浮動小数点数のリストの表示出力 ref: http://qiita.com/kkdd/items/4f3c112ccb043d4bc501

file0.txt

print(prettyfloat([1./3, 2./3], ndec=3)) # print pretty float numbers
# ==> [0.333, 0.667]

file1.txt

# ndec: a number of decimal places

def prettyfloat(x, ndec=2):
    def pfform(x):
        return ("%0." + str(ndec) + "f") % x
    pfclas = type('', (float,), {'__repr__': pfform, '__str__': pfform})
    def pf(x):
        if isinstance(x, float):
            return pfclas(x)
        else:
            return x
    return map_recur(pf, x)