def tanhPrime(x):
    tmp = tanh(x)
    return 1 - tmp * tmp
Determine whether a given line is a legal header.
dataset/ETHPy150Open pybrain/pybrain/pybrain/tools/functions.py/tanhPrime--crossover with--dataset/ETHPy150Open ofermend/medicare-demo/socialite/jython/Lib/rfc822.py/Message.isheader