# Load Graphene Dependencies from python-graphenelibs
try:
    from graphenebase.account import PrivateKey, PublicKey, Address, BrainKey
    import graphenebase.base58
    import graphenebase.transactions
    import graphenebase.dictionary
except:
    raise ImportError("Please install 'graphenelibs'")


__all__ = ['transactions',
           'chains',
           'objecttypes',
           'operations']

# Load Graphene Dependencies from python-graphenelibs
try:
    from graphenebase.account import PrivateKey, PublicKey, Address, BrainKey
    import graphenebase.base58
    import graphenebase.transactions
    import graphenebase.dictionary
except:
    raise ImportError("Please install 'graphenelibs'")


__all__ = ['transactions',
           'chains',
           'objecttypes',
           'operations',
           'memo']

add memo to __init__.py