def __init__(self, env=None, log=None, prog=None, no_global_options=False):
        try:
            import argparse
        except __HOLE__:
            raise RuntimeError(
                'The webassets command line now requires the '
                '"argparse" library on Python versions <= 2.6.')
        else:
            self.argparse = argparse
        self.env = env
        self.log = log
        self._construct_parser(prog, no_global_options)
dataset/ETHPy150Open miracle2k/webassets/src/webassets/script.py/GenericArgparseImplementation.__init__