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dmcc

changes from tonight's rehearsal:
changes from tonight's rehearsal:
- CueFader is closer to actually running the show, computes DMX levels
to send.
- KeyboardComposer is not a dummy. Use DMXDUMMY=1 to disable it.
- Submaster: subs can now be "temporary" -- i.e. they shouldn't be saved
or loaded. to save a temporary sub, make a copy of it with a proper name
since the computed name will be ugly.
Also, get_normalized_copy() and crossfade() methods added.
linear_fade helper (shouldn't be in Submaster, probably) added too.
- dmxchanedit: longer labels
- cuelist1 now has some bogus data in it and some crap removed
- dmxclient: now listens to the $DMXHOST and $DMXDUMMY env variables.
- patchdata: now up to date with this year's show
- danshow subs song{01..19}: removed. maybe we'll re-add them in an
archive directory.

def maxes(dicts):
    '''
    ({'a' : 5, 'b' : 9}, {'a' : 10, 'b' : 943})
    '''
    newdict = {}
    for d in dicts:
        for k,v in d.items():
            newdict[k] = max(v, newdict.get(k, 0))
    return newdict

def scaledict(d,scl):
    # scales all values in dict and returns a new dict
    return dict([(k,v*scl) for k,v in d.items()])
    
# class Setting that scales, maxes        

def subsetdict(d, dkeys, default=0):
    """Subset of dictionary d: only the keys in dkeys.  If you plan on omitting
    keys, make sure you like the default."""
    newd = {} # dirty variables!
    for k in dkeys:
        newd[k] = d.get(k, default)
    return newd