class ConstantValue(object):
    # 1. Option Type
    AMERICAN = 'American'
    EUROPEAN = 'European'
    
    # 2. CallOrPut Type
    CALL = 'call'
    PUT = 'put'
        
    # 3. Trade Type
    BUY = 'buy'
    SELL = 'sell'
    
    LONG = 'buy'
    SHORT = 'sell'

    # 4. OptionStrategy Type
    LONG_CALL = 1
    SHORT_CALL = 2
    
    LONG_PUT = 3
    SHORT_PUT = 4
    
    BULL_CALL_SPREAD = 5
    BEAR_PUT_SPREAD = 6
    
    LONG_STRADDLE = 7
    SHORT_STRADDLE = 8
    
    LONG_STRANGLE = 9
    SHORT_STRANGLE = 10
    
    LONG_BUTTERFLY = 11
    SHORT_BUTTERFLY = 12
    
    LONG_CONDOR = 13
    SHORT_CONDOR = 14