read()方法從檔讀取大小最多位元組。如果讀取可得到位元組大小之前命中EOF，則它只讀取可用的位元組。
語法
以下是 read()方法的語法 -
fileObject.read( size );
參數
-
size -- 這是從檔中讀取的位元組數。
返回值
此方法返回讀取的位元組數的字串形式
示例
下麵的示例演示 read()方法的使用。
Assuming that 'foo.txt' file contains following text: This is 1st line This is 2nd line This is 3rd line This is 4th line This is 5th line
#!/usr/bin/python3
# Open a file
fo = open("foo.txt", "r+")
print ("Name of the file: ", fo.name)
line = fo.read(10)
print ("Read Line: %s" % (line))
# Close opened file
fo.close()
當我們運行上面的程式，會產生以下結果 -
Name of the file: foo.txt Read Line: This is 1s
上一篇：
Python3模組
下一篇：
Python3檔方法