afrobeard a écrit : (top-post corrected. Please, do not top-post).
On May 14, 3:08 am, [EMAIL PROTECTED] wrote:Hello! I have trouble understanding something in this code snippet: class TextReader: """Print and number lines in a text file.""" def __init__(self, file): self.file = file . . . When would you do a thing like self.file = file ? I really don't find an answer on this. Please help me understand this.If you are familiar to C++ or a similar language, the concept of the this pointer might not be alien to you. self in this context is basically a reference to the class itself.
Nope. It's a reference to the instance.
Hence self.file is creating a class member
Nope. It's setting an instance attribute.
and setting to the input from file. As Gary pointed out, during initialization, only the latter parameter i.e. file is being passed to __init__
Nope. Obviously, both parameters are passed - else it just wouldn't work. Given an object 'obj' instance of class 'Cls', you can think of obj.method(arg) as a convenient shortcut for Cls.method(obj, arg).
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