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import pylab as lib
x_values = lib.arange(0.0, lib.math.pi * 4, 0.01)
y_values = lib.sin(x_values)
lib.plot(x_values, y_values, linewidth=1.0)
lib.xlabel('x')
lib.ylabel('sin(x)')
lib.title('Simple plot')
# If show grid lines in chart
lib.grid(True)
# lib.savefig("sin.png")
lib.show()
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