list-comprehension and map question (simple)

[Charles Hartman]

I understand this toy example:

lines = "this is a group\nof lines of\nwords"
def getlength(w): return len(w)
s = map(getlength, [word for ln in lines.split() for word in  
ln.splitlines()])

(now s is [4, 2, 1, 5, 2, 5, 2, 5])

My question is whether there's any compact way to combine function  
calls, like this (which doesn't work):

lines = "this is a group\nof lines of\nwords"
def getlength(w): return len(w)
def timestwo(x): return x * 2
s = map(timestwo(getlength), [word for ln in lines.split() for word in  
ln.splitlines()])

(Under the WingIDE I get this traceback:
"/Applications/WingIDE-Professional-2.0.2/WingIDE.app/Contents/MacOS/ 
src/debug/server/_sandbox.py", line 1, in ?
     # Used internally for debug sandbox under external interpreter
   File  
"/Applications/WingIDE-Professional-2.0.2/WingIDE.app/Contents/MacOS/ 
src/debug/server/_sandbox.py", line 1, in addone
     # Used internally for debug sandbox under external interpreter
TypeError: unsupported operand type(s) for +: 'function' and 'int'
)

I hope the question is clear enough. I have a feeling I'm ignoring a  
simple technique . . .

Charles Hartman