小编Lua*_*ham的帖子

如何使用此命令检查文件“file_name”是否仍然打开？

csv_gen = (row for row in open(file_name))

我知道我们应该使用类似的东西

with open(file_name) as file_name_ref:
    csv_gen = (row for row in file_name_ref)

但是发生了什么，如果我使用以前的命令，我该如何检查行为。

Searching Python 3.6 libraries...                                  
Found Python library: /home/luan/anaconda3/envs/za/lib/libpython3.6m.so
Found Python headers folder: /home/luan/anaconda3/envs/za/include/python3.6m
-- The C compiler identification is GNU 7.5.0             
-- The CXX compiler identification is GNU 7.5.0
-- Check for working C compiler: /usr/bin/cc              
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info      
-- Detecting C compiler ABI info - done                               
-- Detecting C compile features            
-- Detecting C compile features - done                    
-- Check for working CXX compiler: /usr/bin/c++     
-- Check …