list_class_funcnames

    Args:
        fname (str): filepath
        blank_pats (list): defaults to '    #'

    Returns:
        list: funcname_list

    Example:
        >>> # DISABLE_DOCTEST
        >>> from utool.util_inspect import *  # NOQA
        >>> fname = 'util_class.py'
        >>> blank_pats = ['    #']
        >>> funcname_list = list_class_funcnames(fname, blank_pats)
        >>> print(funcname_list)

def list_class_funcnames(fname, blank_pats=['    #']):
    """
    list_class_funcnames

    Args:
        fname (str): filepath
        blank_pats (list): defaults to '    #'

    Returns:
        list: funcname_list

    Example:
        >>> # DISABLE_DOCTEST
        >>> from utool.util_inspect import *  # NOQA
        >>> fname = 'util_class.py'
        >>> blank_pats = ['    #']
        >>> funcname_list = list_class_funcnames(fname, blank_pats)
        >>> print(funcname_list)
    """
    with open(fname, 'r') as file_:
        lines = file_.readlines()
    funcname_list = []

    #full_line_ = ''
    for lx, line in enumerate(lines):
        #full_line_ += line
        if any([line.startswith(pat) for pat in blank_pats]):
            funcname_list.append('')
        if line.startswith('    def '):
            def_x    = line.find('def')
            rparen_x = line.find('(')
            funcname = line[(def_x + 3):rparen_x]
            #print(funcname)
            funcname_list.append(funcname)
    return funcname_list