Library is not working as expected

[guillerial]

Hello, I'm trying to test this library to a simple sinusoidal signal with some anomalies, but it's not working as I expected.

This is the sinusoidal:

And this is the script:

import matplotlib.pyplot as plt
import numpy as np
from pyculiarity import detect_ts
import pandas as pd
import random
from datetime import datetime, timedelta

def datetime_range(start, end, delta):
    current = start
    while current < end:
        yield current
        current += delta

# Creating the base signal
Fs = 8000
f = 5
sample = 8000
now = datetime.now()
dts = [now + timedelta(hours=index) for index in range(sample)]
x = np.arange(sample)
y = np.sin(2 * np.pi * f * x / Fs)

# Now lets add some anomalies
for x in range(7200, 7270):
    y[x] = random.random()

# We call the library for detecting the anoms
data = pd.DataFrame({'dates':dts, 'values':y})
results = detect_ts(data,
                    max_anoms=0.1,
                    alpha=0.1,
                    direction='both')
print(results)

plt.plot(dts, y)
plt.xlabel('date')
plt.ylabel('voltage(V)')
plt.show()

Do you know why it's not working, @nicolasmiller ?