How is the name of the current working directory obtained? os.getcwd() os.cwd() os.dir() os.cd()

The name of the current working directory can be obtained using the `os.getcwd()` method. The other options you mentioned, `os.cwd()`, `os.dir()`, and `os.cd()`, are not valid methods in the `os` module.

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os.path.abspath(os.getcwd())

This function returns the absolute path of the current working directory.

For example, if the current working directory is "/home/user/folder", then os.path.abspath(os.getcwd()) will return "/home/user/folder".

The os.path.abspath() function takes a path as an argument and returns the absolute path of that path. In this case, the path that is passed as an argument is the current working directory, which is obtained using the os.getcwd() function.

file_path=os.getcwd()+r'\current.txt'

This code is trying to concatenate the current working directory (obtained using the `os` module's `getcwd()` function) with a relative path to a file called `current.txt`. However, the concatenation is incorrect as there is no string concatenation operator between the two strings. It should be:

file_path = os.path.join(os.getcwd(), 'current.txt')

This uses the `os.path.join()` function to join the current working directory and the relative path with the correct path separator for the current operating system.