I'm looking at how to do file input and output in Python. I've written the following code to read a list of names (one per line) from a file into another file while checking a name against the name...

Oct 22, 2013 · I am very new to programming and the python language. I know how to open a file in python, but the question is how can I open the file as a parameter of a function? example: …

Most likely, the problem is that you're using a relative file path to open the file, but the current working directory isn't set to what you think it is. It's a common misconception that relative …

Oct 3, 2025 · In Python's built-in open function, what is the difference between the modes w, a, w+, a+, and r+? The documentation implies that these all allow writing to the file, and says that …

Closed 2 years ago. I used to open files that were in the same directory as the currently running Python script by simply using a command like:

Jan 16, 2011 · On some operating systems, opening the file with 'a' guarantees that all your following writes will be appended atomically to the end of the file (even as the file grows by …

Jun 3, 2010 · The file pointer is at the end of the file if the file exists. The file opens in the append mode. If the file does not exist, it creates a new file for reading and writing. - Python file modes …

The following is an example of how you might write and read a pickle file. Note that if you keep appending pickle data to the file, you will need to continue reading from the file until you find …

When you say "replace the old content that's in the file with the new content", you need to read in and transform the current contents data = file.read(). You don't mean "blindly overwrite it …

Jul 19, 2012 · In this case, it feels especially bad because iterators relate in a quasi-functional, value-based way to the contents of a file, but managing file handles is a completely separate …