Chapter 10: Problem 18

What would it mean if the expression eof(myFile) were to return True?

Short Answer

Expert verified

Answer: The expression `eof(myFile)` returning `True` signifies that the file object `myFile` has reached its end and there is no more data left to read from it.

Step by step solution

Understanding "end of file"

The term "end of file" refers to the point in a file where there is no more data to read. In other words, it is the point when you have reached the end of the file while reading its content. When you are working with file objects, you need to be aware of the file position, which is an index representing the current position of the read/write pointer within the file. When the read/write pointer is at the end of the file, there is no more data to read from or write onto the file.

Explaining the eof() function

The `eof` function is a function that takes a file object as an input and checks if the file has reached the end of file. If the file has reached its end, the function returns `True`, and if not, it returns `False`. This function can be useful while reading data from a file in a loop, as checking for the end of file can help to avoid attempting to read non-existent data.

Interpreting the given expression

The given expression is `eof(myFile)`, where `myFile` is a file object. The `eof` function checks if `myFile` has reached the end of the file. If the expression returns `True`, this signifies that `myFile` has reached its end and there is no more data to read from it.

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What would it mean if the expression eof(myFile) were to return True?

Short Answer

Step by step solution

Understanding "end of file"

Explaining the eof() function

Interpreting the given expression

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