该迭代仅运行一次,下面是我尝试运行的代码,
def heat_coeff(gas,Nu,d):
"""Calculate heat transfer (at interior tube wall)"""
mass = gas *100
diff = mass * 2
for i in d:
U = 4.*diff*Nu / (i*i)
return U
heat_coeff(10,4, [1,2,3])
答案 0 :(得分:1)
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内部循环,并将其放在外部。否则,您可能会过早退出!
return
但是,还有另一个错误。您打算对循环内的for i in d:
U = 4 * diff * Nu / (i*i)
return U
做什么?您必须在每次迭代时更新,否则,您只会得到上一次迭代的值。
编辑:
现在,您已经在注释中解释了您的需求(首先应该是在问题中),这就是您打算做的事情:
U
例如:
def heat_coeff(gas, Nu, d):
mass = gas * 100
diff = mass * 2
return [4.0 * diff * Nu / (i*i) for i in d]