Python scripts

#Simple scripts for simple developers

[yeisoneng-blog]

#!/usr/bin/env python import numpy as np from matplotlib import pyplot import os PATH = os.path.expanduser("~/gif_temp") os.makedirs(PATH, exist_ok=True) x = np.linspace(-2*np.pi, 2*np.pi, 1e3) pyplot.xlabel("time($t$)") pyplot.ylabel("amplitude") for i in np.linspace(1e-2, 3, 100): pyplot.cla() y = np.sinc(x*i) pyplot.plot(x, y) pyplot.grid(True) pyplot.xlim(-2*np.pi, 2*np.pi) pyplot.ylim(-0.4, 1) pyplot.legend(["$sinc(x*{:0.2f})$".format(i)]) pyplot.savefig(os.path.join(PATH, "{:.2f}.png".format(i))) os.system("convert {0}/*.png {0}/gif.gif".format(PATH))

[yeisoneng-blog]

Simple plot

In [1]: x = linspace(-2*pi, 2*pi, 1000) In [2]: y = sinc(x) In [3]: plot(x,y) Out[3]: [] In [4]: grid(True) In [5]: legend(["$sinc(x)$"]) Out[5]: In [6]: xlabel("time($t$)") Out[6]: In [7]: ylabel("amplitude") Out[7]:

[yeisoneng-blog]

Download YouTube video

#!/usr/bin/env python #https://pypi.python.org/pypi/pafy from pafy import pafy url = "https://www.youtube.com/watch?v=GvD3CHA48pA" video = pafy.new(url) best_video = video.getbest() #download in home with original name best_video.download(best_video.filename)