedObject = p.load(f)
print storedObject
output:
>>>
[1, 2, 3]
>>>
当然，在文件中，Python采用了一种便于自己分辨对象类型的格式来存储：
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# 017
def lifeIsAMirror():
string = raw_input()
if string == 'I love you!':
return 'I love you, too!'
elif string == 'Fuck you!':
return ''
else:
return
# end of def
string = lifeIsAMirror()
if len(string) == 0:
print 'You have nothing.'
else: ......
源代码下载：下载地址在这里
# 023
# Tuple(元素组)是不可变的列表
tuple1 = (1, 2, 3)
print tuple1
tuple2 = (tuple1, 4, 5, 6) # 一个元素组可以作为另外一个元素组的元素
print tuple2 # 并且能够在存储的时候保持原始的逻辑关系
for ele in tuple2:
print ele
print '\n'
for ele in tuple2[0]:
pr ......
# 027
toolName = 'Google'
if toolName.startswith('Go'):
print 'The tool\'s name starts with \"Go\".'
if 'oo' in toolName:
print 'The tool\'s name contains the stirng "oo".'
print toolName.find('gl') # 返回首次出现“gl”字符串的索引
if toolName.find('Baidu ......
源代码下载：下载地址在这里
# 029
aFile = file(r'C:\in.txt', 'r')
while True:
line = aFile.readline()
if len(line) == 0:
break
# end of if
print line,
# end of while
aFile.close()
output：
>>>
This is the first line.
This is the second line.
This is ......
