python直譯器是在與指令碼所在的目錄不同的目錄下執行時出錯的例子：

(tensorflow) [root@localhost python]# cat test.txt 
a
b
c

同目錄py檔案：

(tensorflow) [[email protected] python]# cat sto.py 
with open('test.txt', 'r') as f:
    for line in f:
        print(line)

退回上級目錄：

cd..

執行sto.py檔案：

(tensorflow) [[email protected]
 
 vagrant]# python ./python/sto.py 
Traceback (most recent call last):
  File "./python/sto.py", line 1, in <module>
    with open('test.txt', 'r') as f:
IOError: [Errno 2] No such file or directory: 'test.txt'

解決方法：用os把當前目錄加入系統路徑中：

(tensorflow) [[email protected] python]# vim sto.py 
import os
MYDIR = os.path.dirname(__file__)
with
 
 open(os.path.join(MYDIR, 'test.txt')) as f:
    for line in f:
        print(line)

再次執行：

(tensorflow) [root@localhost vagrant]# python ./python/sto.py 
a

b

c