read()方法读取文件size个字节大小。如果读取命中获得EOF大小字节之前,那么它只能读取可用的字节。
语法
以下是read()方法的语法:
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fileObject.read( size ); |
参数
- size -- 这是可以从文件中读取的字节数。
返回值
此方法返回读取字符串中的字节数。
例子
下面的例子显示了read()方法的使用。
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#!/usr/bin/python # Open a file fo = open ( "foo.txt" , "rw+" ) print "Name of the file: " , fo.name # Assuming file has following 5 lines # This is 1st line # This is 2nd line # This is 3rd line # This is 4th line # This is 5th line line = fo.read( 10 ) print "Read Line: %s" % (line) # Close opend file fo.close() |
当我们运行上面的程序,它会产生以下结果:
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Name of the file : foo.txt Read Line: This is 1s |