Python Lists. Python has a great built-in list type named list. List literals are written within square brackets [ ]. Lists work similarly to strings -- use the len() function and square brackets [ ] to access data, with the first element at index 0.ython Lists. Python has a great built-in list type named list. List literals are written within square brackets [ ]. Lists work similarly to strings -- use the len() function and square brackets [ ] to access data, with the first element at index 0.
Normally, swallowing causes a little click or popping sound in the ear. This occurs because a small bubble of air has entered the middle ear, up from the back of the nose. It passes through the Eustachian tube, a membrane-lined tube about the size of a pencil lead that connects the back of the nose with the middle ear.
This is why your ears pop. Sometimes people suffering from ETD get crackling noises in their ears or deafness. The deafness is usually temporary and is as a result of the normal flexible ear drum, or tympanic membrane, becoming stiff as a result of the increased pressure behind it. The ear drum is therefore unable to move when a sound wave hits it and so the sound is muffled when it is heard. The crackling is due to the mucus moving within the middle ear. It is the blockage of the Eustachian tube that causes pain in the ears when flying as the changes in air pressure make it difficult for the pressure across the ear drum to equalise. This causes the ear drum to be stretched, which is painful.