read()方法讀取文件size個字節大小。如果讀取命中獲得EOF大小字節之前，那么它只能讀取可用的字節。
語法

以下是read()方法的語法：

fileObject.read( size );

參數

返回值

此方法返回讀取字符串中的字節數。
例子

下面的例子顯示了read()方法的使用。

#!/usr/bin/python# Open a filefo = 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 lineline = fo.read(10)print "Read Line: %s" % (line)# Close opend filefo.close()

當我們運行上面的程序，它會產生以下結果：

Name of the file: foo.txtRead Line: This is 1s