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，那麼它隻能讀取可用的字節。

語法

以下是read()方法的語法：

fileObject.read( size );

參數

• size -- 這是可以從文件中讀取的字節數。

返回值

此方法返回讀取字符串中的字節數。

例子

下麵的例子顯示了read()方法的使用。

#!/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()

當我們運行上麵的程序，它會產生以下結果：

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