A problem with opening a file

[Dieter Maurer]

Gabor Urban wrote at 2020-11-29 08:56 +0100:
>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
>import sys
>
>class MxClass:
>
>    def __init__(self, fName, fMode,....):
>        self.fileName = fName
>        self.fileMode = fMode
>        ....
>
>    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 "

"open" is a so called "built-in" function.
In "normal" (i.e. not restricted) mode, it should be available.
Are you sure, you operate in "normal" mode?

Under Python 3, you could try to import "open" from the module "io".
(Under Python 2, "file" is a synonym for "open").