[Python] Use Numpy and Matplotlib to save data to a file and load these data to plot them

numpy_array_to_from_file.py

import os.path

import matplotlib.pyplot as plt
import numpy as np

FILENAME = 'data.txt'
SEPARATOR = '\n'

# Data can be generated with any tool as long as the format is good
# Create one to show the format of the file
if not os.path.isfile(FILENAME):
    generated = np.random.random_sample(100)
    generated.tofile(FILENAME, sep=SEPARATOR)

# Load the file as a numpy array
loaded = np.fromfile(FILENAME, sep=SEPARATOR)

# Plot this array
plt.plot(loaded)
print(loaded)
plt.show()