A problem with opening a file

[dn]

On 29/11/2020 20:56, Gabor Urban wrote:
> Hi,
> 
> I am facing an issue I was not able to solve yet. I have a class saving
> messages to a file. The relevant code is:
> 
> ----
> 
> import OS

if you're wanting the Python Standard Library, this should not be in 
upper-case


> import sys

are these two imports used elsewhere?


> class MxClass:
> 
>      def __init__(self, fName, fMode,....):
>          self.fileName = fName
>          self.fileMode = fMode
>          ....

names such as fName and writeMethod are valid Python, but won't pass 
PEP-8 conventions


>      def writeMethod(self, message):
>          data = open(self.fileName, self.fileMode)
>          ....
> 
> ----
> 
> Tests reveal: the class is instantiated correctly, other methods work
> perfect. The writeMethod raises a NameError opening the file
> "name 'open' is not defined"
> 
> I am stuck here.....

Please review ALL of the code. Is an open() function defined somewhere? 
(which will "shadow" the built-in function)

That said the description doesn't quite match.

Please copy-paste the exact error messages because there's likely 
missing information...
-- 
Regards =dn