python的流
参考http://linux.chinaitlab.com/manual/python_chinese/ch12.htmlhelp(file)
#!/usr/bin/python# Filename: using_file.pypoem = '''\Programming is funWhen the work is doneif you wanna make your work also fun: use Python!'''f = file('poem.txt', 'w') # open for 'w'ritingf.write(poem) # write text to filef.close() # close the filef = file('poem.txt')# if no mode is specified, 'r'ead mode is assumed by defaultwhile True: line = f.readline() if len(line) == 0: # Zero length indicates EOF break print line, # Notice comma to avoid automatic newline added by Pythonf.close() # close the fil
$ python using_file.py
Programming is fun
When the work is done
if you wanna make your work also fun:
use Python!
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#!/usr/bin/python# Filename: pickling.pyimport cPickle as p#import pickle as pshoplistfile = 'shoplist.data'# the name of the file where we will store the objectshoplist = ['apple', 'mango', 'carrot']# Write to the filef = file(shoplistfile, 'w')p.dump(shoplist, f) # dump the object to a filef.close()del shoplist # remove the shoplist# Read back from the storagef = file(shoplistfile)storedlist = p.load(f)print storedlist
上次看是1周，这次是一晚上
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