PyPlot_animation.jl

using PyPlot
using PyCall
@pyimport matplotlib.animation as anim

dx  = 0.05
xlm = [0, 2π]
x   = collect(xlm[1]:dx:xlm[2])
n   = length(x)

y  = sin.(x)

fig  = figure(figsize=(4, 4))
line = plot([],[])[1]
xlim(xlm)
ylim([-1,1])

function update(i)
    line[:set_data](x[1:i],y[1:i])
end

myanim = anim.FuncAnimation(fig, update, frames=n, interval=30)

@time myanim[:save]("anim.mp4", writer="ffmpeg")
# @time myanim[:save]("anim.gif", writer="imagemagick")