def dpkg_source(b_or_x,arg1,cwd=None):
    "call dpkg-source -b|x arg1 [arg2]"
    assert ['-b','-x'] in b_or_x
    args = ['/usr/bin/dpkg-source',b_or_x,arg1]
    process_command(args, cwd=cwd)
dataset/ETHPy150Open astraw/stdeb/stdeb/util.py/dpkg_source/swapped operands of `in`