график для мяча без отскока

from matplotlib import pyplot as plt
import sys
def read(path):
    x, y = [], []
    for line in open(path):
        line_val = line.split()
        x.append(float(line_val[0]))
        y.append(float(line_val[1]))
    return x, y

def main():
    x, y = read(sys.argv[1])
    plt.plot(x, y)
    plt.show()

if __name__ == "__main__":
    main()