Multiple lines of x tick labels in matplotlib

Question

I\'m trying to make a plot similar to this excel example:

I would like to know if there i

Answer 1

I am also unable to comment due to reputation but have a minor fix for behzad's answer.

The tick_params() 'bottom' and 'top' keywords take booleans, not strings (at least for py3.6). For example, using bottom = 'off' for me still produces ticks whereas using bottom = False removes ticks.

so replace

ax.tick_params( axis='x', which='major', bottom='off', top='off' )

with

ax.tick_params( axis='x', which='major', bottom=False, top=False )

and it works!