plt.axvline(x=0.22058956)
xposition = [0.3, 0.4, 0.45]
for xc in xposition:
plt.axvline(x=xc, color='k', linestyle='--')
axvline(x=5, linewidth=4, color='r')
# x=0 when not specified
pythonCopymatplotlib.pyplot.axvline(x=0, ymin=0, ymax=1, hold=None, **kwargs)