我有以下 R 代码，想知道 Python 中的等效代码是什么
power.t.test(n=20,delta=40,sd=50,sig.level=0.05,type= "one.sample",alternative="one.sided")
预期输出是：
One-sample t test power calculation
n = 20
delta = 40
sd = 50
sig.level = 0.05
power = 0.9641728
alternative = one.sided