close method

1. file 物件的 close() method 更新還沒寫入的資料並關閉檔案，關閉不能再寫入資料。

   fileObject.close()
   

2. 範例：關閉檔案後測試檔案是否開啟？

   [dywang@deyu zzz]$ cat fileio2.py 
   #!/usr/bin/python3
   
   # Open a file
   fo = open("fileio.txt", "ab+")
   print("Name of the file:", fo.name)
   print("1. Closed or not:", fo.closed)
   # Close opend file
   fo.close()
   print("2. Closed or not:", fo.closed)
   

3. 執行結果：file 物件關閉後 fo.closed 回傳 True。

   [dywang@deyu zzz]$ ./fileio2.py 
   Name of the file: fileio.txt
   1. Closed or not: False
   2. Closed or not: True