if 语句覆盖值

Question

我正在尝试从论文中实现这个公式(ref)：

我试过了：

import statsmodels.api

n = 1 # samples
x = 1 # positive results

# Range of significance
Min=0
Max=1
Step=.01
Alpha = np.arange(Min,Max+Step,Step)

Low  = []
High = []

for  A in Alpha:
  low, high = statsmodels.stats.proportion.proportion_confint(x, n, alpha=A, method='jeffreys')
  if x == 0: low  == 0 # these lines
  if x == n: high == 1 # aren't working
  Low.append(low)
  High.append(high)

但这给了我这个：

我的 if 语句应该覆盖 low 和 high 当 x=0 或 x=n。请问我怎样才能让他们工作？

参考：Brown, L.D.、Cai, T.T. 和 DasGupta, A., 2001。二项式比例的区间估计。统计科学，第 101-117 页。

Answer 1

感谢@jfaccioni 的回答；我只想要一个=这样的

import statsmodels.api

n = 1 # samples
x = 1 # positive results

# Range of significance
Min=0
Max=1
Step=.01
Alpha = np.arange(Min,Max+Step,Step)

Low  = []
High = []

for  A in Alpha:
  low, high = statsmodels.stats.proportion.proportion_confint(x, n, alpha=A, method='jeffreys')
  if x == 0: low  = 0
  if x == n: high = 1
  Low.append(low)
  High.append(high)