Directory stacks in Python

stack.py

# directory stack
_directory_stack = []


def pushd(target: str):
    """
    Push a new directory to the top of the stack and changes to it.
    
    Arguments:
        target {str} -- Where you want to go
    """
    _directory_stack.append(path.join(path.abspath("."), target))
    chdir(target)


def popd():
    """
    Pops the most recent directory off the stop of the stack and returns you to the previous directory
    """
    if len(_directory_stack) > 1:
        _directory_stack.pop(-1)
        chdir(_directory_stack[-1])
    if len(_directory_stack) == 1:
        chdir(_directory_stack[0])