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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def parse_docstring(docstring):
    '''
    Parse a docstring into its parts.

    Currently only parses dependencies, can be extended to parse whatever is
    needed.

    Parses into a dictionary:
        {
            'full': full docstring,
            'deps': list of dependencies (empty list if none)
        }
    '''
    # First try with regex search for :depends:
    ret = {'full': docstring}
    regex = r'([ \t]*):depends:[ \t]+- (\w+)[^\n]*\n(\1[ \t]+- (\w+)[^\n]*\n)*'
    match = re.search(regex, docstring, re.M)
    if match:
        deps = []
        regex = r'- (\w+)'
        for line in match.group(0).strip().splitlines():
            deps.append(re.search(regex, line).group(1))
        ret['deps'] = deps
        return ret
    # Try searching for a one-liner instead
    else:
        txt = 'Required python modules: '
        data = docstring.splitlines()
        dep_list = list(x for x in data if x.strip().startswith(txt))
        if not dep_list:
            ret['deps'] = []
            return ret
        deps = dep_list[0].replace(txt, '').strip().split(', ')
        ret['deps'] = deps
        return ret