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read运行
#_*_ coding:utf-8 _*_
from sys import argv
from os.path import exists
script, from_file, to_file = argv
print "copying from %s to %s" % (from_file, to_file)
# We could do these two on one line too, how?
in_file = open(from_file)
indata = http://www.mamicode.com/in_file.read()#注意这里假如改短的话，改成indata = open(from_file).read()
此时结尾的in_field.close()就不再需要了，因为read一旦运行，文件就会被python 关闭
print "The input file is %d bytes long" % len(indata)
print "Does the output file exist? %r" % exists(to_file)
print "Ready, hit RETURN to continue, CTRL-C to abort."
raw_input()
out_file = open(to_file,‘w‘)
out_file.write(indata)
print "Alright, all done"
out_file.close()
in_file.close()
read运行
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