Python檔案的read()
方法從檔案讀取size
個位元組。如果在獲取size
位元組之前命中EOF,則它唯讀取少size
位元組的可用資料。
語法
以下是read()
方法的語法 -
fileObject.read( size );
引數
返回值
size
個位元組的字串。範例
假設’foo.txt
‘檔案中包含以下行 -
This is 1st line
This is 2nd line
This is 3rd line
This is 4th line
This is 5th line
以下範例顯示了read()
方法的用法。
#!/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()
執行上面程式碼後,將得到以下結果 -
Name of the file: foo.txt
Read Line: This is 1s