我有一段用Ruby编写的代码。我想将其转换为Python。
def decode(bitstring, search_space, bits_per_param)
vector = []
search_space.each_with_index do |bounds, i|
off, sum = i*bits_per_param, 0.0
param = bitstring[off...(off+bits_per_param)].reverse
param.size.times do |j|
sum += ((param[j].chr=='1') ? 1.0 : 0.0) * (2.0 ** j.to_f)
end
min, max = bounds
vector << min + ((max-min)/((2.0**bits_per_param.to_f)-1.0)) * sum
end
return vector
end
我将其转换如下。我需要转换param
的帮助。
def decode(bitstring, search_space, bits_per_param):
vector = []
for i, bounds in enumerate(search_space):
sum = i * bits_per_param
for j in xrange(0, len(param)):
sum += iif(param[j] == '1', '0', '1') * (2 ** j), param[j]
min, max = bounds
vector = min + ((max - min) / ((2.0 ** bits_per_param) - 1.0)) * sum
return vector
param
未正确转换。
ps。这是 iif 函数的代码:
def iif(condition, true_part, false_part):
return (condition and [true_part] or [false_part])[0]
答案 0 :(得分:0)
我想我可以部分解决我的问题。 python中的代码如下所示。
def decode(bitstring, search_space, bits_per_param):
vector = []
for i, bounds in enumerate(search_space):
off, sum = i * bits_per_param, 0.0
param = (bitstring[off:(off+bits_per_param)])[::-1]
for j in xrange(0, len(param)):
if param[j].__str__() == '1':
sum += 1.0 * (2**float(j))
else:
sum += 0.0 * (2**float(j))
min, max = bounds
vector.append(min + ((max - min) / ((2.0 ** bits_per_param) - 1.0)) * sum)
return vector